# AIGClub Full AI-readable Index

## Site

- Name: AIGClub
- Canonical domain: https://www.aigclub.com
- Active languages: zh (Simplified Chinese), en (English)
- Purpose: Provide clear browser-based tools, trustworthy explanations, and basic trust pages for everyday calculations, conversion, text processing, developer utilities, date planning, commerce estimation, SEO/marketing cleanup, and security/privacy helper tasks.
- Sitemap: https://www.aigclub.com/sitemap-index.xml
- Base64 is encoding, not encryption.

## Simplified Chinese (zh)

- Home: https://www.aigclub.com/zh/
- Tools index: https://www.aigclub.com/zh/tools/
- Articles index: https://www.aigclub.com/zh/articles/
- AI-readable page index: https://www.aigclub.com/zh/ai-index/

### Categories

#### 电商工具

- URL: https://www.aigclub.com/zh/categories/commerce-tools/
- Direct answer: AIGClub 的电商工具分类目前收录利润率、目标利润率售价、加价率、盈亏平衡、体积重、单价、多重折扣、通用平台费用、总成本和 SKU 生成工具，适合做商品定价、运营表格、包裹尺寸、促销折扣、费用口径和商品编码草稿的通用估算。结果不接平台实时费率，不自动包含税费、物流、广告费、汇率或最终结算规则，除非用户手动计入输入。
- Published tools: 盈亏平衡计算器, 体积重计算器, 通用平台费用估算器, SKU 生成器

#### 开发者工具

- URL: https://www.aigclub.com/zh/categories/developer-tools/
- Direct answer: 先判断要检查的对象：标准 JSON 用 JSON 工具，完整链接用 URL 解析器，? 后参数用 Query String 解析器，JavaScript RegExp 样本用正则测试器，五字段 Unix 计划用 Cron 解析器。每个页面都说明解析器或运行时边界；结果不证明业务有效、链接安全、跨引擎正则一致或调度器兼容。
- Published tools: URL 解析器, Query String 解析器, HTTP 状态码查询工具, Cron 表达式解析器, 正则表达式测试器, HTML 压缩工具, CSS 压缩工具, JavaScript 美化工具, JSONPath 测试工具, JSON 压缩工具, XML 格式化工具, YAML 格式化工具, TOML 格式化工具, CSV 转 JSON 工具, JSON 转 CSV 工具, Unix 时间戳转换器

#### 浏览器本地图片工作流工具

- URL: https://www.aigclub.com/zh/categories/image-tools/
- Direct answer: 先用图片裁剪工具确定构图，再用尺寸调整工具设置交付像素，最后按接收端选择格式转换。制作固定 1200 × 630 横幅时，应先裁成 40:21，再调整到 1200 × 630，最后只做必要的编码。每个下载结果都要复核；这些浏览器处理器不保证元数据、动画、色彩配置、兼容性或文件大小结果。
- Published tools: 图片裁剪工具, 图片尺寸调整工具, 图片格式转换工具

#### 安全与隐私

- URL: https://www.aigclub.com/zh/categories/security-privacy/
- Direct answer: AIGClub 的安全与隐私分类目前展示七个具有导航资格的工具：密码短语生成、密码强度检查、HMAC、校验和、Cookie 解析、敏感信息脱敏和 JSON 脱敏。它们按当前实现只在浏览器本地完成生成、计算、检查、解析或脱敏；本地处理可以减少上传风险，但不替代密码管理器、密钥管理、DLP、合规判断、Cookie 同意管理或安全审计。
- Published tools: 密码短语生成器, 敏感信息脱敏工具, JSON 脱敏工具, HMAC 生成器, Cookie 解析器, 校验和计算器, 密码强度检查器

#### SEO 与营销工具

- URL: https://www.aigclub.com/zh/categories/seo-marketing-tools/
- Direct answer: 先按证据类型选工具：活动参数用 UTM 生成器，标题描述草稿用 Meta 预览，粘贴的抓取规则用 robots.txt 检查，XML 中的 loc 清单用 sitemap 提取，关键词草稿用列表清理。这些工具不连接搜索引擎 API，也不承诺 SEO 排名、抓取、收录或营销效果。
- Published tools: robots.txt 检查工具

### Trust Pages

#### 关于 AIGClub

- URL: https://www.aigclub.com/zh/about/
- Summary: AIGClub Team 是维护本站工具与说明内容的组织署名，不代表某位具名个人或专业资历。站点用自动测试和公开边界降低错误风险，但不会把自动检查或 AI 辅助表述成已经完成的逐页人工复核。

#### 联系 AIGClub

- URL: https://www.aigclub.com/zh/contact/
- Summary: 可以通过 contact@aigclub.com 联系站点运营者。请不要在邮件中发送密码、Token、密钥、身份证件、银行卡等敏感信息。

#### Cookie 政策

- URL: https://www.aigclub.com/zh/cookie-policy/
- Summary: AIGClub 当前使用 Cloudflare、Google Analytics 4、Microsoft Clarity 和 51.la，部分内容页还会加载 Google AdSense 页面脚本。这些服务可能使用 cookies、像素或 web beacons、脚本、本地存储、IP 地址以及设备或浏览器标识符，用于分发、安全、分析、可用性、广告、效果衡量、频次控制和防滥用。

#### 隐私政策

- URL: https://www.aigclub.com/zh/privacy-policy/
- Summary: AIGClub 是静态优先网站，多数工具设计为在浏览器中处理输入。公开页面当前使用 Cloudflare、Google Analytics 4、Microsoft Clarity 和 51.la，部分广告候选内容页还会加载 Google AdSense 页面脚本。这些服务可能处理 cookies 或类似标识符、IP 地址、设备和浏览器信息、页面访问及交互事件；请不要在在线工具中输入秘密或敏感个人信息。

#### 使用条款

- URL: https://www.aigclub.com/zh/terms/
- Summary: AIGClub 的工具结果和说明内容仅供一般参考。重要结果应自行核对，不要输入密码、Token、密钥、身份证件、银行卡等敏感信息。

### Tools

#### 年龄计算器

- URL: https://www.aigclub.com/zh/tools/age-calculator/
- Category: date-time-tools
- Direct answer: 年龄计算器会以浏览器当前日期为参考，计算从出生日期到今天已经满多少年、多少个月、多少天，并同时显示累计自然日。它不用于证件、考试、保险、合同或法律年龄判断。
- Related tools: date-difference-calculator, date-add-subtract-calculator, week-number-calculator
- Related articles: none

#### 角度转换器

- URL: https://www.aigclub.com/zh/tools/angle-converter/
- Category: converters
- Direct answer: 角度转换器会在浏览器本地以弧度为基准，在度、弧度、百分度、圈、角分和角秒之间换算。它允许负角度，负数只表示有符号角度或相反方向，不做导航、测绘、机械装配、安全校准、天文观测或坐标系统判断。
- Related tools: frequency-converter, time-unit-converter, length-converter
- Related articles: none

#### 面积单位转换器

- URL: https://www.aigclub.com/zh/tools/area-converter/
- Category: converters
- Direct answer: 面积单位转换器会在浏览器本地以平方米为基准，在常见公制、英制和亩、公顷等面积单位之间换算。面积换算使用平方比例，不能把长度倍数直接当作面积倍数；涉及土地登记、产权边界、测绘或正式报告时应以专业资料复核。
- Related tools: length-converter, weight-converter, temperature-converter
- Related articles: none

#### 宽高比计算器

- URL: https://www.aigclub.com/zh/tools/aspect-ratio-calculator/
- Category: calculators
- Direct answer: 宽高比计算器会在浏览器本地根据宽度和高度输出化简比例，也可以按目标宽求高或按目标高求宽。它不处理图片文件，不承诺平台上传适配，也不提供设计验收、工程、法律或专业判断。
- Related tools: scale-calculator, ratio-calculator, rounding-calculator
- Related articles: none

#### 平均数计算器

- URL: https://www.aigclub.com/zh/tools/average-calculator/
- Category: calculators
- Direct answer: 平均数计算器会在浏览器本地读取你输入的一组数字，输出计数、总和和平均值。它只做通用数学整理，不做统计显著性、投资、贷款、税务、医疗、法律、财务、会计或专业数据分析。
- Related tools: ratio-calculator, unit-rate-calculator
- Related articles: none

#### 批量时间戳转换器

- URL: https://www.aigclub.com/zh/tools/batch-timestamp-converter/
- Category: date-time-tools
- Direct answer: 批量转换 Unix 时间戳时，每行输入一个整数，选择自动识别或强制秒/毫秒，再选择输出格式。自动识别按数字位数判断：去掉负号后 10 位及以下按秒，11 位及以上按毫秒；结果会保留检测单位用于审查。
- Related tools: unix-timestamp-converter, time-zone-converter, date-format-converter, time-diff-calculator
- Related articles: none

#### 盈亏平衡计算器

- URL: https://www.aigclub.com/zh/tools/break-even-calculator/
- Category: commerce-tools
- Direct answer: 盈亏平衡计算器会在浏览器本地用固定成本除以单件贡献毛利，估算需要卖出多少件才能覆盖固定成本。结果只适合一般经营草稿和学习参考，不自动包含税费、平台费用、物流、广告费、汇率或最终结算规则，除非你手动把它们计入输入。
- Related tools: none
- Related articles: none

#### 工作日计算器

- URL: https://www.aigclub.com/zh/tools/business-days-calculator/
- Category: date-time-tools
- Direct answer: 工作日计算器会在开始日期和结束日期之间按包含两端日期的区间统计周一到周五数量，并列出周末日和自然日数量。它默认不包含法定节假日和调休安排，结果适合通用排期参考。
- Related tools: date-difference-calculator, date-add-subtract-calculator, unix-timestamp-converter
- Related articles: none

#### 大小写转换工具

- URL: https://www.aigclub.com/zh/tools/case-converter/
- Category: text-tools
- Direct answer: 本工具在浏览器本地把文本转换为大写、小写、Title Case、Sentence case、camelCase、PascalCase、kebab-case 或 snake_case。中文字符不会因为英文大小写规则被改写；命名格式会按常见字母、数字和文字片段拆分，结果适合整理文案和开发测试文本。
- Related tools: whitespace-cleaner, find-replace-tool, line-number-adder
- Related articles: none

#### 字符频率统计工具

- URL: https://www.aigclub.com/zh/tools/character-frequency-counter/
- Category: text-tools
- Direct answer: 本工具在浏览器本地按 Unicode 字符统计频率，输出字符、次数和占比。你可以保留空格、换行和制表符，也可以忽略所有空白字符后再统计。
- Related tools: duplicate-word-remover, line-filter-tool
- Related articles: none

#### 校验和计算器

- URL: https://www.aigclub.com/zh/tools/checksum-calculator/
- Category: security-privacy
- Direct answer: 校验和计算器会在浏览器本地根据输入文本的 UTF-8 字节计算 CRC-32、Adler-32 或 8-bit byte sum，并给出十六进制结果、十进制结果和字节数。校验和主要用于发现意外错误；如果需要防篡改、身份认证或更强完整性校验，应使用哈希、HMAC 或协议要求的专门机制。
- Related tools: hmac-generator, cookie-parser
- Related articles: none

#### 逗号分隔列表转换器

- URL: https://www.aigclub.com/zh/tools/comma-separated-list-converter/
- Category: text-tools
- Direct answer: 本工具在浏览器本地把多行列表转换为分隔列表，也可以把分隔列表拆成多行。它支持逗号、中文逗号、分号和换行分隔，并提供保留原项、修剪项目、修剪并移除空项三种明确处理方式；它不是完整 CSV 解析器。
- Related tools: text-sorter, line-filter-tool
- Related articles: none

#### Cookie 解析器

- URL: https://www.aigclub.com/zh/tools/cookie-parser/
- Category: security-privacy
- Direct answer: Cookie 解析器会在浏览器本地把 `name=value; other=123` 这样的 Cookie 字符串拆成可复核的表格文本，默认尝试百分号解码值，并显示重复名称、空值和解码失败提示。它不读取浏览器 Cookie 存储，不连接外部服务，也不替代安全审计、隐私合规或 Cookie 同意管理。
- Related tools: hmac-generator, json-redactor
- Related articles: none

#### 倒计时计算器

- URL: https://www.aigclub.com/zh/tools/countdown-calculator/
- Category: date-time-tools
- Direct answer: 倒计时计算器会比较目标日期时间和参考日期时间，输出剩余或已过去的总分钟、总小时、总天数以及天、小时、分钟拆分。默认参考当前本地时间，结果只适合普通排期参考。
- Related tools: time-diff-calculator, days-until-calculator, date-add-subtract-calculator
- Related articles: none

#### Cron 表达式解析器

- URL: https://www.aigclub.com/zh/tools/cron-expression-parser/
- Category: developer-tools
- Direct answer: Cron 表达式解析器支持 5 字段 Unix Cron 和常见 @hourly、@daily、@weekly、@monthly、@yearly 宏。它会说明方言、时区选择、日期与星期的 OR 语义，并在 366 天窗口内预览有限数量的运行时间；不支持 Quartz 秒字段、年份字段或云平台专用语法。
- Related tools: unix-timestamp-converter, time-zone-converter, date-format-converter, http-status-code-reference
- Related articles: cron-five-field-vs-quartz-guide, cron-schedule-debugging-checklist

#### CSS 压缩工具

- URL: https://www.aigclub.com/zh/tools/css-minifier/
- Category: developer-tools
- Direct answer: CSS 压缩应只移除不会改变语法含义的排版空白和普通注释。本工具采用保守策略：保留字符串、url() 内容、calc() 加减号周围空白、自定义属性值和 /*! 保留注释，并检查注释、引号、括号和大括号是否闭合，避免把样式改成无效 CSS。
- Related tools: html-minifier, json-minifier, xml-formatter
- Related articles: none

#### CSV 转 JSON 工具

- URL: https://www.aigclub.com/zh/tools/csv-to-json-converter/
- Category: developer-tools
- Direct answer: CSV 转 JSON 会把每一行数据变成一个对象，并用第一行 CSV 作为字段名。本工具在浏览器本地运行，支持常见带引号的 CSV 字段，值默认保持字符串。导入前请复核表头、行数、额外列和目标 API 规则。
- Related tools: json-minifier, comma-separated-list-converter
- Related articles: csv-to-json-converter-guide

#### 数据大小转换器

- URL: https://www.aigclub.com/zh/tools/data-size-converter/
- Category: converters
- Direct answer: 数据大小转换器会在浏览器本地以 byte 为基准换算 bit、byte、KB、MB、GB、TB、KiB、MiB、GiB 和 TiB。KB/MB/GB/TB 使用 1000 进制，KiB/MiB/GiB/TiB 使用 1024 进制，1 byte 等于 8 bit；结果不等同于云存储账单、磁盘可用容量、系统显示容量、网络带宽或传输耗时。
- Related tools: length-converter, weight-converter, temperature-converter
- Related articles: none

#### 日期加减计算器

- URL: https://www.aigclub.com/zh/tools/date-add-subtract-calculator/
- Category: date-time-tools
- Direct answer: 日期加减计算器从一个开始日期出发，按加上或减去指定数量的天、周、月或年得到结果日期。月末和闰年边界会落到目标月份中的有效日期，例如 1 月 31 日加 1 个月会得到 2 月最后一天。
- Related tools: date-difference-calculator, business-days-calculator, unix-timestamp-converter
- Related articles: none

#### 日期差计算器

- URL: https://www.aigclub.com/zh/tools/date-difference-calculator/
- Category: date-time-tools
- Direct answer: 日期差计算器会按自然日比较两个日期，给出不含结束日期和包含结束日期两种天数，并把当前选择换算为周数和剩余天数。结束日期早于开始日期时结果以负数提示，便于发现日期顺序问题。
- Related tools: date-add-subtract-calculator, business-days-calculator, unix-timestamp-converter
- Related articles: none

#### 日期格式转换器

- URL: https://www.aigclub.com/zh/tools/date-format-converter/
- Category: date-time-tools
- Direct answer: 日期格式转换的关键是先确认来源格式，再输出目标格式。本工具自动识别只处理 YYYY 开头的无歧义日期；MM/DD/YYYY 和 DD/MM/YYYY 必须手动选择来源格式，避免把 01/02/2026 解释错。
- Related tools: date-add-subtract-calculator, unix-timestamp-converter, time-zone-converter, day-of-year-calculator
- Related articles: none

#### 年内第几天计算器

- URL: https://www.aigclub.com/zh/tools/day-of-year-calculator/
- Category: date-time-tools
- Direct answer: 年内第几天计算器会把输入日期与当年 1 月 1 日比较，输出从 1 开始的年内序号，并根据该年份是否闰年显示全年 365 或 366 天以及剩余天数。
- Related tools: date-difference-calculator, week-number-calculator, days-until-calculator
- Related articles: none

#### 距离某日期天数计算器

- URL: https://www.aigclub.com/zh/tools/days-until-calculator/
- Category: date-time-tools
- Direct answer: 距离某日期天数计算器会比较参考日期和目标日期，输出还有多少天或已经过去多少天，并支持选择是否包含参考日或目标日。默认不包含参考日，也不额外包含目标日。
- Related tools: date-difference-calculator, business-days-calculator, countdown-calculator
- Related articles: none

#### 密度单位转换器

- URL: https://www.aigclub.com/zh/tools/density-converter/
- Category: converters
- Direct answer: 密度单位转换器会在浏览器本地以 kg/m³ 为基准，在 kg/m³、g/cm³、g/mL、kg/L、lb/ft³ 和 lb/in³ 之间换算。它只做普通单位口径转换，不判断材料、温度压力修正、实验室测量、食品安全、化学浓度或工程适用性。
- Related tools: weight-converter, volume-converter, pressure-converter
- Related articles: none

#### 去除重复词工具

- URL: https://www.aigclub.com/zh/tools/duplicate-word-remover/
- Category: text-tools
- Direct answer: 本工具在浏览器本地按词项去重，默认把 Apple 和 apple 视为同一个词，并保留第一次出现的写法。输出会用空格连接去重后的词项，并显示移除数量。
- Related tools: character-frequency-counter
- Related articles: none

#### 能量单位转换器

- URL: https://www.aigclub.com/zh/tools/energy-converter/
- Category: converters
- Direct answer: 能量单位转换器会在浏览器本地以 J 为基准，在 J、kJ、MJ、Wh、kWh、cal、kcal 和 BTU 之间换算。它只按固定常量处理普通单位口径，不承诺电费、营养标签、热效率、燃料热值、工程设计或设备能耗结论。
- Related tools: power-converter, time-unit-converter, temperature-converter
- Related articles: none

#### 幂计算器

- URL: https://www.aigclub.com/zh/tools/exponent-calculator/
- Category: calculators
- Direct answer: 幂计算器会计算底数的指定指数次幂，例如 2^10、5^-2 或 9^0.5。负指数会按倒数理解，0 的负指数会被拒绝；负数底数只支持整数指数，因为小数指数可能进入复数范围。
- Related tools: square-root-calculator, rounding-calculator, fraction-calculator
- Related articles: none

#### 查找替换工具

- URL: https://www.aigclub.com/zh/tools/find-replace-tool/
- Category: text-tools
- Direct answer: 本工具在浏览器本地执行文字查找和替换。默认不区分英文大小写；选择区分大小写时，只有完全匹配大小写的片段会被替换。
- Related tools: line-filter-tool, duplicate-word-remover, whitespace-cleaner
- Related articles: none

#### 力单位转换器

- URL: https://www.aigclub.com/zh/tools/force-converter/
- Category: converters
- Direct answer: 力单位转换器会在浏览器本地以 N 为基准，在 N、kN、lbf、kgf 和 dyn 之间换算。kgf 按标准重力下的力单位处理；工具不判断吊装、安全载荷、结构强度、扭矩或设备合规。
- Related tools: torque-converter, pressure-converter, weight-converter
- Related articles: none

#### 分数计算器

- URL: https://www.aigclub.com/zh/tools/fraction-calculator/
- Category: calculators
- Direct answer: 分数计算器会把输入的分数做加、减、乘、除或单个分数约分，并用最大公约数化简结果。它会同时显示约分后的假分数、带分数和小数近似，便于复核。
- Related tools: ratio-calculator, proportion-calculator, rounding-calculator
- Related articles: none

#### 频率单位转换器

- URL: https://www.aigclub.com/zh/tools/frequency-converter/
- Category: converters
- Direct answer: 频率单位转换器会在浏览器本地以 Hz 为基准，在 Hz、kHz、MHz、GHz、THz、rpm 和 cycles per minute 之间换算。它只把 rpm 和每分钟循环次数按固定时间关系转换，不判断电机、机械、音频、无线电、医疗设备或安全限值。
- Related tools: time-unit-converter, angle-converter, speed-converter
- Related articles: none

#### 油耗单位转换器

- URL: https://www.aigclub.com/zh/tools/fuel-consumption-converter/
- Category: converters
- Direct answer: 油耗单位转换器会在浏览器本地以 L/100km 为等价口径，在 L/100km、km/L、mpg US 和 mpg UK 之间换算。由于 km/L 和 mpg 与 L/100km 是倒数关系，输入必须大于 0；工具不接实时油价、车型、路况、排放、税费或车辆合规数据。
- Related tools: speed-converter, energy-converter, power-converter
- Related articles: none

#### HMAC 生成器

- URL: https://www.aigclub.com/zh/tools/hmac-generator/
- Category: security-privacy
- Direct answer: HMAC 生成器会在浏览器本地用 Web Crypto HMAC 计算消息认证码，支持 SHA-256、SHA-384、SHA-512，以及 hex 和 base64 输出。请只使用测试密钥或你有权限处理的短期密钥；生产密钥、私钥、访问 Token、助记词和客户隐私数据不应粘贴到任何不受控页面。
- Related tools: none
- Related articles: none

#### HTML 压缩工具

- URL: https://www.aigclub.com/zh/tools/html-minifier/
- Category: developer-tools
- Direct answer: HTML 压缩会缩短标签、属性和标签之间的排版空白，但不应盲目删除文本节点、script、style、pre 或 textarea 中的内容。本工具采用保守策略：保留这些敏感区域，移除普通注释，保留条件注释和以感叹号标记的保留注释，避免把可见空格或代码语义意外改掉。
- Related tools: xml-formatter, json-minifier
- Related articles: script-style-minification-limits, safe-html-before-publish-checklist

#### HTTP 状态码查询工具

- URL: https://www.aigclub.com/zh/tools/http-status-code-reference/
- Category: developer-tools
- Direct answer: HTTP 状态码查询工具把常见 1xx、2xx、3xx、4xx 和 5xx 响应映射为易读说明和排查建议。它是浏览器本地静态参考表，不是网络诊断、可用性检测或接口监控工具。
- Related tools: url-parser, query-string-parser, unix-timestamp-converter
- Related articles: http-status-code-reference-guide

#### 图片裁剪工具

- URL: https://www.aigclub.com/zh/tools/image-cropper/
- Category: image-tools
- Direct answer: 图片裁剪工具从最初选择的静态位图取出一个矩形。X、Y 表示左上角，宽度和高度决定输出尺寸。把 2400 × 1600 横图居中裁成正方形时，可输入 X 400、Y 0、宽 1600、高 1600。矩形必须位于源图内，只有返回 Blob MIME 与请求格式一致时才按该格式命名下载。
- Related tools: image-resizer, image-format-converter
- Related articles: crop-image-to-square-guide, crop-vs-resize-guide, browser-local-image-privacy-guide

#### 图片格式转换工具

- URL: https://www.aigclub.com/zh/tools/image-format-converter/
- Category: image-tools
- Direct answer: 图片格式转换工具会解码最初选择的静态位图，以相同宽高重新编码为 PNG、JPEG 或 WebP，而不是只改文件名。每次转换都从源图选择开始，不以上一次预览为输入；本实现导出 JPEG 前会把画布铺成白色。浏览器若回退到其他 MIME，工具会报告不匹配，不会配上误导扩展名。
- Related tools: image-cropper, image-resizer
- Related articles: jpeg-png-webp-format-guide, image-file-size-dimensions-guide, browser-local-image-privacy-guide

#### 图片尺寸调整工具

- URL: https://www.aigclub.com/zh/tools/image-resizer/
- Category: image-tools
- Direct answer: 图片尺寸调整工具会把最初选择的静态位图重新绘制到指定宽高的 Canvas。原图为 4000 × 3000、锁定比例并把宽度改成 1200 时，高度会计算为 900。每次生成都读取原始选择，而不是上一次导出；只有浏览器返回的 Blob MIME 与所选 PNG、JPEG 或 WebP 一致时才提供下载。
- Related tools: image-cropper, image-format-converter
- Related articles: crop-vs-resize-guide, image-file-size-dimensions-guide, jpeg-png-webp-format-guide, browser-local-image-privacy-guide

#### JavaScript 美化工具

- URL: https://www.aigclub.com/zh/tools/javascript-beautifier/
- Category: developer-tools
- Direct answer: JavaScript 美化工具适合把紧凑脚本整理成 2 空格缩进的可读版本，并在输出前检查注释、引号、模板字符串、正则字面量和括号是否闭合。它不会运行代码、调用依赖、解析 source map、压缩代码或判断业务逻辑是否正确。
- Related tools: regex-tester, css-minifier
- Related articles: none

#### JSON 压缩工具

- URL: https://www.aigclub.com/zh/tools/json-minifier/
- Category: developer-tools
- Direct answer: JSON 压缩会依次执行 JSON.parse 和 JSON.stringify。它能校验标准 JSON 并移除排版空白，但不是字节保持转换：重复键只保留最后值，大整数或非有限数值可能改变，负零会变为零，整数形式的对象键也可能重新排序。
- Related tools: none
- Related articles: json-minify-vs-format-guide, json-minifier-api-request-body-guide, json-minifier-validation-errors-guide

#### JSON 脱敏工具

- URL: https://www.aigclub.com/zh/tools/json-redactor/
- Category: security-privacy
- Direct answer: JSON 脱敏工具会在浏览器本地使用 JSON.parse 解析输入，再按常见敏感键名和用户补充字段名递归替换字段值，输出可读缩进的 JSON 与命中字段数量。它不执行 JSON 内容、不请求远程 schema 或规则库，也不替代日志安全平台、配置审计、合规判断或发布审批。
- Related tools: sensitive-data-masker
- Related articles: none

#### JSON 转 CSV 工具

- URL: https://www.aigclub.com/zh/tools/json-to-csv-converter/
- Category: developer-tools
- Direct answer: JSON 转 CSV 最适合一个对象或一组结构相近的对象。本工具会从所有对象键生成表头、转义 CSV 单元格、把嵌套 JSON 保留为可复核的字符串，并且全程在浏览器本地运行。
- Related tools: csv-to-json-converter, json-minifier
- Related articles: none

#### JSONPath 测试工具

- URL: https://www.aigclub.com/zh/tools/jsonpath-tester/
- Category: developer-tools
- Direct answer: JSONPath 测试工具支持 $ 根节点、点属性、括号属性、数组索引、通配符、递归下降，以及 ?(@.price < 10) 这类简单比较过滤。它不会执行脚本、函数、任意表达式、网络请求或非本地数据访问。
- Related tools: json-minifier, json-to-csv-converter, regex-tester
- Related articles: none

#### 闰年判断工具

- URL: https://www.aigclub.com/zh/tools/leap-year-checker/
- Category: date-time-tools
- Direct answer: 公历闰年的规则是：年份能被 400 整除，或者能被 4 整除但不能被 100 整除。闰年有 366 天，2 月有 29 天；平年有 365 天，2 月有 28 天。
- Related tools: day-of-year-calculator, date-add-subtract-calculator, week-number-calculator
- Related articles: none

#### 长度单位转换器

- URL: https://www.aigclub.com/zh/tools/length-converter/
- Category: converters
- Direct answer: 长度单位转换器会在浏览器本地以米为基准，把毫米、厘米、米、千米、英寸、英尺、码和英里互相换算。结果适合日常参考；涉及正式图纸、测量验收或设备标准时，应再核对原始标准和测量工具。
- Related tools: weight-converter, temperature-converter
- Related articles: none

#### 行筛选工具

- URL: https://www.aigclub.com/zh/tools/line-filter-tool/
- Category: text-tools
- Direct answer: 本工具在浏览器本地按行筛选文本。你可以移除空行，也可以输入关键词后保留包含该关键词的行，或移除包含该关键词的行。
- Related tools: line-number-adder, find-replace-tool, whitespace-cleaner
- Related articles: none

#### 行号添加工具

- URL: https://www.aigclub.com/zh/tools/line-number-adder/
- Category: text-tools
- Direct answer: 本工具在浏览器本地按行添加编号，默认从 1 开始，也可以输入起始数字。选择跳过空行时，空白行会保留原样但不占用编号。
- Related tools: line-filter-tool, find-replace-tool, whitespace-cleaner
- Related articles: none

#### 列表随机排序工具

- URL: https://www.aigclub.com/zh/tools/list-randomizer/
- Category: text-tools
- Direct answer: 列表随机排序工具会把每一行当作一个列表项，并使用浏览器内置随机数在本地重排顺序。它适合日常分组、练习顺序、草稿轮换和测试样本打散；不适合监管抽奖、奖品发放、密码学安全选择或任何需要可审计随机性的场景。
- Related tools: text-sorter, comma-separated-list-converter, line-filter-tool
- Related articles: none

#### 通用平台费用估算器

- URL: https://www.aigclub.com/zh/tools/marketplace-fee-estimator-basic/
- Category: commerce-tools
- Direct answer: 通用平台费用估算器会在浏览器本地按你手动输入的费率和固定费用估算总费用、费用占比和扣除后金额。它不包含任何平台实时费率或最终结算规则，不提供税务、法律、投资、财务、会计、物流合规或平台合规方面的专业意见，也不承诺平台最终费用、平台费或结算结果与实际一致。
- Related tools: none
- Related articles: none

#### 月份差计算器

- URL: https://www.aigclub.com/zh/tools/month-difference-calculator/
- Category: date-time-tools
- Direct answer: 月份差计算器会比较两个日期，输出完整月份差、剩余天数、总天数参考和方向说明。月末日期按自然月 clamp 处理，例如 1 月 31 日到 2 月 28 日不会机械按 31 天一个月。
- Related tools: date-difference-calculator, date-add-subtract-calculator, days-until-calculator
- Related articles: none

#### 密码短语生成器

- URL: https://www.aigclub.com/zh/tools/passphrase-generator/
- Category: security-privacy
- Direct answer: 密码短语生成器会在浏览器本地使用 Web Crypto getRandomValues 从内置词表选择词条，生成 1–50 条可复制的密码短语草稿。它只做本地辅助生成，不保存历史记录，也不替代密码管理器、密钥管理、访问控制或组织安全流程。
- Related tools: none
- Related articles: none

#### 密码强度检查器

- URL: https://www.aigclub.com/zh/tools/password-strength-checker/
- Category: security-privacy
- Direct answer: 密码强度检查器会根据长度和字符类型加分，并对常见密码、连续重复、简单顺序和单一字符类型扣分。结果只是浏览器本地估算，不能证明密码绝对安全、从未复用或没有出现在泄露数据中。
- Related tools: passphrase-generator
- Related articles: none

#### 百分点计算器

- URL: https://www.aigclub.com/zh/tools/percentage-point-calculator/
- Category: calculators
- Direct answer: 百分点计算器会在浏览器本地比较起始百分比和结束百分比，输出百分点差和相对百分比变化。百分点差不同于百分比变化，本工具不提供投资、贷款、税务、医疗、法律、财务、会计、平台结算或专业判断。
- Related tools: ratio-calculator
- Related articles: none

#### 功率单位转换器

- URL: https://www.aigclub.com/zh/tools/power-converter/
- Category: converters
- Direct answer: 功率单位转换器会在浏览器本地以 W 为基准，在 W、kW、MW、hp(metric)、hp(mechanical) 和 BTU/h 之间换算。公制马力和机械马力使用不同常量；工具不判断电机选型、设备安全、能效、功放、热设计或合规。
- Related tools: energy-converter, force-converter, torque-converter
- Related articles: none

#### 前后缀添加工具

- URL: https://www.aigclub.com/zh/tools/prefix-suffix-adder/
- Category: text-tools
- Direct answer: 本工具在浏览器本地为每一行添加你填写的前缀和后缀。前缀和后缀按普通文本处理，不会作为正则表达式、模板语言或脚本执行；选择跳过空行时，空白行会保留原样但不添加内容。
- Related tools: find-replace-tool, line-number-adder, text-sorter, whitespace-cleaner
- Related articles: none

#### 压力单位转换器

- URL: https://www.aigclub.com/zh/tools/pressure-converter/
- Category: converters
- Direct answer: 压力单位转换器会在浏览器本地以 Pa 为基准，在 Pa、kPa、MPa、bar、mbar、atm、psi、mmHg 和 inHg 之间换算。它只做普通单位口径转换，不判断轮胎、潜水、气瓶、医疗血压、实验室真空、工业设备或安全阈值。
- Related tools: force-converter, density-converter, power-converter
- Related articles: none

#### 比例求值计算器

- URL: https://www.aigclub.com/zh/tools/proportion-calculator/
- Category: calculators
- Direct answer: 比例求值计算器会在浏览器本地根据 a/b = c/x 或 a/b = x/d 求缺失项 x，并展示使用的公式。它不做合同、剂量、工程配比、投资、贷款、税务、医疗、法律、财务、会计或专业建议。
- Related tools: ratio-calculator, unit-rate-calculator
- Related articles: none

#### Query String 解析器

- URL: https://www.aigclub.com/zh/tools/query-string-parser/
- Category: developer-tools
- Direct answer: Query String 解析器会读取 ? 后面的参数，按 & 拆分键值对，按查询字符串规则解码百分号编码和加号空格，并保留重复键的出现顺序。重复键不会被最后一个值覆盖，而是在分组 JSON 中保存为数组。
- Related tools: json-to-csv-converter
- Related articles: repeated-query-parameters-guide, query-string-vs-url-encoding-guide

#### 比例计算器

- URL: https://www.aigclub.com/zh/tools/ratio-calculator/
- Category: calculators
- Direct answer: 比例计算器会在浏览器本地把 A:B 或两个数字化简为比例，并给出 A ÷ B 的小数和百分比。它不提供合同、剂量、工程配比、投资、贷款、税务、医疗、法律或财务判断。
- Related tools: proportion-calculator, unit-rate-calculator
- Related articles: none

#### 正则表达式测试器

- URL: https://www.aigclub.com/zh/tools/regex-tester/
- Category: developer-tools
- Direct answer: 正则表达式测试器使用当前浏览器的 JavaScript RegExp。界面接受 g、i、m、s、u、y，最多展示 100 个匹配，并显示编号/命名捕获组和替换预览。它不能代表 PCRE、Python、Java 或 .NET 引擎，也不能穷尽判断 ReDoS 风险。
- Related tools: text-diff-checker, url-parser, cron-expression-parser
- Related articles: regex-tester-guide, catastrophic-backtracking-regex-guide

#### robots.txt 检查工具

- URL: https://www.aigclub.com/zh/tools/robots-txt-tester/
- Category: seo-marketing
- Direct answer: 粘贴准备发布的文本，输入 Googlebot 这类精确 product token，再测试站内路径或完整 HTTP URL。结果只覆盖 User-agent、Allow 和 Disallow：工具不会抓取线上文件，不解释 Sitemap、Crawl-delay 或各爬虫私有扩展，也不能证明实际抓取、收录或排名。
- Related tools: none
- Related articles: robots-txt-check-before-publish, sitemap-url-extraction-guide

#### 四舍五入计算器

- URL: https://www.aigclub.com/zh/tools/rounding-calculator/
- Category: calculators
- Direct answer: 四舍五入计算器会在浏览器本地按指定位数整理数字，输出四舍五入后的显示结果。它只是显示和资料整理口径，不是财务、税务、平台结算、会计、法律、医疗或专业规则。
- Related tools: square-root-calculator, percentage-point-calculator
- Related articles: none

#### 比例缩放计算器

- URL: https://www.aigclub.com/zh/tools/scale-calculator/
- Category: calculators
- Direct answer: 比例缩放计算器会在浏览器本地根据原始宽高、缩放倍数或目标尺寸计算等比缩放结果。它不判断打印、工程、设计验收、屏幕适配、平台上传、法律或专业要求。
- Related tools: aspect-ratio-calculator, ratio-calculator, rounding-calculator
- Related articles: none

#### 敏感信息脱敏工具

- URL: https://www.aigclub.com/zh/tools/sensitive-data-masker/
- Category: security-privacy
- Direct answer: 敏感信息脱敏工具会在浏览器本地用规则匹配常见邮箱、手机号样式、长数字编号、IPv4、URL 查询参数和疑似 Token/API key 片段，并输出脱敏文本与命中计数。它不上传、不保存原文，也不替代 DLP、PII 扫描、日志治理、访问控制、合规判断或安全审计。
- Related tools: json-redactor
- Related articles: none

#### SKU 生成器

- URL: https://www.aigclub.com/zh/tools/sku-generator/
- Category: commerce-tools
- Direct answer: SKU 生成器会在浏览器本地把品牌前缀、类目代码、商品代码、规格代码和序号拼接成统一格式的内部 SKU 草稿。它不生成 GTIN、EAN、UPC 或任何官方商品条码，不检查历史重复，不保存输入，也不连接平台、数据库、库存系统或外部服务。
- Related tools: none
- Related articles: none

#### Slug 生成器

- URL: https://www.aigclub.com/zh/tools/slug-generator/
- Category: text-tools
- Direct answer: 本工具在浏览器本地从标题或短文本生成 slug。你可以选择连字符或下划线、是否小写化，以及保留或移除中文等非拉丁字符；工具不会进行拼音转写、翻译或 SEO 排名判断。
- Related tools: case-converter, whitespace-cleaner, prefix-suffix-adder, find-replace-tool
- Related articles: none

#### 速度单位转换器

- URL: https://www.aigclub.com/zh/tools/speed-converter/
- Category: converters
- Direct answer: 速度单位转换器会在浏览器本地以 m/s 为基准，在 m/s、km/h、mph、ft/s 和 knot 之间换算。它只做单位换算，不测量设备速度、不处理路线距离，也不提供车辆、航空、航海或法律限速建议。
- Related tools: length-converter, weight-converter, temperature-converter
- Related articles: none

#### 平方根计算器

- URL: https://www.aigclub.com/zh/tools/square-root-calculator/
- Category: calculators
- Direct answer: 平方根计算器会在浏览器本地计算非负数字的平方根，并给出平方校验。负数会返回错误；工具不处理复数，也不提供投资、贷款、税务、医疗、法律、财务、会计或工程判断。
- Related tools: rounding-calculator, average-calculator
- Related articles: none

#### 温度转换器

- URL: https://www.aigclub.com/zh/tools/temperature-converter/
- Category: converters
- Direct answer: 温度转换器会在浏览器本地按标准公式在摄氏度、华氏度和开尔文之间换算，并拒绝低于绝对零度的输入。结果适合学习和日常参考，不用于健康判断、实验读数或安全临界值决策。
- Related tools: length-converter, weight-converter
- Related articles: none

#### 文本差异对比工具

- URL: https://www.aigclub.com/zh/tools/text-diff-checker/
- Category: text-tools
- Direct answer: 文本差异对比工具用于快速查看两段文本之间新增、删除和未变化的行或词。它适合短文案、FAQ、配置片段、邮件草稿和发布说明复核；结果在浏览器本地生成，需要人工确认上下文、格式和最终版本。
- Related tools: find-replace-tool, line-filter-tool, whitespace-cleaner
- Related articles: none

#### 文本反转工具

- URL: https://www.aigclub.com/zh/tools/text-reverser/
- Category: text-tools
- Direct answer: 文本反转工具可以在浏览器本地按行、按词或按字符反转粘贴文本。按行反转会改变行顺序，按词反转会改变非空白词块顺序并尽量保留分隔空白，按字符反转会优先使用浏览器 grapheme 分段来更稳妥地处理 emoji、组合音标和复杂 Unicode 字符。
- Related tools: text-sorter, whitespace-cleaner, line-filter-tool
- Related articles: none

#### 文本排序工具

- URL: https://www.aigclub.com/zh/tools/text-sorter/
- Category: text-tools
- Direct answer: 本工具在浏览器本地对多行文本排序，支持文本排序、数字排序和按长度排序。你可以明确选择升序或降序、是否按修剪后的行或忽略大小写参与比较，并指定空行参与排序、置顶或置底；工具不会隐式去重或删除内容。
- Related tools: whitespace-cleaner, line-filter-tool, comma-separated-list-converter
- Related articles: none

#### 时间间隔计算器

- URL: https://www.aigclub.com/zh/tools/time-diff-calculator/
- Category: date-time-tools
- Direct answer: 时间间隔计算器会比较开始时间和结束时间，输出总分钟差，并拆分为天、小时、分钟。结束时间早于开始时间时，总分钟差会以负数提示，便于发现输入顺序问题。
- Related tools: date-difference-calculator, age-calculator, week-number-calculator
- Related articles: none

#### 时间单位转换器

- URL: https://www.aigclub.com/zh/tools/time-unit-converter/
- Category: converters
- Direct answer: 时间单位转换器会在浏览器本地以秒为基准，在 ms、s、min、h、day 和 week 之间换算固定时长。它允许负数作为有符号时长差，但不处理日历日期、月份、年份、时区、夏令时、节假日、合同期限、工资工时或正式截止日期判断。
- Related tools: time-diff-calculator, frequency-converter, angle-converter
- Related articles: none

#### 时区转换器

- URL: https://www.aigclub.com/zh/tools/time-zone-converter/
- Category: date-time-tools
- Direct answer: 时区转换器会把源时区中的日期时间换算为目标时区时间和 UTC 时间，并显示源/目标 UTC offset。结果依赖浏览器的 IANA 时区数据和 DST 规则，不替代航班、交易、法律或跨境合规时间确认。
- Related tools: time-diff-calculator, countdown-calculator, unix-timestamp-converter
- Related articles: none

#### TOML 格式化工具

- URL: https://www.aigclub.com/zh/tools/toml-formatter/
- Category: developer-tools
- Direct answer: TOML 格式化工具会整理常见排版问题，并提示未闭合引号、数组、表头或缺少键值分隔符等明显边界。它适合复核可读配置片段，但不能证明 Cargo、Python、Hugo、Taplo 或其他工具一定接受所有特定字段。
- Related tools: yaml-formatter, xml-formatter
- Related articles: none

#### 扭矩单位转换器

- URL: https://www.aigclub.com/zh/tools/torque-converter/
- Category: converters
- Direct answer: 扭矩单位转换器会在浏览器本地以 N·m 为基准，在 N·m、lbf·ft、lbf·in、kgf·m 和 kgf·cm 之间换算。它只做单位口径转换，不判断汽车维修扭矩、螺栓等级、工具校准、机械安全或工程规范。
- Related tools: force-converter, angle-converter, power-converter
- Related articles: none

#### 单位率计算器

- URL: https://www.aigclub.com/zh/tools/unit-rate-calculator/
- Category: calculators
- Direct answer: 单位率计算器会在浏览器本地用总量除以数量，输出每单位值。它不替代报价、费用、平台规则、投资、贷款、税务、医疗、法律、财务、会计或专业判断。
- Related tools: ratio-calculator, average-calculator
- Related articles: none

#### Unix 时间戳转换器

- URL: https://www.aigclub.com/zh/tools/unix-timestamp-converter/
- Category: developer-tools
- Direct answer: Unix 时间戳表示从 1970-01-01 00:00:00 UTC 起经过的秒数或毫秒数。本工具自动识别常见的 10 位秒级和 13 位毫秒级输入，并同时显示本地时间、UTC 与 ISO 8601；时区只影响可读显示，不改变它表示的绝对时间点。
- Related tools: none
- Related articles: none

#### URL 解析器

- URL: https://www.aigclub.com/zh/tools/url-parser/
- Category: developer-tools
- Direct answer: URL 解析器会使用标准 URL 语法拆解协议、Origin、用户名、密码、Host、主机名、端口、路径、查询字符串、片段标识和查询参数。它适合调试链接结构，但不会发起网络请求、验证目标页面是否存在，或判断域名是否可信。
- Related tools: query-string-parser
- Related articles: url-parser-vs-query-string-parser, safe-url-inspection-boundaries

#### 体积单位转换器

- URL: https://www.aigclub.com/zh/tools/volume-converter/
- Category: converters
- Direct answer: 体积单位转换器会在浏览器本地以升为基准，在 mL、L、m³、cm³、in³、ft³ 和常见美制液量单位之间换算。它只按固定常量处理普通单位口径，不处理地方标准、容器误差、温度膨胀、配方安全或实验室校准。
- Related tools: area-converter, length-converter, weight-converter
- Related articles: none

#### 体积重计算器

- URL: https://www.aigclub.com/zh/tools/volumetric-weight-calculator/
- Category: commerce-tools
- Direct answer: 体积重计算器会在浏览器本地按“长 × 宽 × 高 ÷ 体积重除数”估算体积重，并可与实际重量比较较大重量参考。不同物流商、平台、线路和渠道可能使用不同规则，结果不能替代平台后台、物流商账单或正式报价。
- Related tools: weight-converter, break-even-calculator
- Related articles: none

#### 周数计算器

- URL: https://www.aigclub.com/zh/tools/week-number-calculator/
- Category: date-time-tools
- Direct answer: 周数计算器会按 ISO-8601 规则输出日期所属的 ISO 周年、周数、星期序号和本周日期范围。ISO 周从周一开始，包含当年第一个周四的那一周是第 1 周。
- Related tools: date-difference-calculator, business-days-calculator, time-diff-calculator
- Related articles: none

#### 重量单位转换器

- URL: https://www.aigclub.com/zh/tools/weight-converter/
- Category: converters
- Direct answer: 重量单位转换器会在浏览器本地以克为基准，在毫克、克、千克、吨、盎司和磅之间换算。页面使用日常“重量”表达，结果适合一般参考；处方、营养精算、贸易结算或正式检测场景应按专业规则核对。
- Related tools: length-converter, temperature-converter
- Related articles: none

#### 空格与换行清理工具

- URL: https://www.aigclub.com/zh/tools/whitespace-cleaner/
- Category: text-tools
- Direct answer: 本工具在浏览器本地清理文本空白，默认裁剪每行首尾空格、合并连续空格、统一换行为 LF，并压缩多余空行；也可以把多行内容压缩成单行。工具会显示清理前后的字符数和行数变化，但不会改写文本语义。
- Related tools: case-converter, line-filter-tool, find-replace-tool
- Related articles: none

#### 工作时长计算器

- URL: https://www.aigclub.com/zh/tools/working-hours-calculator/
- Category: date-time-tools
- Direct answer: 工作时长计算器会用结束时间减去开始时间，再扣除休息分钟数，输出总在岗分钟、净工作分钟、十进制小时和小时分钟拆分。跨午夜班次需要明确开启，结果只反映输入口径，不代表劳动法或薪资结论。
- Related tools: time-diff-calculator, business-days-calculator, date-difference-calculator, time-zone-converter
- Related articles: none

#### XML 格式化工具

- URL: https://www.aigclub.com/zh/tools/xml-formatter/
- Category: developer-tools
- Direct answer: XML 格式化会先检查输入是否结构良好，再按 2 空格缩进输出；XML 压缩会移除标签之间的排版空白。工具不会验证 DTD、XML Schema、命名空间语义或接口业务规则，重要配置仍需对照目标系统复核。
- Related tools: json-minifier
- Related articles: xml-format-vs-minify-guide

#### YAML 格式化工具

- URL: https://www.aigclub.com/zh/tools/yaml-formatter/
- Category: developer-tools
- Direct answer: YAML 格式化工具会先解析输入，再输出 2 空格缩进的 YAML 或校验摘要。它适合检查配置、front matter 和工作流文件，但不会验证应用 schema、密钥安全、部署风险或平台规则。
- Related tools: xml-formatter, json-minifier
- Related articles: none

### Articles

#### 浏览器本地图片处理的隐私边界与测试

- URL: https://www.aigclub.com/zh/articles/browser-local-image-privacy-guide/
- Category: image-tools
- Direct answer: AIGClub 图片处理器通过浏览器对象 URL 读取所选文件，解码为 Image，绘制到 Canvas，创建 Blob，再把 Blob 连接到下载链接；处理器中没有上传所选图片的应用请求。页面仍可能请求分析、监控、广告、字体或其他资源，浏览器扩展和设备软件也在处理器边界之外。应使用可信环境，以合成图片测试并检查网络请求、复核下载结果，不能把本地处理等同于绝对隐私。
- Related tools: image-cropper, image-resizer, image-format-converter
- Related articles: crop-vs-resize-guide, jpeg-png-webp-format-guide

#### 如何降低正则灾难性回溯风险

- URL: https://www.aigclub.com/zh/articles/catastrophic-backtracking-regex-guide/
- Category: developer-tools
- Direct answer: catastrophic backtracking regex 风险出现在不可信输入可能增长、模式又包含嵌套或重叠重复时。应避免 (a+)+$ 这类结构，把规则收窄为更明确的 token 或分步解析，增加锚点、输入上限和运行时超时，并在最终部署引擎里对逐步增长的不命中样本计时。静态提示只能作为启发式信号。
- Related tools: regex-tester
- Related articles: regex-tester-guide

#### 5 字段 Cron 和 Quartz Cron 有什么区别

- URL: https://www.aigclub.com/zh/articles/cron-five-field-vs-quartz-guide/
- Category: developer-tools
- Direct answer: 5 字段 Unix Cron 是 minute hour day-of-month month day-of-week。Quartz 常在前面增加秒、末尾可增加年份，并定义 ?、L、W、# 等字符。解析器应拒绝错误方言而不是静默错位；本站只接受页面声明的五字段子集和常见宏。
- Related tools: cron-expression-parser, date-format-converter
- Related articles: cron-schedule-debugging-checklist

#### Cron 任务没有按预期运行的排查清单

- URL: https://www.aigclub.com/zh/articles/cron-schedule-debugging-checklist/
- Category: developer-tools
- Direct answer: 排查 Cron 时，先确认目标调度器方言和字段数量，再预览未来运行时间；随后核对时区、日期/星期规则、部署环境、任务权限、最近执行日志和失败响应。浏览器本地解析只能帮助检查表达式，不能证明生产任务一定会执行。
- Related tools: cron-expression-parser, unix-timestamp-converter, http-status-code-reference
- Related articles: cron-five-field-vs-quartz-guide

#### 用精确坐标把图片裁成正方形

- URL: https://www.aigclub.com/zh/articles/crop-image-to-square-guide/
- Category: image-tools
- Direct answer: 把正方形边长设为源图宽高中较小的一边。几何居中时，在长边方向留出两边差值的一半。2400 × 1600 横图应使用边长 1600、X =（2400 − 1600）÷ 2 = 400、Y = 0。主体偏心时再移动 X 或 Y，并在实际接收端复核下载结果。
- Related tools: image-cropper, image-resizer
- Related articles: crop-vs-resize-guide, image-file-size-dimensions-guide

#### 裁剪、调整尺寸还是转换格式

- URL: https://www.aigclub.com/zh/articles/crop-vs-resize-guide/
- Category: image-tools
- Direct answer: 需要移除边缘、改变构图或宽高比时用裁剪；需要改变像素网格且通常保留当前构图时用尺寸调整；只改变编码而不改网格时用格式转换。接收端同时规定形状与尺寸时，先裁剪、再调整尺寸、最后按接收端编码，并保留源图、减少不必要的有损导出。
- Related tools: image-cropper, image-resizer, image-format-converter
- Related articles: crop-image-to-square-guide, image-file-size-dimensions-guide, jpeg-png-webp-format-guide

#### 如何安全地把 CSV 转成 JSON

- URL: https://www.aigclub.com/zh/articles/csv-to-json-converter-guide/
- Category: developer-tools
- Direct answer: CSV 转 JSON 时，通常把第一行作为表头，把后续每一行转换为对象。除非目标 schema 明确要求，否则先让值保持字符串，并在导入前复核行数、表头、分隔符和引号字段。
- Related tools: csv-to-json-converter
- Related articles: none

#### API 调试时如何阅读 HTTP 状态码

- URL: https://www.aigclub.com/zh/articles/http-status-code-reference-guide/
- Category: developer-tools
- Direct answer: 阅读 HTTP 状态码时，先判断类别：2xx 表示协议层请求成功，3xx 表示重定向或缓存行为，4xx 通常表示当前请求不能被接受，5xx 通常表示服务器或上游失败。然后再结合方法、URL、请求头、响应体和日志确认原因。
- Related tools: http-status-code-reference, url-parser
- Related articles: url-parser-vs-query-string-parser

#### 图片像素尺寸与文件大小不是一回事

- URL: https://www.aigclub.com/zh/articles/image-file-size-dimensions-guide/
- Category: image-tools
- Direct answer: 2400 × 1600 图片有 3840000 个像素，等比例调整为 1200 × 800 后有 960000 个像素，即四分之一；下载字节却不一定也正好变为四分之一。格式、画面细节、透明度、编码器和质量设置都会改变结果。应先选择足够的尺寸，再在可接受画质下测量真实文件。
- Related tools: image-resizer, image-format-converter
- Related articles: crop-vs-resize-guide, jpeg-png-webp-format-guide

#### 按要求选择 JPEG、PNG 或 WebP

- URL: https://www.aigclub.com/zh/articles/jpeg-png-webp-format-guide/
- Category: image-tools
- Direct answer: 照片交付路径接受有损且不需要 Alpha 时可选 JPEG；透明度或锐利图形重要、实测大小可接受时可选 PNG；接收端明确接受 WebP 且实测结果合适时再用 WebP。无论哪种格式，都要核对返回 MIME、尺寸、背景或透明度、可见失真、字节数与接收端；这里不保证某格式一定最小或所有浏览器都能编码。
- Related tools: image-format-converter, image-resizer
- Related articles: image-file-size-dimensions-guide, browser-local-image-privacy-guide

#### API 请求体中的 JSON 什么时候需要压缩？

- URL: https://www.aigclub.com/zh/articles/json-minifier-api-request-body-guide/
- Category: developer-tools
- Direct answer: API 请求体需要放入单行字段、命令行参数或文档片段时，可以压缩 JSON；排查字段层级和错误时，应保留格式化版本。压缩前必须先解析校验，且重要接口仍要对照文档检查字段、类型、签名和敏感数据。
- Related tools: json-minifier
- Related articles: json-minify-vs-format-guide

#### JSON 压缩前为什么必须先校验？常见错误排查

- URL: https://www.aigclub.com/zh/articles/json-minifier-validation-errors-guide/
- Category: developer-tools
- Direct answer: JSON 压缩前必须先校验，因为只有合法 JSON 才能安全地移除排版空白。常见错误包括单引号、未加引号的键名、尾随逗号、注释、括号不匹配、字符串里的未转义换行，以及复制时漏掉开头或结尾。
- Related tools: json-minifier
- Related articles: json-minify-vs-format-guide, json-minifier-api-request-body-guide

#### JSON 压缩和格式化有什么区别？

- URL: https://www.aigclub.com/zh/articles/json-minify-vs-format-guide/
- Category: developer-tools
- Direct answer: JSON 压缩输出紧凑的序列化文本，格式化输出带缩进的序列化文本。本站两者都会先解析，因此重复键、大整数、负零、数字写法和整数形式键序可能改变；不能用于保持精确字节，也不替代 schema、隐私或安全复核。
- Related tools: json-minifier
- Related articles: json-minifier-api-request-body-guide, json-minifier-validation-errors-guide

#### Query String 解析和 URL 编码有什么区别

- URL: https://www.aigclub.com/zh/articles/query-string-vs-url-encoding-guide/
- Category: developer-tools
- Direct answer: Query String 解析是把 ? 后面的内容拆成参数；URL 编码是把空格、中文和特殊字符转换为百分号序列。解析不会自动证明链接有效，编码也不是加密。调试时通常先解析结构，再按需要检查单个值的编码。
- Related tools: query-string-parser
- Related articles: repeated-query-parameters-guide, url-parser-vs-query-string-parser

#### 如何用可复现样本测试 JavaScript 正则

- URL: https://www.aigclub.com/zh/articles/regex-tester-guide/
- Category: developer-tools
- Direct answer: 测试浏览器 JavaScript RegExp 时，应记录模式、标志、目标样本、预期区间和捕获组。本站界面接受 gimsuy，保留模式首尾字面空格，为预览内部收集全局匹配，最多显示 100 条；最终表达式仍要在部署引擎中重测。
- Related tools: regex-tester
- Related articles: catastrophic-backtracking-regex-guide

#### 重复 Query 参数应该如何处理

- URL: https://www.aigclub.com/zh/articles/repeated-query-parameters-guide/
- Category: developer-tools
- Direct answer: 遇到重复 Query 参数时，调试阶段应先保留所有值和出现顺序。不要假设最后一个值一定生效；目标系统可能取第一个、取最后一个、合并为数组，或把重复参数视为错误。
- Related tools: query-string-parser, json-to-csv-converter
- Related articles: query-string-vs-url-encoding-guide

#### 发布 robots.txt 前建立路径测试矩阵

- URL: https://www.aigclub.com/zh/articles/robots-txt-check-before-publish/
- Category: seo-marketing-tools
- Direct answer: 发布前至少检查：一个精确命名 token、星号回退、一个应公开路径、一个明确禁止路径、一个更长 Allow 例外，以及一个带查询字符串的模式。Sitemap 和 crawler 私有字段另行复核。上线后再请求真实 `/robots.txt`，核对响应与正文；本地显示允许不等于外部平台已经抓取或收录。
- Related tools: robots-txt-tester
- Related articles: sitemap-url-extraction-guide, search-snippet-preview-limitations

#### HTML 压缩后发布前检查清单

- URL: https://www.aigclub.com/zh/articles/safe-html-before-publish-checklist/
- Category: developer-tools
- Direct answer: 发布前至少检查五件事：可见文案没有被粘连，script/style/pre/textarea 没被改坏，模板占位符仍可识别，必须保留的注释仍存在，输入和输出里没有敏感信息。最后在目标环境中预览或运行测试。
- Related tools: html-minifier
- Related articles: script-style-minification-limits

#### 不打开链接时如何检查 URL 结构

- URL: https://www.aigclub.com/zh/articles/safe-url-inspection-boundaries/
- Category: developer-tools
- Direct answer: 不打开链接时，可以先把完整 URL 粘贴到本地解析器，检查协议、Host、路径、查询参数、片段和可疑的用户名密码字段。这个方法能帮助理解结构，但不能判断链接是否恶意、域名是否可信或页面内容是否安全。
- Related tools: url-parser, query-string-parser
- Related articles: url-parser-vs-query-string-parser, query-string-vs-url-encoding-guide

#### 为什么 HTML 压缩不应顺手压缩 script 和 style？

- URL: https://www.aigclub.com/zh/articles/script-style-minification-limits/
- Category: developer-tools
- Direct answer: HTML 压缩工具应优先处理标记本身，而不是代替 JavaScript 或 CSS 压缩器。script 和 style 内容可能包含字符串、正则、选择器、注释、source map 标记或构建约定，应该由能理解对应语言语法的工具处理。
- Related tools: html-minifier
- Related articles: safe-html-before-publish-checklist

#### 为什么搜索结果展示可能和 Meta 预览不同？

- URL: https://www.aigclub.com/zh/articles/search-snippet-preview-limitations/
- Category: seo-marketing-tools
- Direct answer: 搜索结果展示可能和 Meta 预览不同，是因为搜索引擎会结合查询词、页面正文、设备宽度、地区语言、结构化数据和自身规则选择或改写片段。这类 search snippet preview limitations 的核心是把 preview output 当作本地草稿检查，而不是最终搜索展示保证。
- Related tools: none
- Related articles: robots-txt-check-before-publish

#### sitemap URL 怎么提取？检查 loc 链接和索引文件

- URL: https://www.aigclub.com/zh/articles/sitemap-url-extraction-guide/
- Category: seo-marketing-tools
- Direct answer: 提取 sitemap URL 时，把 sitemap XML 或 sitemap index 文本粘贴到工具中，读取每个 loc 节点并去重输出；随后检查正式域名、关键路径、数量变化和是否混入预览地址。提取 loc 只是在整理文本，不会抓取、提交或证明 URL 已被索引。
- Related tools: none
- Related articles: robots-txt-check-before-publish

#### URL 解析器和 Query String 解析器有什么区别

- URL: https://www.aigclub.com/zh/articles/url-parser-vs-query-string-parser/
- Category: developer-tools
- Direct answer: URL 解析器适合查看完整 URL 的协议、Host、路径、查询字符串和片段；Query String 解析器适合深入检查 ? 后面的键值对、空值、重复键和分组 JSON。完整链接出问题时先用 URL 解析器，只排查参数时用 Query String 解析器。
- Related tools: url-parser, query-string-parser
- Related articles: query-string-vs-url-encoding-guide

#### XML 格式化和压缩有什么区别？

- URL: https://www.aigclub.com/zh/articles/xml-format-vs-minify-guide/
- Category: developer-tools
- Direct answer: XML 格式化用于增加换行和缩进，方便阅读标签层级；XML 压缩用于移除标签之间的排版空白，让文本更紧凑。两者都只处理结构良好的 XML，不会验证 DTD、XSD、命名空间语义或业务字段规则。
- Related tools: xml-formatter
- Related articles: none

## English (en)

- Home: https://www.aigclub.com/en/
- Tools index: https://www.aigclub.com/en/tools/
- Articles index: https://www.aigclub.com/en/articles/
- AI-readable page index: https://www.aigclub.com/en/ai-index/

### Categories

#### Developer Tools

- URL: https://www.aigclub.com/en/categories/developer-tools/
- Direct answer: Start with the artifact you need to inspect. Use JSON tools for standard JSON syntax, URL Parser for the whole link, Query String Parser for parameters after ?, Regex Tester for JavaScript RegExp samples, and Cron Expression Parser for five-field Unix schedules. Each tool documents its parser or runtime boundary; none proves business validity, link safety, cross-engine regex behavior, or scheduler compatibility.
- Published tools: URL Parser, Query String Parser, HTTP Status Code Reference, Cron Expression Parser, Regex Tester, Markdown Table Generator, HTML Minifier, CSS Minifier, JavaScript Beautifier, JSONPath Tester, JSON Minifier, XML Formatter, YAML Formatter, TOML Formatter, CSV to JSON Converter, JSON to CSV Converter, JWT Decoder

#### Browser-local Image Workflow Tools

- URL: https://www.aigclub.com/en/categories/image-tools/
- Direct answer: Use Image Cropper to select composition, Image Resizer to set delivery pixels, and Image Format Converter to choose the final encoding. For a fixed 1200 × 630 banner, crop to the 40:21 shape before resizing to 1200 × 630, then encode once for the destination. Inspect each downloaded result; these browser handlers do not guarantee metadata, animation, color-profile, compatibility, or file-size outcomes.
- Published tools: Image Cropper, Image Resizer, Image Format Converter

#### SEO and Marketing Tools

- URL: https://www.aigclub.com/en/categories/seo-marketing-tools/
- Direct answer: Choose by evidence: use UTM Builder for campaign parameters, Meta Preview for draft length and layout, Robots.txt Tester for pasted access rules, Sitemap URL Extractor for loc inventory, and Keyword List Cleaner for deduplication. None of these outputs proves ranking, crawling, indexing, or campaign performance.
- Published tools: Robots.txt Tester

### Trust Pages

#### About AIGClub

- URL: https://www.aigclub.com/en/about/
- Summary: AIGClub Team is the organizational byline responsible for maintaining the site's tools and explanatory content; it is not a fabricated person or professional credential. Automated checks and AI assistance are not represented as completed page-by-page human review.

#### Contact

- URL: https://www.aigclub.com/en/contact/
- Summary: Send site feedback or correction requests to contact@aigclub.com. Do not send passwords, tokens, private keys, identity documents, payment data, customer records, or other sensitive information.

#### Cookie Policy

- URL: https://www.aigclub.com/en/cookie-policy/
- Summary: AIGClub currently uses Cloudflare, Google Analytics 4, Microsoft Clarity, and 51.la, and selected content pages load the Google AdSense page script. These services may use cookies, pixels or web beacons, scripts, local storage, IP addresses, and device or browser identifiers for delivery, security, analytics, usability, advertising, measurement, frequency control, and abuse prevention.

#### Privacy Policy

- URL: https://www.aigclub.com/en/privacy-policy/
- Summary: AIGClub is a static-first website whose tools are designed to process input in the browser. Public pages currently use Cloudflare, Google Analytics 4, Microsoft Clarity, and 51.la, and selected content pages load the Google AdSense page script. These services may process cookies or similar identifiers, IP addresses, device and browser information, page visits, and interaction events; do not enter secrets or sensitive personal data into online tools.

#### Terms of Use

- URL: https://www.aigclub.com/en/terms/
- Summary: AIGClub provides practical tools and content as general information. Results are drafts or references and do not replace professional, legal, financial, medical, engineering, compliance, or security advice.

### Tools

#### Batch Timestamp Converter

- URL: https://www.aigclub.com/en/tools/batch-timestamp-converter/
- Category: date-time-tools
- Direct answer: For batch Unix timestamp conversion, enter one integer per line, choose auto-detect or force seconds/milliseconds, and select the output format. Auto mode treats 10 digits or fewer as seconds and 11 digits or more as milliseconds after removing a leading minus sign.
- Related tools: date-format-converter
- Related articles: none

#### Checksum Calculator

- URL: https://www.aigclub.com/en/tools/checksum-calculator/
- Category: security-privacy
- Direct answer: Checksum Calculator computes CRC-32, Adler-32, or an 8-bit byte sum from the UTF-8 bytes of your input and shows the hexadecimal value, decimal value, and byte count. Checksums mainly catch accidental errors. For tamper resistance, authentication, or stronger integrity, use a hash, HMAC, or the mechanism required by your protocol.
- Related tools: hmac-generator, cookie-parser
- Related articles: none

#### Cookie Parser

- URL: https://www.aigclub.com/en/tools/cookie-parser/
- Category: security-privacy
- Direct answer: Cookie Parser turns strings such as `name=value; other=123` into a reviewable local table, tries percent-decoding by default, and flags duplicate names, empty values, and decode failures. It does not read browser cookie storage, connect to external services, or replace security audits, privacy compliance, or consent management.
- Related tools: hmac-generator
- Related articles: none

#### Cron Expression Parser

- URL: https://www.aigclub.com/en/tools/cron-expression-parser/
- Category: developer-tools
- Direct answer: The Cron Expression Parser supports five-field Unix cron plus common @hourly, @daily, @weekly, @monthly, and @yearly macros. It explains the dialect, timezone mode, day-of-month versus weekday OR semantics, and previews a limited number of future runs within a 366-day window. Quartz seconds, year fields, and provider-specific syntax are outside scope.
- Related tools: date-format-converter, http-status-code-reference
- Related articles: cron-five-field-vs-quartz-guide, cron-schedule-debugging-checklist

#### CSS Minifier

- URL: https://www.aigclub.com/en/tools/css-minifier/
- Category: developer-tools
- Direct answer: A CSS Minifier should remove only layout whitespace and ordinary comments that do not change CSS meaning. This tool uses a conservative strategy: it preserves strings, url() content, spaces around calc() plus and minus operators, custom-property values, and /*! protected comments, while checking comments, quotes, brackets, parentheses, and braces before returning output.
- Related tools: html-minifier, json-minifier, xml-formatter
- Related articles: none

#### CSV to JSON Converter

- URL: https://www.aigclub.com/en/tools/csv-to-json-converter/
- Category: developer-tools
- Direct answer: CSV to JSON conversion turns each data row into an object and uses the first CSV row as field names. This tool keeps values as strings, supports common quoted CSV fields, and runs in the browser. Review headers, row counts, extra columns, and target API rules before importing the result.
- Related tools: json-minifier
- Related articles: csv-to-json-converter-guide

#### Date Format Converter

- URL: https://www.aigclub.com/en/tools/date-format-converter/
- Category: date-time-tools
- Direct answer: Date format conversion should start by confirming the source format. Auto-detect only accepts unambiguous year-first values; MM/DD/YYYY and DD/MM/YYYY must be selected explicitly so 01/02/2026 is not silently interpreted the wrong way.
- Related tools: day-of-year-calculator
- Related articles: none

#### Day of Year Calculator

- URL: https://www.aigclub.com/en/tools/day-of-year-calculator/
- Category: date-time-tools
- Direct answer: The Day of Year Calculator compares the selected date with January 1 of the same year, returns a 1-based day-of-year number, and shows whether the year has 365 or 366 days.
- Related tools: none
- Related articles: none

#### Exponent Calculator

- URL: https://www.aigclub.com/en/tools/exponent-calculator/
- Category: calculators
- Direct answer: An exponent calculator raises a base to a selected power, such as 2^10, 5^-2, or 9^0.5. Negative exponents are treated as reciprocals, zero to a negative exponent is rejected, and negative bases only support integer exponents because decimal exponents may require complex-number interpretation.
- Related tools: fraction-calculator
- Related articles: none

#### Fraction Calculator

- URL: https://www.aigclub.com/en/tools/fraction-calculator/
- Category: calculators
- Direct answer: A fraction calculator combines two fractions with addition, subtraction, multiplication, or division, then reduces the result by the greatest common divisor. This tool also simplifies a single fraction and displays an improper fraction, mixed number, and decimal approximation.
- Related tools: none
- Related articles: none

#### HMAC Generator

- URL: https://www.aigclub.com/en/tools/hmac-generator/
- Category: security-privacy
- Direct answer: HMAC Generator uses browser Web Crypto to calculate HMAC-SHA-256, HMAC-SHA-384, or HMAC-SHA-512 and returns hex or base64 output. Use test secrets or short-lived debugging secrets only; do not paste production keys, private keys, access tokens, seed phrases, or customer data into an uncontrolled page.
- Related tools: none
- Related articles: none

#### HTML Minifier

- URL: https://www.aigclub.com/en/tools/html-minifier/
- Category: developer-tools
- Direct answer: HTML minifying can shorten tags, attributes, layout whitespace between tags, and ordinary comments, but it should not blindly rewrite text nodes, script, style, pre, or textarea content. This tool uses a conservative strategy: it preserves those sensitive areas, removes ordinary comments, and keeps conditional or bang-preserved comments to avoid accidental semantic changes.
- Related tools: xml-formatter, json-minifier
- Related articles: script-style-minification-limits, safe-html-before-publish-checklist

#### HTTP Status Code Reference

- URL: https://www.aigclub.com/en/tools/http-status-code-reference/
- Category: developer-tools
- Direct answer: The HTTP Status Code Reference maps common 1xx, 2xx, 3xx, 4xx, and 5xx responses to plain-language meanings and debugging notes. It is a static browser-local reference, not a network diagnostic or uptime checker.
- Related tools: url-parser, query-string-parser
- Related articles: http-status-code-reference-guide

#### Image Cropper

- URL: https://www.aigclub.com/en/tools/image-cropper/
- Category: image-tools
- Direct answer: Image Cropper samples a rectangle from the originally selected static bitmap. X and Y identify its top-left pixel; width and height define the output. For a centered square from 2400 × 1600, use X 400, Y 0, width 1600, and height 1600. The rectangle must stay inside the source, and the download extension is derived only after the returned Blob MIME matches the requested format.
- Related tools: image-resizer, image-format-converter
- Related articles: crop-image-to-square-guide, crop-vs-resize-guide, browser-local-image-privacy-guide

#### Image Format Converter

- URL: https://www.aigclub.com/en/tools/image-format-converter/
- Category: image-tools
- Direct answer: Image Format Converter decodes the originally selected static bitmap and re-encodes the same width and height as PNG, JPEG, or WebP. It does not merely rename the file. Each conversion starts from the source selection, not the previous preview; JPEG output is drawn over white in this implementation. If the browser falls back to another MIME, the tool reports the mismatch instead of giving the file a misleading extension.
- Related tools: image-cropper, image-resizer
- Related articles: jpeg-png-webp-format-guide, image-file-size-dimensions-guide, browser-local-image-privacy-guide

#### Image Resizer

- URL: https://www.aigclub.com/en/tools/image-resizer/
- Category: image-tools
- Direct answer: Image Resizer redraws the originally selected static bitmap to a Canvas at the requested width and height. With the ratio lock on, changing 4000 × 3000 to 1200 pixels wide derives 900 pixels high. Every Generate action reads the original selection rather than the previous export, and a download appears only when the returned Blob MIME matches the requested PNG, JPEG, or WebP type.
- Related tools: image-cropper, image-format-converter
- Related articles: crop-vs-resize-guide, image-file-size-dimensions-guide, jpeg-png-webp-format-guide, browser-local-image-privacy-guide

#### JavaScript Beautifier

- URL: https://www.aigclub.com/en/tools/javascript-beautifier/
- Category: developer-tools
- Direct answer: JavaScript Beautifier turns compact scripts into a two-space indented reading draft and checks comments, quotes, template literals, regex literals, and brackets before returning output. It does not run code, load dependencies, parse source maps, minify code, or prove business logic is correct.
- Related tools: regex-tester, css-minifier
- Related articles: none

#### JSON Minifier

- URL: https://www.aigclub.com/en/tools/json-minifier/
- Category: developer-tools
- Direct answer: JSON Minifier runs JSON.parse and then JSON.stringify. That validates standard JSON and removes layout whitespace, but it is not a byte-preserving transform: duplicate keys keep the last value, large or non-finite numeric results can change, negative zero becomes zero, and integer-like object keys can be reordered.
- Related tools: none
- Related articles: json-minify-vs-format-guide, json-minifier-api-request-body-guide, json-minifier-validation-errors-guide

#### JSON to CSV Converter

- URL: https://www.aigclub.com/en/tools/json-to-csv-converter/
- Category: developer-tools
- Direct answer: JSON to CSV conversion works best for one object or an array of similarly shaped objects. This tool builds the header from all object keys, escapes CSV cells, keeps nested JSON reviewable as strings, and runs entirely in the browser.
- Related tools: csv-to-json-converter, json-minifier
- Related articles: none

#### JSONPath Tester

- URL: https://www.aigclub.com/en/tools/jsonpath-tester/
- Category: developer-tools
- Direct answer: JSONPath Tester supports the $ root, dot properties, bracket properties, array indexes, wildcards, recursive descent, and simple comparison filters such as ?(@.price < 10). It does not execute scripts, functions, arbitrary expressions, network requests, or non-local data access.
- Related tools: json-minifier, json-to-csv-converter, regex-tester
- Related articles: none

#### JWT Decoder

- URL: https://www.aigclub.com/en/tools/jwt-decoder/
- Category: developer-tools
- Direct answer: JWT decoding only turns the Base64URL Header and Payload into readable JSON. It does not prove the token is authentic, unchanged, unexpired, or authorized. Important systems must verify the signature and validate claims on the server with trusted keys.
- Related tools: json-minifier
- Related articles: none

#### Leap Year Checker

- URL: https://www.aigclub.com/en/tools/leap-year-checker/
- Category: date-time-tools
- Direct answer: A Gregorian leap year is divisible by 400, or divisible by 4 but not by 100. Leap years have 366 days and February has 29 days; common years have 365 days and February has 28 days.
- Related tools: day-of-year-calculator
- Related articles: none

#### List Randomizer

- URL: https://www.aigclub.com/en/tools/list-randomizer/
- Category: text-tools
- Direct answer: List Randomizer treats each line as one list item and shuffles the order locally with browser randomness. It is useful for everyday ordering, practice sets, draft rotations, and test sample shuffling; it is not appropriate for regulated lotteries, prize drawings, security decisions, or any workflow that needs auditable randomness.
- Related tools: none
- Related articles: none

#### Markdown Table Generator

- URL: https://www.aigclub.com/en/tools/markdown-table-generator/
- Category: developer-tools
- Direct answer: The Markdown Table Generator converts delimited text into a GitHub-flavored Markdown table, pads short rows, builds the separator row, and escapes cell pipes as \|. The first row can become the header, or the tool can generate Column 1 style headers. Alignment is expressed with ---, :---, :---:, or ---: markers.
- Related tools: csv-to-json-converter, json-to-csv-converter, regex-tester
- Related articles: none

#### Password Strength Checker

- URL: https://www.aigclub.com/en/tools/password-strength-checker/
- Category: security-privacy
- Direct answer: Password Strength Checker scores length and character variety, then deducts points for common passwords, repeated characters, simple sequences, and single-character-class values. It is a browser-local estimate, not proof that a password is secure, unique, or absent from breach data.
- Related tools: none
- Related articles: none

#### Query String Parser

- URL: https://www.aigclub.com/en/tools/query-string-parser/
- Category: developer-tools
- Direct answer: The Query String Parser reads the part after ?, splits key-value pairs on &, decodes percent encoding and plus-as-space query syntax, and preserves repeated keys in order. Repeated keys are not overwritten; grouped JSON stores them as arrays.
- Related tools: json-to-csv-converter
- Related articles: repeated-query-parameters-guide, query-string-vs-url-encoding-guide

#### Regex Tester

- URL: https://www.aigclub.com/en/tools/regex-tester/
- Category: developer-tools
- Direct answer: The Regex Tester uses browser JavaScript RegExp semantics. It supports g, i, m, s, u, and y flags, shows up to 100 matches, lists capture groups, and previews JavaScript replacement output. Use it for text extraction, log filters, and frontend validation drafts, not as a substitute for code review, performance testing, or another language's regex engine.
- Related tools: text-diff-checker, url-parser, cron-expression-parser
- Related articles: regex-tester-guide, catastrophic-backtracking-regex-guide

#### Robots.txt Tester

- URL: https://www.aigclub.com/en/tools/robots-txt-tester/
- Category: seo-marketing
- Direct answer: Paste the proposed file, enter an exact crawler product token such as Googlebot, and test a path or complete HTTP URL. The result covers the pasted access rules only: it does not fetch the live file, interpret Sitemap or Crawl-delay, reproduce every crawler extension, or prove crawling or indexing.
- Related tools: none
- Related articles: robots-txt-check-before-publish, sitemap-url-extraction-guide

#### Text Diff Checker

- URL: https://www.aigclub.com/en/tools/text-diff-checker/
- Category: text-tools
- Direct answer: Text Diff Checker shows added, removed, and unchanged lines or words between two pasted text snippets. It is useful for copy, FAQ, config snippets, emails, and release-note drafts, with browser-local processing and manual review.
- Related tools: none
- Related articles: none

#### Text Reverser

- URL: https://www.aigclub.com/en/tools/text-reverser/
- Category: text-tools
- Direct answer: Text Reverser reverses pasted text locally by lines, words, or characters. Line reversal changes the order of lines, word reversal changes the order of non-whitespace word chunks while preserving separators, and character reversal uses browser grapheme segmentation when available so emoji and combining marks are handled more safely than simple byte reversal.
- Related tools: none
- Related articles: none

#### TOML Formatter

- URL: https://www.aigclub.com/en/tools/toml-formatter/
- Category: developer-tools
- Direct answer: TOML Formatter cleans common TOML layout issues and reports obvious syntax boundaries such as unclosed quotes, arrays, tables, or missing key-value separators. It is useful for reviewing readable config snippets, but it does not prove that Cargo, Python, Hugo, Taplo, or any other tool will accept every schema-specific field.
- Related tools: yaml-formatter, xml-formatter
- Related articles: none

#### URL Parser

- URL: https://www.aigclub.com/en/tools/url-parser/
- Category: developer-tools
- Direct answer: The URL Parser uses standard URL syntax to split scheme, origin, username, password, host, hostname, port, path, query string, fragment, and query parameters. It is useful for debugging link structure, but it does not send network requests, verify that a page exists, or decide whether a domain is trustworthy.
- Related tools: query-string-parser
- Related articles: url-parser-vs-query-string-parser, safe-url-inspection-boundaries

#### Working Hours Calculator

- URL: https://www.aigclub.com/en/tools/working-hours-calculator/
- Category: date-time-tools
- Direct answer: A working hours calculator subtracts start time from end time, deducts break minutes, and returns gross minutes, net working minutes, decimal hours, and an hours-minutes breakdown. Overnight shifts must be enabled explicitly, and the result is a calculation aid, not labor-law or payroll guidance.
- Related tools: none
- Related articles: none

#### XML Formatter

- URL: https://www.aigclub.com/en/tools/xml-formatter/
- Category: developer-tools
- Direct answer: XML Formatter checks whether the input is well-formed before producing a two-space indented result. XML minifying removes layout whitespace between tags. It does not validate DTD, XML Schema, namespace semantics, or API-specific rules, so important XML should still be reviewed against the target system.
- Related tools: json-minifier
- Related articles: xml-format-vs-minify-guide

#### YAML Formatter

- URL: https://www.aigclub.com/en/tools/yaml-formatter/
- Category: developer-tools
- Direct answer: YAML Formatter parses the input first, then prints a two-space indented YAML result or a validation summary. It is useful for reviewing configs, front matter, and workflow files, but it does not verify application-specific schema, secrets, deployment safety, or vendor rules.
- Related tools: xml-formatter, json-minifier
- Related articles: none

### Articles

#### Browser-local Image Processing: Privacy Boundary and Test

- URL: https://www.aigclub.com/en/articles/browser-local-image-privacy-guide/
- Category: image-tools
- Direct answer: The AIGClub image handlers read a selected file through a browser object URL, decode it into an Image, draw to Canvas, create a Blob, and attach that Blob to a download link. They contain no application request that uploads the selected image. The page can still request analytics, monitoring, advertising, fonts, or other resources, and browser extensions or device software can act outside the handler. Use a trusted environment, test with a synthetic image, inspect network requests, verify the download, and never treat local processing as absolute privacy.
- Related tools: image-cropper, image-resizer, image-format-converter
- Related articles: crop-vs-resize-guide, jpeg-png-webp-format-guide

#### How to Avoid Catastrophic Regex Backtracking

- URL: https://www.aigclub.com/en/articles/catastrophic-backtracking-regex-guide/
- Category: developer-tools
- Direct answer: Avoid nested or overlapping repetition such as (a+)+$ when untrusted input can grow. Replace ambiguous repetition with a narrower token rule or a small parser, anchor the intended field, cap input length and runtime, and test increasingly long non-matches in the exact production engine. A static warning is only a heuristic.
- Related tools: regex-tester
- Related articles: regex-tester-guide

#### Five-Field Cron vs Quartz Cron

- URL: https://www.aigclub.com/en/articles/cron-five-field-vs-quartz-guide/
- Category: developer-tools
- Direct answer: Five-field Unix cron is minute hour day-of-month month day-of-week. Quartz commonly adds seconds first, may add a year last, and defines characters such as ?, L, W, and #. A parser must reject the wrong dialect rather than shift fields silently; AIGClub accepts only the documented five-field subset and common macros.
- Related tools: cron-expression-parser, date-format-converter
- Related articles: cron-schedule-debugging-checklist

#### Cron Job Debugging Checklist

- URL: https://www.aigclub.com/en/articles/cron-schedule-debugging-checklist/
- Category: developer-tools
- Direct answer: To debug cron, first confirm the target scheduler dialect and field count, then preview future run times. Next check timezone, day-of-month versus weekday rules, deployment environment, job permissions, recent execution logs, and failed responses. A browser-local parser can check the expression, but it cannot prove production execution.
- Related tools: cron-expression-parser, http-status-code-reference
- Related articles: cron-five-field-vs-quartz-guide

#### Crop an Image to a Square with Exact Coordinates

- URL: https://www.aigclub.com/en/articles/crop-image-to-square-guide/
- Category: image-tools
- Direct answer: Set the square side to the smaller source dimension. For a geometric center, put half of the long-side difference before the crop. A 2400 × 1600 landscape therefore uses side 1600, X = (2400 − 1600) ÷ 2 = 400, and Y = 0. Move X or Y when the subject is not centered, then verify the downloaded square in the actual destination.
- Related tools: image-cropper, image-resizer
- Related articles: crop-vs-resize-guide, image-file-size-dimensions-guide

#### Crop, Resize, or Convert: Choose the Image Operation

- URL: https://www.aigclub.com/en/articles/crop-vs-resize-guide/
- Category: image-tools
- Direct answer: Crop to remove edges or change composition and aspect ratio. Resize to change the pixel grid while normally retaining the chosen composition. Convert to request another encoding without changing the grid. When a destination specifies both shape and dimensions, crop first, resize second, and encode for the destination last; keep the source and avoid unnecessary lossy exports.
- Related tools: image-cropper, image-resizer, image-format-converter
- Related articles: crop-image-to-square-guide, image-file-size-dimensions-guide, jpeg-png-webp-format-guide

#### How to Convert CSV to JSON Safely

- URL: https://www.aigclub.com/en/articles/csv-to-json-converter-guide/
- Category: developer-tools
- Direct answer: To convert CSV to JSON, use the first row as headers, parse each following row into an object, keep values as strings unless your target schema says otherwise, and review row counts, headers, delimiters, and quoted fields before importing.
- Related tools: csv-to-json-converter
- Related articles: none

#### How to Read HTTP Status Codes During API Debugging

- URL: https://www.aigclub.com/en/articles/http-status-code-reference-guide/
- Category: developer-tools
- Direct answer: Read HTTP status codes by first identifying the class: 2xx means the protocol request succeeded, 3xx means redirect or cache behavior, 4xx usually means the request cannot be accepted as sent, and 5xx usually means the server or upstream failed. Then confirm with method, URL, headers, response body, and logs.
- Related tools: http-status-code-reference, url-parser
- Related articles: url-parser-vs-query-string-parser

#### Image Pixel Dimensions and File Size Are Different

- URL: https://www.aigclub.com/en/articles/image-file-size-dimensions-guide/
- Category: image-tools
- Direct answer: A 2400 × 1600 image contains 3,840,000 pixels. Resizing it proportionally to 1200 × 800 produces 960,000 pixels, one quarter as many, but the downloaded bytes will not necessarily be exactly one quarter. Format, image detail, transparency, encoder, and quality settings change the result. Choose sufficient dimensions first, then measure actual files at acceptable visual quality.
- Related tools: image-resizer, image-format-converter
- Related articles: crop-vs-resize-guide, jpeg-png-webp-format-guide

#### Choose JPEG, PNG, or WebP by Requirement

- URL: https://www.aigclub.com/en/articles/jpeg-png-webp-format-guide/
- Category: image-tools
- Direct answer: Choose JPEG for a photographic delivery path that accepts lossy output and does not require alpha. Choose PNG when transparency or sharp graphics matter and its measured size is acceptable. Test WebP when the recipient accepts it and its actual result is useful. In every case, verify the returned MIME, dimensions, background or transparency, visible artifacts, bytes, and destination acceptance; no format is guaranteed smallest or universally encodable here.
- Related tools: image-format-converter, image-resizer
- Related articles: image-file-size-dimensions-guide, browser-local-image-privacy-guide

#### When Should You Minify JSON in an API Request Body?

- URL: https://www.aigclub.com/en/articles/json-minifier-api-request-body-guide/
- Category: developer-tools
- Direct answer: Minify JSON for an API request body when you need compact text for a one-line field, command, or example. Keep a formatted copy when debugging. Always validate the JSON first and review fields, types, signing rules, and sensitive data against the target API documentation.
- Related tools: json-minifier
- Related articles: json-minify-vs-format-guide

#### Why a JSON Minifier Should Validate First

- URL: https://www.aigclub.com/en/articles/json-minifier-validation-errors-guide/
- Category: developer-tools
- Direct answer: A JSON minifier should validate first because only valid JSON can be safely compacted. Common errors include single quotes, unquoted keys, trailing commas, comments, mismatched brackets, unescaped line breaks inside strings, and copied text that is missing the beginning or end.
- Related tools: json-minifier
- Related articles: json-minify-vs-format-guide, json-minifier-api-request-body-guide

#### JSON Minify vs Format: What Is the Difference?

- URL: https://www.aigclub.com/en/articles/json-minify-vs-format-guide/
- Category: developer-tools
- Direct answer: JSON minifying produces compact serialized JSON; formatting produces indented serialized JSON. Both parse before serializing here, so they can change duplicate keys, large numbers, negative zero, numeric spelling, and integer-like key order. Neither preserves exact bytes or replaces schema, privacy, or security review.
- Related tools: json-minifier
- Related articles: json-minifier-api-request-body-guide, json-minifier-validation-errors-guide

#### Query String Parsing vs URL Encoding

- URL: https://www.aigclub.com/en/articles/query-string-vs-url-encoding-guide/
- Category: developer-tools
- Direct answer: Query String parsing splits the part after ? into parameters. URL encoding turns spaces, non-ASCII text, and special characters into percent-encoded sequences. Parsing does not prove a link is valid, and encoding is not encryption. Debugging usually starts with structure, then checks encoding for individual values.
- Related tools: query-string-parser
- Related articles: repeated-query-parameters-guide, url-parser-vs-query-string-parser

#### How to Test a Regular Expression

- URL: https://www.aigclub.com/en/articles/regex-tester-guide/
- Category: developer-tools
- Direct answer: For browser JavaScript RegExp, test a pattern against matched, unmatched, empty, Unicode, and length-boundary samples. This interface accepts gimsuy, preserves literal spaces at both ends of the pattern, collects matches globally for preview, and caps output at 100 rows. Recheck the final expression in its deployment engine.
- Related tools: regex-tester
- Related articles: catastrophic-backtracking-regex-guide

#### How to Handle Repeated Query Parameters

- URL: https://www.aigclub.com/en/articles/repeated-query-parameters-guide/
- Category: developer-tools
- Direct answer: When a Query String repeats a key, debugging should preserve every value and its order first. Do not assume the last value wins; the target system may take the first value, take the last value, merge an array, or treat repeats as invalid.
- Related tools: query-string-parser, json-to-csv-converter
- Related articles: query-string-vs-url-encoding-guide

#### Build a Robots.txt Path Matrix Before Publishing

- URL: https://www.aigclub.com/en/articles/robots-txt-check-before-publish/
- Category: seo-marketing-tools
- Direct answer: Before publishing, test an exact named product token, the wildcard fallback, a public path, an intentionally blocked path, a longer Allow exception, and a query-sensitive pattern. Treat Sitemap and crawler-specific directives as separate checks. After deployment, fetch the live file and compare its HTTP response and content with the reviewed draft; a local Allowed result is not index evidence.
- Related tools: robots-txt-tester
- Related articles: sitemap-url-extraction-guide, search-snippet-preview-limitations

#### Checklist Before Publishing Minified HTML

- URL: https://www.aigclub.com/en/articles/safe-html-before-publish-checklist/
- Category: developer-tools
- Direct answer: Before publishing, check five things: visible copy is not joined incorrectly, script/style/pre/textarea content still works, template placeholders are intact, required comments are preserved, and neither input nor output contains sensitive information. Then preview or test in the target environment.
- Related tools: html-minifier
- Related articles: script-style-minification-limits

#### How to Inspect URL Structure Without Opening a Link

- URL: https://www.aigclub.com/en/articles/safe-url-inspection-boundaries/
- Category: developer-tools
- Direct answer: To inspect a URL without opening it, paste the complete URL into a local parser and review scheme, host, path, query parameters, fragment, and any username or password fields. This helps you understand structure, but it does not decide whether the link is malicious, the domain is trustworthy, or the page content is safe.
- Related tools: url-parser, query-string-parser
- Related articles: url-parser-vs-query-string-parser, query-string-vs-url-encoding-guide

#### Why HTML Minifying Should Not Rewrite script and style

- URL: https://www.aigclub.com/en/articles/script-style-minification-limits/
- Category: developer-tools
- Direct answer: An HTML Minifier should focus on markup, not replace JavaScript or CSS minifiers. script and style blocks can contain strings, regexes, selectors, comments, source map markers, or build conventions that need language-aware tooling.
- Related tools: html-minifier
- Related articles: safe-html-before-publish-checklist

#### Why Search Results Can Differ From a Meta Preview

- URL: https://www.aigclub.com/en/articles/search-snippet-preview-limitations/
- Category: seo-marketing-tools
- Direct answer: Search results can differ from a meta preview because search platforms may choose or rewrite snippets based on the query, page body, device width, language, structured data, and platform-specific rules. Treat the preview as a draft review surface, not a guarantee of the final result.
- Related tools: none
- Related articles: robots-txt-check-before-publish

#### How to Extract URLs From a Sitemap

- URL: https://www.aigclub.com/en/articles/sitemap-url-extraction-guide/
- Category: seo-marketing-tools
- Direct answer: To extract sitemap URLs, paste the sitemap XML or sitemap index text into the extractor, parse each loc value, and review the deduplicated list. Then check production domains, important paths, count changes, and accidental preview URLs. Extracting loc text does not fetch, submit, crawl, or index the URLs.
- Related tools: none
- Related articles: robots-txt-check-before-publish

#### URL Parser vs Query String Parser

- URL: https://www.aigclub.com/en/articles/url-parser-vs-query-string-parser/
- Category: developer-tools
- Direct answer: Use a URL Parser to inspect a complete URL's scheme, host, path, query string, and fragment. Use a Query String Parser to focus on key-value pairs, blanks, repeated keys, and grouped JSON after ?. Start with the URL Parser when the full link may be wrong; use the Query String Parser when the parameter area is the only concern.
- Related tools: url-parser, query-string-parser
- Related articles: query-string-vs-url-encoding-guide

#### XML Format vs Minify: What Is the Difference?

- URL: https://www.aigclub.com/en/articles/xml-format-vs-minify-guide/
- Category: developer-tools
- Direct answer: XML formatting adds line breaks and indentation so tag hierarchy is easier to read. XML minifying removes layout whitespace between tags. Both operations require well-formed XML and do not validate DTD, XSD, namespace semantics, or business-field rules.
- Related tools: xml-formatter
- Related articles: none

## Global Safety Notes

- Base64, URL encoding, and HTML entities are encodings, not encryption.
- Browser-local processing does not make sensitive input absolutely safe.
- Date, calculator, converter, commerce, SEO, and security outputs are drafts or references and must be reviewed before important use.
- No planned locale URL should be treated as published until its locale is active.

Last updated: 2026-07-15