UnlimitedConvert
WebP to AVIF Converter
Turn WebP files into AVIF in seconds. Everything happens on your device: nothing is uploaded, and there's no limit.
Your images are processed in this browser tab and never uploaded.
Why convert WebP to AVIF?
Many apps, print services and older programs still don't accept WebP.
AVIF gives the smallest files of any image format, ideal for fast websites.
What to expect
- AVIF encoding takes a few seconds per large photo because it compresses much harder than other formats.
How to convert WebP to AVIF
Add your files
Drop your WebP files into the box or tap “select files”. Add as many as you like.
Pick the options
Set the quality. AVIF stays sharp even at 60–75%, with very small files.
Convert and download
Press Convert. Download each AVIF on its own, or everything at once as a ZIP file.
WebP vs AVIF
| WebP | AVIF | |
|---|---|---|
| Full name | WebP | AV1 Image File Format |
| Compression | Lossy | Lossy |
| Transparency | Yes | Yes |
| Animation | Yes | Yes |
| Best for | images on websites, where smaller files mean faster pages | the fastest-loading website images |
| Support | All current browsers show WebP. Some older desktop apps and print services still don't accept it. | Current Chrome, Edge, Firefox and Safari show AVIF. Many desktop apps and older devices don't yet. |
About the formats
WebP (WebP, 2010) is Google's modern web format. It makes files roughly 25–35% smaller than JPG or PNG at the same visual quality and supports both transparency and animation.
AVIF (AV1 Image File Format, 2019) is the newest major image format, based on the AV1 video codec. It usually produces the smallest files of all, often half the size of JPG, with transparency and HDR support.
Frequently asked questions
How do I convert WebP to AVIF?
Drop your WebP files into the box above (or tap Select files), check the options, then press Convert. Each AVIF downloads on its own, or you can download them all as one ZIP file.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser on your own device. Your WebP files are never sent to a server, so they stay private, and it works even on a slow connection once the page has loaded.
Is there a limit on how many WebP files I can convert?
No. Convert as many as you like, for free, without signing up. Very large batches are processed one after another so your browser stays responsive.
Will I lose quality converting to AVIF?
AVIF uses lossy compression, but at the default 90% quality the difference is practically invisible. Move the Quality slider up for the highest fidelity or down for smaller files.
Does it work on iPhone and Android?
Yes. It works in Safari, Chrome, Firefox and Edge on phones, tablets and computers. Nothing to install.