Convert AVIF to WebP
Convert images to WebP automatically in your browser. Select several files at once — free, with no uploads or sign-up.
100% local browser processing · zero image upload
What is an AVIF to WebP converter?
An AVIF to WebP converter decodes an AVIF image and re-encodes it as WebP, the format Chrome, Safari, Firefox and Edge have all supported for years. Transparency survives, the pixel dimensions do not change, and the result is a file that image editors, CMS upload fields and design tools accept far more often than AVIF.
The output is usually a little larger than the AVIF it came from, because AVIF compresses harder. That is the point of converting: you are trading a few kilobytes for compatibility. WebP still beats JPEG and PNG comfortably on size, so it remains a good format for a live web page.
Everything happens locally in the browser. The AVIF is decoded, drawn to a canvas and encoded as WebP at quality 80 — the same setting the other conversion pages use — so the file is never uploaded and there is no sign-up or watermark.
If the file has to open in a desktop application or a print workflow, the AVIF to JPG converter is the safer target. If it is going straight into an editor and needs to stay pixel-exact, use the AVIF to PNG converter. To cut the size further without changing formats, run the result through the image compressor.
How to convert AVIF to WebP
- Drop your .avif files onto the upload area, or click it to browse. Multiple files convert in one run.
- Check the queue: each row shows the file name, the original size and the output format, WebP.
- Conversion starts automatically after you select your images.
- Download an image and open it to inspect the result, including any transparent areas.
- Look at the size column. The WebP is normally slightly larger than the AVIF; if it is dramatically larger, the source was probably a small thumbnail and the image compressor will do better.
- Download the WebP files one at a time or use Download all for the whole batch.
AVIF to WebP examples
Four conversions you can reproduce with the tool above. WebP is always written at quality 80, so the sizes below are typical results rather than exact guarantees.
Hero image for a CMS
hero.avif — 120 KB, 2000×1333
hero.webp — 165 KB, uploads without complaint
Logo with transparency
mark.avif — 18 KB, 512×512, transparent background
mark.webp — 26 KB, alpha intact
Product photo
product.avif — 260 KB, 1200×1200
product.webp — 340 KB, ready for a product page
Already-compressed thumbnail
thumb.avif — 24 KB, 600×400
thumb.webp — 41 KB, larger than the source — compress instead of converting
WebP vs AVIF
| Dimension | WebP | AVIF |
|---|---|---|
| File size at equal quality | Slightly larger | Smallest of the modern formats |
| Browser support | All current browsers, since 2020 | Current browsers, from Chrome 85 and Safari 16 |
| Software support | Most editors and CMS platforms | Newer editors only |
| Transparency | Supported | Supported |
| Animation | Supported | Supported |
| Encoding speed | Fast | Slow |
| Best for | Web delivery today | Web delivery where size is the priority |
Frequently asked questions
How do I convert an AVIF file to WebP?
Drop the .avif files onto the upload area above and press Convert. Each file is decoded and written as WebP at quality 80, and you can download the results individually or all at once.
Is WebP smaller than AVIF?
Usually not. AVIF is the more efficient codec, so the WebP is typically a little larger. You convert for compatibility: WebP opens in more editors, CMS upload fields and design tools than AVIF does.
Does WebP keep transparency?
Yes. The alpha channel is preserved, so transparent logos and cut-outs stay transparent — unlike a JPG conversion, which flattens them onto white.
Why does my CMS reject AVIF but accept WebP?
AVIF support was added to most platforms later, and some upload validators still keep a short list of allowed types. WebP has been on those lists since around 2020, so converting is often the quickest fix.
Can I convert several AVIF files at once?
Yes. The upload area accepts multiple files and the queue converts them in a single run, so a folder of AVIF images becomes WebP in one batch.
Is this AVIF to WebP converter free?
It is free. There is no sign-up, no watermark and no limit on how many files you convert in a session.
Are my images uploaded?
No. Conversion happens in your browser with the Canvas API, so the images never leave your device. It also keeps working offline once the page has loaded.
AVIF to WebP Tips
- WebP keeps transparency and is read by every current browser.
- Handy when a CMS or editor rejects AVIF but accepts WebP.
- Expect the WebP to be slightly larger than the AVIF it came from.