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Convert AVIF to WebP

Free · no signup · no watermark · nothing is stored · batch up to 20 files

Drop your AVIF files here

or click to choose — up to 20 at once

Select AVIF file

Higher keeps more detail and makes larger files. 80 to 90 is the range most people cannot tell from the original.

This runs entirely in your browser. The file never leaves your machine and nothing is uploaded. Need test files? Try our free sample files.

This free AVIF to WebP converter turns your .avif images into .webp files. AVIF is what a modern site serves to save bandwidth, and what almost no desktop application will open. People usually arrive here having saved one from a web page and found that Photoshop, Preview, Windows Photos and every stock uploader refuse it.

Because browsers cannot write WebP, this one runs on our server: the file is converted in memory and sent straight back. It is never written to disk, never logged and never stored.

How to convert AVIF to WebP

  1. Drop your AVIF files onto the box above, or click it to choose from your computer. Up to 20 at once.
  2. Set the quality if you want to trade size against detail. 85 is a good default; below about 70 the loss starts to be visible.
  3. Download each converted file, or pick them up one by one from the list.

What changes when you convert AVIF to WebP

Both formats are lossy, so this is a re-encode and a small amount of quality is lost in the process. Convert from the highest-quality original you have rather than from a file that has already been through several rounds.

AVIF and WebP compared

AVIFWebP
Full nameAV1 Image File FormatWebP
Extension.avif.webp
MIME typeimage/avifimage/webp
CompressionLossyLossy
TransparencyYesYes

AVIF: Built on the AV1 video codec, typically half the size of JPG at the same quality, with transparency and wide colour. Browsers can display it, but almost no desktop software can open or edit it, which is why converting out of AVIF is such a common need.

WebP: Google's web format: roughly 25 to 35 percent smaller than JPG at comparable quality, with transparency and animation. Supported by every current browser.

Frequently asked questions

How do I convert AVIF to WebP?

Drop your .avif file onto the box on this page and the .webp file is ready to download in a second or two. There is no signup, no email, no watermark and no file limit beyond about 4 MB per upload — larger images are re-encoded smaller in your browser first, and the page says so when that happens.

Is this AVIF to WebP converter free?

Yes, completely, with no account, no trial and no watermark on the output. We are a consultancy and these tools exist because we needed them ourselves; there is nothing to buy on this page.

Are my files uploaded anywhere?

This one has to run on our server, because browsers cannot write WebP. The file is converted in memory and returned immediately — it is never written to disk, never logged and never stored. If that is not acceptable for your file, use a desktop tool instead.

Will converting to WebP reduce the quality?

Both formats are lossy, so this is a re-encode and a small amount of quality is lost in the process. Convert from the highest-quality original you have rather than from a file that has already been through several rounds.

Can I convert several AVIF files at once?

Yes, up to 20 files in one go. Drop them all onto the box together and each one appears in the results list with its own download button.

Found a problem, or something that could be better? We read every message and we fix things quickly.

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File Converters by Pine & Birch — technology consulting, Toronto. Free to use, no signup, no attribution required.