Convert WebP to AVIF — Free, Private, No Upload
Convert WebP images to high-quality AVIF format instantly. No upload, batch processing, free.
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How to Convert WebP to AVIF
Select your WebP files
Choose files or drag and drop them into the converter. Any image format is accepted.
Convert to AVIF
Conversion starts automatically with optimized defaults. Adjust quality in advanced settings.
Download
Download converted files individually or as a ZIP archive.
Why Convert WebP to AVIF?
AVIF offers even better compression than WebP, producing files 20–30% smaller at comparable visual quality. If you are already using WebP and want to push your image optimization further, converting to AVIF is the next step. This is especially valuable for media-heavy sites where every kilobyte affects loading speed.
AVIF is based on the AV1 video codec developed by the Alliance for Open Media. It handles photographic content, gradients, and fine textures better than WebP. It supports transparency, wide color gamut, and HDR, matching or exceeding all of WebP's capabilities.
LeanImg converts WebP to AVIF entirely in your browser. Your images never leave your device — no upload, no server involved, no account required. Processing is free and unlimited.
The tradeoff is encoding speed: AVIF takes longer to create than WebP due to its more complex compression. For the best web strategy, serve AVIF to supported browsers and WebP as a fallback. After converting, use our compressor to fine-tune the output.
WebP vs AVIF
| Feature | WebP | AVIF |
|---|---|---|
| File Size | Small | 20–30% smaller |
| Transparency | Yes | Yes |
| Compression | Lossy or lossless | Lossy or lossless |
| Browser Support | All modern | Chrome, Firefox, Safari |
| Best For | Web delivery | Web delivery (next-gen) |
| Encoding Speed | Fast | Slower |
Frequently Asked Questions
How to convert WebP to AVIF?
Visit LeanImg in any browser, drag your WebP files into the converter, and download AVIF versions instantly. The tool is free, no sign-up is needed, and your images never leave your device. You can convert multiple WebP files in a single batch.
Is it safe to convert WebP to AVIF online?
Yes. LeanImg processes images locally in your browser using WebAssembly. No images are uploaded to any server, no data is stored, and your files stay completely private on your device. It is as secure as using a native desktop application.
How to convert WebP to AVIF on Mac?
Open Safari, Chrome, or Firefox on your Mac and navigate to LeanImg. Drop your WebP files into the converter and download AVIF files in seconds. No software to install, no account to create. It works on any Mac with a modern browser.
Is AVIF better than WebP?
For compression efficiency, yes. AVIF produces 20–30% smaller files than WebP at similar quality. Both support transparency and animation. The main advantage of WebP is faster encoding and slightly broader software support. AVIF is the future-proof choice.