AVIF to WebP Converter
Convert an AVIF image to WebP directly in your browser.
This tool runs entirely in your browser. Your files are never uploaded to a server.
Drop an AVIF here or click to upload
What this tool does
Converts an AVIF image to WebP by decoding it with your browser's native, built-in AVIF support and re-encoding the result as WebP on a canvas — no WebAssembly download needed for this direction.
How to use it
Drop or select one AVIF file. Your browser decodes it immediately since AVIF viewing is natively supported; a ready-to-download WebP appears within a second or two.
Worked example
Upload hero-image.avif (140 KB) and you get hero-image.webp ready to download — same pixel dimensions and visual content, re-encoded at 92% WebP quality.
Why convert to WebP
Some CMSs, CDNs and image-processing pipelines already support WebP but haven't added AVIF yet, so converting keeps the image compatible with those systems while staying in a modern, efficient format.
What changes technically
The browser decodes the AVIF natively, draws it onto a canvas, then re-encodes it as WebP at 92% quality. WebP supports transparency, so any alpha channel in the source AVIF is preserved in the output.
Limitations
Only one file can be converted at a time — there's no batch mode. AVIF generally compresses better than WebP at equivalent quality, so the resulting WebP file is often somewhat larger than the original AVIF.
Scope, sources and privacy
Decoding relies on your browser's native, built-in AVIF support rather than a bundled library. Conversion runs entirely in your browser using the Canvas API; your image is never uploaded to a server.
Frequently Asked Questions
- Is my image uploaded to a server?
- No — conversion happens entirely in your browser. Your file never leaves your device.
- Isn't AVIF already smaller than WebP?
- Usually yes — AVIF generally compresses better than WebP at the same quality, so converting to WebP is about compatibility with a tool or platform, not about saving space.
- Does the converted WebP keep transparency?
- Yes — WebP supports an alpha channel, so any transparent pixels in the source AVIF are preserved.