WebP to AVIF Converter
Convert WebP images to AVIF — free, private, no upload required.
Drop your WebP image here or click to upload
Your files never leave your device. All conversion happens locally in your browser.
WebP is already efficient, but AVIF usually goes further, cutting another 20–50% off the file size. If you are chasing the last few kilobytes for performance, AVIF is the next step.
This free converter changes WebP to AVIF locally in your browser — no upload, no signup.
Why convert WebP to AVIF?
Converting WebP to AVIF squeezes even more size out of web images while keeping quality and transparency, helping you hit tough performance budgets.
When should you convert WebP to AVIF?
- You already use WebP and want maximum compression.
- You are optimising images for a performance-critical site.
- You can provide a WebP fallback for older browsers.
How to convert WebP to AVIF
- Add your WebP file – drag it onto the page or click to select it from your device.
- Choose AVIF – AVIF is pre-selected as the output format.
- Adjust the quality – move the quality slider for a smaller file or maximum detail.
- Convert and download – click convert and save your new AVIF file. Everything happens locally in your browser.
Conversion runs entirely on your device; nothing is uploaded to a server.
WebP vs AVIF at a glance
| Feature | WebP | AVIF |
|---|---|---|
| Compression | Lossy and lossless | Lossy and lossless (AV1) |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| File size | Very small | Very small |
| Compatibility | All modern browsers | Modern browsers |
| Best for | Websites and apps | Next-gen web images |
Tips for converting WebP to AVIF
Compare before/after
Check the size difference — AVIF often wins by a meaningful margin.
Keep the WebP as fallback
Serve WebP to browsers that cannot decode AVIF.
Mind the quality slider
AVIF looks good at moderate quality, so you can compress more.
Frequently asked questions
Is WebP to AVIF conversion free?
Yes, completely free and unlimited.
Are my files uploaded?
No. Conversion happens in your browser.
Is AVIF smaller than WebP?
Usually yes, often by 20–50% at similar quality.
Which browsers can create AVIF?
Current Chrome and Edge support AVIF encoding.
Related guides
Convert WebP to AVIF now
Go one step smaller with AVIF — free and in your browser.
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