AVIF to WebP Converter - Convert AVIF to WebP Online Free

How to convert AVIF to WEBP

Add your AVIF files. Drop up to 50 AVIF images into the box, or browse for them. They are decoded on your device and never uploaded.
Set the WebP quality. Quality 85 is the default and looks like the original. Turn on Lossless for logos and screenshots. The size shown is measured from the real file.
Adjust if you like. Keep or fill transparency, resize or rename the files. Every option starts closed and shows its value.
Convert and download. Press Convert to WebP. One or two files download directly, more than two come as a ZIP.

Serving both on a website? Put the AVIF first and the WebP as the fallback in a picture element - browsers pick the best one they can show.

Why convert AVIF to WebP?

WebP is the safe middle ground between AVIF and JPG.

It is almost as small as AVIF, keeps transparency, and opens in more places - older Safari versions, WordPress plugins, Office, chat apps and most image editors.

It is also the usual fallback on websites that serve AVIF to modern browsers.

AVIF vs WebP

	AVIF	WebP
Compression	Best - often 20-30% smaller	Very good
Transparency	Yes	Yes
Animation	Yes	Yes
HDR / 10-bit	Yes	No - 8 bits per channel
Encoding speed	Slow	Fast
Support	All modern browsers	All modern browsers, more apps

Going the other way? WebP to AVIF shrinks WebP files a little further. Test files are in the AVIF sample files.

Will the WebP be bigger?

Usually a little. AVIF compresses better, so expect the WebP to be somewhat larger at the same look.

Quality 75-85 keeps the difference small. Lossless WebP is much bigger and only worth it for logos, icons and screenshots.

Want the smallest possible file instead? Keep the AVIF and shrink it with Compress AVIF.

Browser notes

Safari can show WebP but cannot write it - open this page in Chrome, Edge or Firefox to convert.
Animated AVIF becomes one animated WebP with the original timing. Turn Keep the animation off to save single frames instead. Animated output needs Chrome, Edge or Firefox.
HDR AVIF - pick Keep brightness or Keep colour for how it becomes normal colour.

Frequently Asked Questions

Drop your AVIF files into the box, keep quality 85 or pick a preset, and press Convert to WebP.

One file downloads as a WebP, more than two come as a ZIP.

No. Your browser decodes the AVIF and writes the WebP on your device. Only a browser that cannot read AVIF at all sends that one file to our server to decode, and the copy is deleted right away.

Not for size - AVIF is usually 20-30% smaller. WebP wins on support and speed: more apps open it and it encodes much faster.

Yes. Transparent areas stay transparent in both lossy and lossless WebP. Pick Fill background for a solid colour.

Safari displays WebP but has no WebP encoder for web pages. Use Chrome, Edge or Firefox, or convert to JPG or PNG instead.

Lossy (quality 75-90) for photos - small and clean. Lossless for logos, icons and screenshots, where every sharp edge should stay exact.

Yes. Keep the animation is on for animated files, so every frame plays in one animated WebP, with the original timing. Change the speed or make it play once under Animation.

Need a video instead? Use AVIF to MP4.