AVIF to WebP Converter
Drop your AVIF images into the box below and get WebP files back in seconds. No install, no account, and your images never leave your device.
🔒 Your images are never collected. Everything runs locally in your browser and leaves no trace once the page is closed.
AVIF is built on the AV1 codec and is currently the best compressing mainstream format — roughly 20–50% smaller than WebP at matching quality. WebP is Google's modern web format: typically 25–35% smaller than JPG at the same visual quality, far smaller than PNG, and it still supports transparency.
Moving AVIF to WebP normally cuts the file size by 25–35% with no visible difference — the single easiest win for page speed. The big AVIF files in your pipeline are exactly the ones worth converting first.
How to convert AVIF to WebP
- Drop your AVIF files into the box above
Or click the box to browse. You can select many files at once — the whole batch is converted for you. - Check that the output format is WebP
This page preselects WebP. Use the Output format menu if you want something else. - Adjust the settings if you need to
Lower the quality for smaller files, raise it for maximum fidelity. Set Max width or Max height to resize; leave both empty to keep the original dimensions. Changes re-convert automatically. - Download the results
Use Download on any single file, or Download all (.zip) to grab the whole batch in one archive.
Good to know
Why convert AVIF to WebP
On the web, image weight is loading time. Moving AVIF to WebP usually saves about a third of the bytes on the same picture: the first screen paints sooner and mobile visitors burn less data. The image-heavy the site, the bigger the difference.
When WebP is the right choice
Website images, app assets, and anything where page speed matters. Reach for something else when: a few older desktop apps still cannot open it; not always accepted by print workflows.
What changes after conversion
Changes to expect: the extension becomes .webp; camera metadata is stripped; the file usually gets smaller.
Practical tips
- Quality 75–85 is the sweet spot: no visible difference, smallest file. 80 is a good default for website images.
- Camera metadata (timestamp, GPS position) is stripped during conversion — smaller files, and less to leak.
- Want it smaller still? Set Max width to 1.5–2× the size you actually display, and most web images lose more than half their weight.
Specifications
| Input format | AVIF |
|---|---|
| Output format | WebP |
| Uploaded to a server | Never — the conversion runs locally in your browser |
| Batch conversion | Yes, select as many files as you like |
| File size limit | None (bounded by device memory; oversized images are scaled down) |
| Transparency | Supported |
| Animation | First frame only |
| Output dimensions | Configurable; original size by default |
| Browsers | Chrome, Edge, Safari, Firefox and mobile browsers |
| Price | Free, no account required |
Frequently asked questions
Do I have to upload my images?
No. The conversion runs entirely inside your browser, so your files never leave the device — which means contracts, ID scans and client material are all fine to process here. You can even disconnect from the network first; the tool keeps working.
Does converting AVIF to WebP reduce quality?
At the default quality of 82 nearly every image looks identical while getting substantially smaller. For archival copies, push quality past 90 and the difference becomes negligible.
Can I convert in bulk? Is there a file size limit?
Yes, and effectively no. Because nothing is uploaded there is no server-side size cap — drop in as many files as you like. The only limit is your own memory; images above 120 megapixels are scaled down automatically.
Does it work on a phone?
Yes. Open this page in your mobile browser and tapping the box takes you straight to your photo library. Both iOS and Android work; batch size is limited mainly by how much memory your phone has.
The AVIF file will not open or convert. What now?
AVIF needs a recent browser to decode. Update Chrome, Edge, or Safari 16.4 or newer and try again — or simply run the conversion in Safari.