WebP to AVIF Converter
Convert WebP images to AVIF for the smallest possible files. AVIF compresses about 20-50% better than WebP while keeping the same visual quality, ideal when you control the delivery pipeline.
Smaller files
At equivalent visual quality, AVIF files are 20-50% smaller than WebP. Real bandwidth savings when serving images at scale.
Modern HDR-ready format
AVIF supports 10-bit and 12-bit color depth and HDR, where WebP is limited to 8-bit. Useful for high-fidelity photography.
Transparency preserved
Both formats support full alpha transparency, so your icons and overlays convert without any visual change.
Real-world size comparison
Average sizes measured on WebP images re-encoded to AVIF at quality 80. AVIF delivers significant savings over WebP.
| Image type | Source | Output | Saved |
|---|---|---|---|
| Photograph 1920×1080 | 145 KB (WebP) | 95 KB (AVIF) | −34% |
| E-commerce product 1200×1200 | 70 KB (WebP) | 55 KB (AVIF) | −21% |
| Screenshot 1440×900 | 42 KB (WebP) | 35 KB (AVIF) | −17% |
| Banner 1200×628 | 85 KB (WebP) | 52 KB (AVIF) | −39% |
Compatibility at a glance
AVIF is supported by over 95% of global users in 2026. When serving at scale, combine AVIF with a WebP fallback.
| Platform | Status |
|---|---|
| Chrome 85+ (since Aug. 2020) | Supported |
| Firefox 113+ (since May 2023) | Supported |
| Safari 16.4+ (since Mar. 2023) | Supported |
| Edge 121+ (since Jan. 2024) | Supported |
| Older Safari (< 16.4) and IE 11 | Not supported |
| WordPress (since 6.5, Apr. 2024) | Supported |
When to convert, when to keep the original
Convert when
- You already serve WebP and want to squeeze out more savings
- You control the delivery pipeline (CDN, picture element)
- Your audience is on modern browsers (Chrome 85+, Safari 16.4+)
- You are optimising hero images or LCP-critical assets
Keep the original when
- Your CMS or CDN does not support AVIF yet
- You target older Safari or embedded webviews
- The WebP files are already under 10 KB (marginal gain)
Frequently Asked Questions
When should I convert WebP to AVIF?
Convert when you can verify your audience uses recent browsers (Chrome 85+, Firefox 113+, Safari 16.4+) or when you serve AVIF as the primary source with a WebP fallback via the picture element.
Is AVIF really smaller than WebP?
Yes, in most cases. AVIF uses the AV1 video codec which has stronger compression than the VP8 codec used by WebP. The gain is most visible on photographic content.
Will all browsers display the AVIF result?
AVIF support reaches around 95% of users in 2026, but if you target older browsers consider serving AVIF with a WebP or JPG fallback through the picture element.
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