Image Tools

Convert Image Pixels to PNG, JPEG, or WebP

Decode one browser-readable JPG, PNG, WebP, or GIF static bitmap and request a new PNG, JPEG, or WebP encoding without changing pixel dimensions.

Select an image, choose an output encoding, generate from the original selection, and download only when the returned Blob MIME matches that choice. The AIGClub handler performs this conversion with browser Canvas APIs.

Maintained by AIGClub Team

Browser-local image processing

Image Format Converter

● Processed by this browser

Choose an image

Output format

JPEG / WebP quality

Preview

Choose a JPG, PNG, WebP, or GIF that this browser can decode. Animation becomes the single static bitmap exposed by the browser. Source width and height must each be 1–16384 pixels.

How to use

Finish in three steps

01
Choose a file this browser can decode and verify that width and height are each between 1 and 16384 pixels.
02
Choose PNG, JPEG, or WebP. Use quality only as an encoding hint for JPEG or WebP; PNG disables that control.
03
Generate the output and verify actual MIME, unchanged pixel dimensions, background/transparency, visible artifacts, destination acceptance, and bytes before download.

Worked example: transparent PNG to JPEG

Select a 1200 × 800 PNG with transparent corners, choose JPEG, and generate. The summary should remain 1200 × 800 and report image/jpeg. This implementation paints white before drawing the source for JPEG; inspect every formerly transparent edge and compare text or logo detail at the destination.

A conversion changes encoding, not dimensions

The Canvas is created at the decoded source width and height. To change composition or scale, crop or resize first. A 2400 × 1600 input stays 2400 × 1600 here even when its MIME and encoded byte count change.

Every attempt uses the source selection

After a PNG, JPEG, or WebP result is shown, changing format or quality invalidates the old download and restores the source preview. The next generation redraws the independent source Image, preventing repeated lossy conversions or accidental alpha loss from becoming the new input.

MIME and browser capability check

Canvas may be unable to produce a requested format. The handler compares Blob.type with the selection and derives the extension from the matching Blob only. Browser versions, operating systems, encoders, memory, and receiving applications remain variables; no universal WebP or fixed-size promise is made.

Metadata, animation, color, and local scope

The tool makes no guarantee that EXIF, other metadata, ICC profiles, animation, or color interpretation will be removed or retained. Its handler uses object URLs, Image, Canvas, Blob, and a download link without an application upload call; that does not mean the entire page or device is offline or private.

FAQ

About this tool

Why did the tool reject a WebP request instead of downloading PNG?

The returned Blob MIME did not match image/webp. Rejecting the fallback prevents a PNG payload from receiving a .webp name.

Can converting to JPEG make transparent areas predictable?

This implementation fills the Canvas white before JPEG encoding, but you must still inspect antialiased edges and the final recipient rendering.

Does choosing quality 1 make JPEG lossless?

No. The value is a browser encoder hint and does not turn JPEG into a lossless workflow or guarantee original pixels.

Will converting the same source twice compound compression?

Not within one selection. Each Generate action redraws the original static source rather than the previously exported preview.