AVIF to WebP converter
Convert AVIF images to WebP in your browser — re-encoded once at the quality you choose. Free, no sign-up, nothing uploaded.
Part of image tools and design tools.
Reads PNG, JPEG, WebP, GIF, SVG, AVIF, HEIC, TIFF. Writes PNG, JPEG, WebP, ICO — ICO with every icon size up to 256 px. HEIC and TIFF decoders load only when you pick such a file.
What happens to quality
Both formats are lossy, so this is a second round of compression: the WebP is encoded from pixels the AVIF has already simplified. At 85% quality or more the extra loss is hard to see; lower than that, artefacts from both encoders stack up. Convert from the best original you have rather than from a copy that has already been through this once. WebP is typically 25-35% smaller than a JPEG of the same visual quality and every current browser displays it, which makes it the sensible target for images going on a website.
What happens to transparency
AVIF and WebP both have an alpha channel, so transparent and semi-transparent pixels come through as they are — a logo on a transparent background stays on a transparent background.
If your browser cannot open AVIF
The AVIF is decoded by your browser itself. Chrome, Edge and Firefox have read AVIF for years and Safari since version 16.4; when the fast path refuses the file, the converter retries through an image element, which some Safari versions handle first. If both fail, it says so plainly instead of producing an empty file — update the browser, or open the page in another one. An animated AVIF converts as its first frame.
If your browser cannot write WebP
Every current browser displays WebP, but not every one can write it — older Safari versions in particular. When the browser silently hands back something else, the converter notices and says so, rather than giving you a file named .webp that is really a PNG. PNG and JPG work everywhere.
Your AVIF never leaves this page
Most online AVIF to WebP converters upload the file to a server and send the result back. This one decodes and re-encodes it with the image APIs built into your browser, so the WebP you download was produced on your own machine — you can check by opening the network tab, or by going offline and converting anyway.
Other conversions
Or open the full image converter and pick any output format.