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Image Converter

Convert JPG, PNG, WEBP, AVIF, BMP, GIF and ICO in bulk.

Free, no uploads, no sign-up. Runs 100% in your browser.

How Image Converter works

Image Converter runs entirely in your browser. Convert JPG, PNG, WEBP, AVIF, BMP, GIF and ICO in bulk. Under the hood it uses Canvas 2D (the browser’s hardware-accelerated 2D drawing surface). Your files are read into this tab’s memory, processed on your own CPU, and handed back to you as a download. Nothing is sent to a server.

Input: JPG, PNG, WEBP, GIF, BMP. Output: JPG, PNG, WEBP, AVIF, BMP, GIF, ICO.

How to use Image Converter

1. Drop one or more images onto Image Converter.
2. Tune the options. The before/after preview updates live.
3. Process the batch.
4. Download a single image, or everything as a ZIP.

Tips

• AVIF encoding depends on browser support; WebP works everywhere modern.
• Converting to JPG flattens transparency onto a background color.

Image Converter FAQ

Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

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