Convert WebP to AVIF Online Free
Upgrade WebP images to the next-generation AVIF format for additional file size savings and improved visual quality at low bitrates.
To convert WebP to AVIF, drop your WebP file into the converter above. ChangeThisFile re-encodes the image as AVIF directly in your browser, typically achieving 20-30% smaller files than WebP at equivalent quality. The conversion is free, instant, and your files never leave your device.
Convert WebP to AVIF
Drop your WebP file here to convert it instantly
Drag & drop your .webp file here, or click to browse
Convert to AVIF instantly
WebP vs AVIF: Format Comparison
Key differences between the two formats
| Feature | WebP | AVIF |
|---|---|---|
| Compression | Lossy (VP8) or lossless (VP8L) | Lossy or lossless (AV1) |
| File size | 30% smaller than JPG | 50% smaller than JPG, 20% smaller than WebP |
| Transparency | Full alpha channel | Full alpha channel |
| Color depth | 8-bit per channel | Up to 12-bit, HDR support |
| Animation | Supported (VP8) | Supported (AVIF sequences) |
| Browser support | Chrome, Firefox, Edge, Safari 14+ | Chrome 85+, Firefox 93+, Safari 16.4+ |
| Encoding speed | Moderate | Slower (more complex) |
| Developed by | Alliance for Open Media |
When to Convert
Common scenarios where this conversion is useful
Upgrading web images to next-gen format
If your website already serves WebP, converting to AVIF provides an additional 20-30% size reduction. Serve AVIF to supported browsers and fall back to WebP for others.
Maximum compression for bandwidth-limited scenarios
For users on slow connections or metered data plans, AVIF delivers the smallest possible files. Convert your WebP assets to AVIF for the best mobile experience.
Improving image quality at low bitrates
AVIF outperforms WebP at very low bitrates, producing fewer artifacts around edges and gradients. Convert WebP thumbnails to AVIF for noticeably cleaner small images.
Future-proofing image assets
AVIF is backed by the Alliance for Open Media and rapidly gaining adoption. Converting your WebP library to AVIF prepares your assets for the emerging standard.
How to Convert WebP to AVIF
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1
Drop your WebP file
Drag and drop your WebP image into the converter area, or click browse to select it from your device.
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2
Instant conversion
Your browser decodes the WebP and re-encodes it as AVIF using the Canvas API. The AV1-based compression further reduces file size beyond WebP.
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3
Download your AVIF
Save the converted AVIF file. Expect an additional 20-30% file size reduction compared to the WebP source.
Frequently Asked Questions
For compression efficiency, yes. AVIF typically produces 20% smaller files than WebP at the same visual quality, with better handling of fine details and fewer artifacts. WebP has the advantage of faster encoding and broader browser support.
There is some generation loss since both are lossy formats. However, AVIF's superior compression means the re-encoded file often looks comparable to the WebP while being smaller. The difference is typically imperceptible.
This converter handles static images. Animated WebP files will be converted as a single static frame. AVIF does support animation through AVIF sequences, but that requires specialized encoding.
Actually, all browsers that support AVIF also support WebP. The question is reversed: Safari 14-16.3 supports WebP but not AVIF. AVIF support is a subset of WebP support currently.
Ideally, serve both using the HTML <picture> element. Browsers that support AVIF get the smaller file; others fall back to WebP, then JPG. This progressive enhancement approach maximizes performance.
AVIF encoding is typically 3-5x slower than WebP due to the complexity of the AV1 codec. For a client-side converter this means a few extra seconds for large images, but the file size savings are worth it.
Yes. AVIF supports full alpha channel transparency, so transparent areas in your WebP image are preserved in the AVIF output.
Yes. The entire conversion happens in your browser using the Canvas API. Your WebP files are never uploaded to any server. This is safe for confidential and personal images.
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