Batch
Batch convert images
Convert many images between JPG, PNG and WebP in your browser — mixed formats welcome, failures isolated, ZIP download.
No upload. No account. Nothing stored.
Drop images here
or
Mixed JPEG, PNG, WebP, AVIF and GIF files. Processed in your browser — nothing is uploaded.
How it works
Convert a whole set of images to JPEG, PNG or WebP in one go. If any image is transparent and you choose JPEG, Image asks once which colour transparent areas should become.
Add as many images as you like — mixed JPEG, PNG, WebP, AVIF and GIF are fine. They're processed in order, one or two at a time (one at a time when any image is over 12 megapixels) so your browser stays responsive and doesn't run out of memory. Files aren't decoded until their turn.
The progress panel shows the current file, how many are done or failed, and the total size before and after. A file that fails — corrupted, unsupported or too large — gets its own message and the rest carry on. Cancel stops immediately; anything already finished stays available.
Download files one by one, or prepare a single image-littleormore-processed.zip built in your browser. Nothing is uploaded at any point.
Worked example
A folder of 12 PNG screenshots and 8 JPEG photos converted to WebP at quality 85 typically shrinks by 30–60% overall, keeps the screenshots' transparency, and downloads as one ZIP with names like screenshot.webp.
Edge cases handled
- Mixed inputs, one output format.
- Transparent → JPEG asks for a background once for the whole batch.
- AVIF output appears only if the browser can encode it.
- Files already in the target format are re-encoded and named “-converted”.
- Unsupported files (HEIC, SVG, RAW) are listed with the reason.