WebP to AVIF Converter
To convert WebP to AVIF, add your WebP images, choose AVIF and press Convert. The quality slider starts at 60%, which keeps most pictures looking clean at a noticeably smaller size. Encoding AVIF takes longer than other formats, so large batches need some patience. Transparency is kept. The work happens in your browser and the files never leave your device.
- Free, no sign-up
- Your file never leaves your device
- Up to 50 MB per file
Your file never leaves your device; images are processed in your browser. EXIF and location data are not added to the output.
How to convert WebP to AVIF
Add your WebP files
Drag the images onto the upload area or browse for them; you can add several files at once.
Keep AVIF as the output
AVIF is already selected. For formats with a quality setting the slider starts at a default that suits the format (JPG 90%, WebP 80%, AVIF 60%); lower it if you want a smaller file.
Convert and download
Press “Convert”. Every file is processed in your browser, and you can download the results one by one or as a ZIP.
What is preserved?
Kept
- The image resolution (pixel dimensions)
- The correct photo orientation (EXIF orientation is applied)
- Colors (adapted to sRGB)
- Transparency (alpha channel)
Changed
- AVIF is a lossy format: lower quality means a smaller file but less fine detail
Not carried over
- EXIF, location and camera data: left out of the output for privacy
- Motion: only the first frame is converted
When to use it
Squeeze more out of website images
If your site already serves WebP, switching heavy hero images and product photos to AVIF can cut a further share of the page weight while modern browsers display them the same way.
Archive web graphics compactly
For a large collection of WebP downloads that you keep for reference, AVIF stores them in less disk space at a comparable visual quality.
Limitations to know
- For animated WebP files only the first frame is converted. Animated AVIF output is not supported.
- Up to 50 MB per file; the output can be at most 16,384 pixels on one side.
- On iPhone and iPad, images above roughly 16 megapixels may not be processed because of a browser limit.
About the formats
What is WebP?
WebP is an image format developed by Google for the web. It supports both lossy and lossless compression, transparency and animation, and typically produces smaller files than JPG or PNG at similar quality. All current browsers display WebP, though some older editors and print services cannot open it.
What is AVIF?
AVIF is a modern image format based on the AV1 video codec. It delivers very small files at high visual quality, supports transparency, HDR and animation, and is among the most efficient formats for the web. Encoding is slower than for other formats, and some older software cannot open AVIF yet.
Frequently asked questions
How much smaller is AVIF than WebP?
It depends on the picture, but photos often end up a fifth to a third smaller at a similar look. Simple graphics may shrink less; the result bar shows the exact before and after size.
What happens to an animated WebP?
Only its first frame is encoded, so you get a still AVIF. Animated AVIF output is not produced on this page.
Can every browser show AVIF?
Current versions of Chrome, Edge, Firefox and Safari can. Older browsers, some image viewers and many office programs cannot, so keep the WebP or a JPG if you need maximum compatibility.
Why does AVIF conversion take so long?
AVIF searches much harder for an efficient way to compress each image than WebP does. That extra work is what makes the files small, and it is done on your own computer, so speed depends on its processor.
Is converting WebP to AVIF free?
Yes, completely free. There is no account, subscription or watermark; just add your files and convert them.
Are my files uploaded anywhere?
No. Images are processed in your browser and never leave your device, so the waiting time depends on the file size and your device. EXIF and location data are not added to the output.