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WebP to AVIF Converter

Convert WebP images to AVIF right in your browser, one file or a whole batch. For photos, the AVIF is usually a little smaller.

  • Free, no sign-up
  • Files never leave your device
  • Batch processing
  • No watermark
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Your files are processed on this device and are never uploaded to a server.

What happens when you convert WebP to AVIF

CompressionLossy or lossless → Lossy or lossless
File sizeUsually somewhat smaller for photos
TransparencyKept
AnimationFirst frame only
MetadataEXIF, GPS location and camera data are not copied to the new file
Opens inChrome, Edge, Firefox, Safari 16+ and Windows 11 with the AV1 extension; most editors and CMSs do not yet

Sizes are typical values; your files will vary with content and settings.

WebP

WebP Web Picture format

WebP is Google's web image format. It supports both lossy and lossless compression plus alpha transparency, and typically produces files 25 to 35 percent smaller than JPG at similar visual quality. Every current browser displays it.

WebP converter
AVIF

AVIF AV1 Image File Format

AVIF stores images with the AV1 video codec. It usually beats WebP on file size, handles HDR and wide colour, and supports transparency. Chrome, Firefox, Edge and Safari 16+ display it.

AVIF converter

How to use the WebP to AVIF Converter

  1. 1

    Click Choose files or drop your WebP images onto the page.

  2. 2

    Adjust the AVIF options if needed. The defaults work well for most images.

  3. 3

    Click Convert, then download each AVIF or all of them as a ZIP.

Why convert WebP to AVIF?

WebP files mostly arrive when you save an image from a website, because Chrome and most large sites now serve WebP instead of JPG or PNG. Older desktop software, some print shops and many upload forms still reject it. Choose AVIF for the smallest web images, after checking that your CMS or upload target accepts it.

WebP to AVIF settings

Use the quality slider to balance size against detail; 80 to 90 percent is a good default for AVIF. Animated WebP files are converted using their first frame. You can also cap the width and height, which resizes large photos in the same step.

Frequently asked questions

Will the AVIF lose quality?

Both formats are lossy, so converting re-encodes the data once more. Using a high quality setting keeps the generational loss very small. Avoid converting the same file back and forth repeatedly.

Is transparency kept when converting WebP to AVIF?

Yes. AVIF supports transparency, so transparent areas in your WebP stay transparent.

Will the AVIF be smaller than the WebP?

Usually a little smaller for photos: as a rough guide, the AVIF comes out at around 75% of the WebP's size, depending on the quality setting.

Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.