All tools · Batch Converter
Batch Converter
Convert a whole folder to WebP, AVIF or optimised PNG at the quality you choose. Per-file or one ZIP, nothing uploaded.
Open Batch Converter →Free. No account needed.
- WebP, AVIF and lossless-optimised PNG, encoded in your browser with the Squoosh WebAssembly codecs
- One quality dial per batch, with the size saving shown live on every finished file
- Mix formats across drops: the format and quality lock in per image the moment you add it
- Download any single result or the whole batch as one ZIP, with no uploads and no per-image fees
Runs entirely in your browser. Your files never leave your machine.
See it in action
- Pick a format and quality
- Drop your images
- Download each file, or the batch as a ZIP
- Takes
- Browser-readable images, one or a batch.
- Gives
- WebP, AVIF or lossless-optimised PNG, single files or a ZIP. Encoded in your browser, nothing uploaded.
Batch Converter, answered
- Which formats does the Batch Converter output?
- WebP, AVIF and lossless-optimised PNG, encoded in your browser with the Squoosh WebAssembly codecs. Download files one at a time or as one ZIP.
- How do I choose the quality?
- One quality dial per batch. The size saving is shown live on every finished file so you can see what a setting costs before you commit to it.
- Can I mix formats in one batch?
- Yes. The format and quality lock in per image the moment you add it, so you can change the setting between drops.
- Are images uploaded to convert them?
- No. Everything runs inside your browser tab on your own machine. Nothing is uploaded and there is no server to send it to, so nothing is stored anywhere but your device.
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Notes from the workbench
All comments ↗Used Batch Converter for something? Share what worked, or suggest one thing that would make it easier. Your note could help shape the next improvement.