Convert WebP to AVIF
We turn WebP into AVIF right in your browser — the file never goes to a server.
What you will lose
Nothing important: the target format does everything the source does.
How they differ
| WebP | AVIF | |
|---|---|---|
| Lossless | yes | yes |
| Lossy | yes | yes |
| Transparency | yes | yes |
| Animation | yes | yes |
| Released | 2010 | 2019 |
| Author | Alliance for Open Media |
WebP
Good at
- 25–35 % lighter than JPEG at comparable quality
- One format instead of three: lossy and lossless, transparency, animation
- Supported by every browser released after 2020
Awkward about
- Older software and devices will not open it
- Some editors still cannot save to it
Use it when
- Images for the web — the main case
- Replacing JPEG, PNG and GIF with a single format
AVIF
Good at
- Compresses tighter than WebP — usually another 20–30 %
- Handles 10 bits per channel and high dynamic range
- Transparency and animation are both there
Awkward about
- Noticeably slower to encode than the others
- Support outside browsers is still thin
- On small images it sometimes loses to WebP on size
Use it when
- Large images on a site where weight matters
- When you have a fallback for older browsers
Common questions
- Does the file get uploaded to a server?
- Yes, this pair needs the server: browsers cannot encode that format. The file and the result are deleted within a couple of hours and never shared.
- Will transparency survive?
- Yes, AVIF supports transparency, so semi-transparent edges stay as they were.
- Can I get the original quality back afterwards?
- Yes, AVIF supports lossless compression, so you can go back to the original.
- How many files, and how large?
- Up to 30 files at a time, 50 MB each. No sign-up, no watermarks.