Convert WebP to AVIF
Turn WebP images from the web into AVIF files, the smallest modern format.
Runs on your device. Your files are never stored.
Short answer
To convert WebP to AVIF, add your files to FileFleet, adjust the quality if you like, and download the AVIF files, zipped if there are several. It runs in your browser, so nothing is uploaded. In our test, a 2400 × 1350 photo went from 249 KB to 11 KB as AVIF.
- Price
- Free
- Account
- None needed
- Your files
- Never stored
- Limits
- No daily limit, no watermark
- You get
- AVIF images, zipped if there are several
- Works on
- Phones and computers
WebP vs AVIF
Both are modern web formats, and AVIF usually trims a good share more off the file size. If your WebP is animated, this converter saves its first frame as a still image.
| Feature | WebP | AVIF |
|---|---|---|
| Full name | WebP, developed by Google | AV1 Image File Format |
| Introduced | 2010 | 2019 |
| Compression | Lossy or lossless | Lossy or lossless |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Best for | Images on websites, where small files load faster | The smallest files for websites |
| Opens in | All current browsers; some older apps and upload forms reject it | Current Chrome, Firefox, Edge and Safari; many apps can’t open it yet |
What happens to file size
| Test image | WebP | AVIF | Change |
|---|---|---|---|
| A 2400 × 1350 photo | 249 KB | 11 KB | 22× smaller |
| A 1440 × 860 website screenshot | 48 KB | 25 KB | -48% |
About the two formats
WebP
WebP was built to make web images smaller than JPG and PNG at the same quality. Websites use it widely, which is why images you save from the web are often WebP.
AVIF
AVIF uses compression from the AV1 video codec and usually makes the smallest image files of any common format. Browser support is broad, but desktop apps are still catching up.
How to convert WebP to AVIF
- 1Add your WebP files.
- 2Adjust the quality if you like.
- 3Download the AVIF files.
Questions
Do my files get uploaded?
No. WebP to AVIF runs entirely in your browser, so your files never leave your device. Close the tab and they're gone.
Is it really free?
Yes. No account, no daily limits and no watermark on your files.
What happens to an animated WebP?
The first frame becomes a still AVIF image.