Convert WebP to AVIF

Turn WebP files into AVIF without uploading anything. Drop in one image or a whole folder, adjust the quality, and download the results.

Drop WebP images hereAdd one image or a whole batch, then pick your settings.Choose WebP imagesPNG, JPG, WebP, and AVIFStays on your device, never uploaded

What this tool does

  • WebP to AVIF at full resolution
  • Batch conversion with a single zip download
  • Quality control for the output file size
  • Runs fully in the browser, no upload
  • Free, no signup, no watermark

What WebP is good at

WebP has both a lossy and a lossless mode and supports transparency in both, which is what lets it replace PNG and JPG at once. At matching visual quality it is typically 25 to 35 percent smaller than JPG and meaningfully smaller than PNG for the same graphic. Its one hard limit is dimensional: neither side can exceed 16,383 pixels.

What AVIF gives you

AVIF applies the AV1 video codec to still images, which buys it the best compression in general use: lossy and lossless modes, an alpha channel, and 10 and 12-bit colour with HDR. Files are commonly half the size of an equivalent JPG and a small fraction of a PNG. Encoding is slower than the older formats, which is the price of the ratio.

Converting WebP to AVIF

AVIF usually beats WebP by another 20% or so at matching quality, so it is worth the move for anything you serve at scale. Transparency survives the conversion, so a WebP with a cut-out subject stays cut out as AVIF. Re-encoding always costs something, so convert from the highest-quality copy you have rather than from an already-compressed export. The result supported by Chrome, Firefox, and Safari 16 and later, but not by much older software.

Frequently asked questions

AVIF usually beats WebP by another 20% or so at matching quality, so it is worth the move for anything you serve at scale.

Current versions of Chrome, Edge, Firefox, and Safari 16 and later display AVIF. If your site needs to support older browsers, serve the AVIF with a WebP or JPG fallback using the HTML picture element, and the browser picks the first format it understands.

No. Because the conversion happens on your own machine there is no server quota to hit. The practical limit is your device's memory, and files are processed one at a time to keep that manageable.

No. Every tool on this page runs entirely in your browser using the Canvas and Web Worker APIs. Your files are read from disk, processed in the tab, and written straight back to your downloads folder. Nothing is uploaded, stored, or logged, which also means the tool keeps working if you go offline after the page loads.

It is completely free with no signup, no account, no daily limit, and no watermark. Screenshot Studio is open source under the Apache 2.0 licence.

Related tools

AVIF to WebPWebP to PNGWebP to JPGPNG to AVIFJPG to AVIFConvert Image

Need more than a quick fix? The screenshot editor adds backgrounds, frames, and shadows. You can also remove an image background.