AVIF typically compresses a bit better than WebP, so converting WebP to AVIF can shave off extra kilobytes — useful when you’re optimising a site for speed and your audience uses modern browsers.
Everything runs locally in your browser, keeping your images private.
How to convert WebP to AVIF
- Drop your .webp files above.
- Set the quality level.
- Download your AVIF files (or a ZIP).
Is it worth converting WebP to AVIF?
If your visitors use current browsers, AVIF can be the smaller, faster option — often a further 10–20% lighter than the same image as WebP. If you only need one format and value the broadest compatibility, WebP is already a solid choice and you may not need to switch.
The modern fallback pattern
High-performance sites often serve AVIF first and fall back to WebP or JPG for older clients, using the HTML <picture> element. Converting your WebP assets to AVIF gives you that top-tier version to put first in the chain.
Quality and transparency
Use the quality slider to balance size and detail; 60–75 is a sensible range for photos. Transparency is preserved because AVIF supports an alpha channel, so transparent WebP graphics convert cleanly.
WebP vs AVIF at a glance
| WebP | AVIF | |
|---|---|---|
| File size | Small | Smaller |
| Transparency | Yes | Yes |
| Support | Wider (older) | Modern browsers |
| Best as | Fallback | Primary |
Frequently asked questions
Is AVIF smaller than WebP?
Often slightly smaller at the same quality, especially for photographic images.
Does it keep transparency?
Yes, AVIF supports transparency, so the alpha channel is preserved.
Should I replace WebP with AVIF everywhere?
Not necessarily — many sites keep WebP as a fallback and serve AVIF first to modern browsers for the best of both.
Will very old browsers show the AVIF?
Very old browsers may not. Keep a WebP or JPG fallback if you need to support them.
Are my files uploaded?
No — it all runs in your browser.
Can I batch convert?
Yes, convert several and download a ZIP.
Related: AVIF to WebP · JPG to AVIF · PNG to AVIF