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AVIF Converter: PNG and JPG to AVIF

AVIF is the smallest mainstream web image format. Convert images here, compare the size against WebP, and decide which to use.

Files stay on your deviceFreeNo sign-upBatch and ZIP
You came from the Scoped SEO extension. The tool below is ready for the page or image you were checking.
  1. 1Add your images
  2. 2Choose quality
  3. 3Download
Drop images hereor click to choose. PNG, JPG, GIF, BMP, WebP or SVG. You can also paste an image.
AVIF holds quality at lower numbers than JPG.
Compare

How to use it

  1. Drop your images on the box.
  2. Set the quality and encoding speed. Slower speeds give smaller files.
  3. See the size next to WebP and download the AVIF files.

Your privacy

This tool runs in your browser. Your files and text are never uploaded or stored.

Spot this in the extension

The Images tab of Scoped SEO flags oversized images, missing alt text and non-WebP formats on any page, and links straight here to fix them.

By Kumail Kazmi, creator of Scoped SEO. Updated October 2026.

AVIF, WebP and JPG compared

FormatTypical size for a photoBrowser supportEncoding speed
JPGBaselineEverywhereFast
WebPAbout 25 to 35 percent smallerAll current browsersFast
AVIFOften 20 percent or more smaller than WebPCurrent Chrome, Firefox, Edge and SafariSlow

Sizes depend on the image. The tool shows the AVIF size next to a WebP version of the same image, so you can see the difference for your own files.

Serve AVIF with a fallback

List AVIF first, then WebP, then JPG, and the browser picks the first format it understands:

<picture>
  <source srcset="/img/hero.avif" type="image/avif">
  <source srcset="/img/hero.webp" type="image/webp">
  <img src="/img/hero.jpg" alt="Describe the image" width="1200" height="630">
</picture>

Tips for encoding

  • Use quality 50 to 65 as a starting point. AVIF holds up at lower numbers than JPG.
  • Slower speed gives smaller files and takes longer. Large images may need several seconds each.
  • Use WebP as your default and add AVIF for the heaviest images.

Common questions

Is AVIF better than WebP?

AVIF is often 20 percent or more smaller than WebP for photos, but it encodes more slowly and has slightly less tooling. Use WebP as the safe default and AVIF where size matters most.

Which browsers support AVIF?

Current Chrome, Firefox, Edge and Safari all display AVIF. Serve it with a WebP or JPG fallback using the picture element if you need older browsers.

Why is AVIF encoding slow?

The format does heavy analysis to get small files. Large images can take several seconds each in the browser.

Does AVIF support transparency?

Yes. AVIF supports an alpha channel, like WebP.

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