WebP to AVIF Converter
WebP is already efficient, so the question with WebP to AVIF is whether it is worth it for your images. Convert a batch here and see: each result shows the WebP size next to the AVIF size, or pick Smallest and keep whichever wins per image. Everything runs locally in your browser.
- Converted on your device, any browser
- Up to 100 MB
- No watermark, no signup
Last reviewed · How we verify claims
Drop images here
or click to browse — one or many (or a folder), up to 100.00 MB each · or paste
Compressed on your device. Nothing is uploaded, and metadata such as GPS location is removed.
How it works
- 1. Drop, paste or pick PNG, JPG, WebP, AVIF or GIF images, or a whole folder.
- 2. Pick AVIF, WebP, JPEG or Smallest, then a quality (50 to 60 suits most photos) or a size each file must fit under, and resize if needed.
- 3. Drag the divider to compare each image with its original, check the sizes, then download them one by one or as a ZIP. Nothing is uploaded.
Recommended settings
| Use case | Settings | Why |
|---|---|---|
| Site already serving WebP | Quality 55–65, heaviest images first | Convert where it pays off and keep the WebP when the AVIF isn't smaller. |
| Detailed textures | Quality 60–70 | AV1 keeps fine detail better than VP8 at the same size, but re-encoding needs headroom. |
| Thumbnails | Quality 40–50 | Small images tolerate lower quality, so the saving is larger. |
Use it on the web
<picture>
<source srcset="image.avif" type="image/avif">
<img src="image.webp" alt="Describe the image" width="1200" height="800" loading="lazy" decoding="async">
</picture>.hero {
background-image: url("image.webp");
background-image: image-set(url("image.avif") type("image/avif"), url("image.webp") type("image/webp"));
}JPG vs PNG vs WebP vs AVIF
| Format | Typical size | Colour | HTML tag | Support |
|---|---|---|---|---|
| JPG | Larger than WebP/AVIF for photos | Lossy, no alpha | <img> | Everywhere |
| PNG | Large for photos (lossless) | Lossless + alpha | <img> | Everywhere |
| WebP | Smaller than JPG | Lossy or lossless + alpha | <img> | All modern browsers |
| AVIF | Often smallest for photos | Lossy; alpha in the format, not written by this tool | <img> / <picture> | Current Chrome, Edge, Firefox, Safari |
Questions about WebP to AVIF Converter
- Is AVIF always smaller than WebP?
- No. AVIF often compresses photographs better, but not every image. That is why this tool shows both sizes: keep whichever file is smaller and looks right.
- Does an animated WebP convert?
- Only its first frame becomes a still AVIF. To make an animation, use the Animated AVIF Maker or GIF to AVIF.
- Will WebP transparency survive?
- Yes. Transparency is kept in the AVIF. Pick a colour under Transparent areas only if you want it filled.
- Are my images uploaded?
- No. Each image is decoded and encoded on your device, in background workers. Nothing is sent to a server, and re-encoding also removes metadata such as camera details and GPS location.
- Which browsers can convert to AVIF here?
- All current ones. Chrome and Edge use their built-in AV1 encoder, which is fast; Firefox, Safari and others use libavif compiled to WebAssembly, which is slower on large photos but gives the same kind of file.
WebP vs AVIF in practice
Both formats are displayed by current browsers. WebP encodes quickly and supports transparency and animation in one format. AVIF often reaches smaller sizes on photos but encodes more slowly. If you already serve WebP and it performs well, convert only your heaviest images and confirm each saving.
Re-encoding lossy files
Converting one lossy format to another stacks two rounds of compression. If you still have the original JPG or PNG, convert that to AVIF directly rather than going through WebP; if you do not, use a moderate-to-high quality setting and inspect the result.
Private by design
Framimo converts your files inside your browser tab, so each image is never sent to a server for this AVIF export (this tool has no server fallback). There is no signup and no watermark, and you can disconnect from the internet once the page has loaded.