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AVIF to WEBP converter

Convert AVIF to WEBP in your browser. No upload and no account: the file never leaves your device, so the only size limit is your device’s memory.

I want WEBP
90%
Icon sizes
How to make the SVG

Tracing suits logos, icons and flat artwork and scales cleanly. Photos are better kept as pixels inside the SVG.

16
50%
Dither Scatters black dots to suggest gray, instead of a hard cut-off.
Advanced 5
Keep the animation For animated GIF, WebP and APNG sources. Turn off to save just the first frame.
Rotate
Mirror horizontally
Mirror vertically

For an exact width and height, use the Resize Image tool instead.

Bytes of your files sent anywhere: 0 B

Related conversions

Need it the other way round? Convert WEBP to AVIF

Other ways to convert AVIF

Convert other formats to WEBP

Read more about the AVIF format and the WEBP format, or see every image tool and all image conversions.

Should you convert AVIF to WEBP?

Your CMS, image CDN or older browser support target accepts WebP but not AVIF.

A safe conversion when WEBP is what you need: both AVIF and WEBP keep every pixel, so the picture itself doesn’t change.

AVIF is a modern image format that squeezes photos smaller than WebP; WEBP is a web image format that can be lossy or lossless, with transparency and animation. Use WEBP for pictures on your own website or app, where every kilobyte affects load time.

AVIF and WEBP compared
Property AVIF WEBP
Compression Lossy or lossless Lossy or lossless
Transparency Yes Yes
Animation Yes Yes
Support Opens in current browsers and apps Opens in current browsers and apps
Best for The smallest possible photos on a modern website Images on websites, where smaller files load faster
Introduced 2019 2010

How to convert AVIF to WEBP

  1. 01

    Add your AVIF

    Drop your AVIF image onto the box, or click to choose it. It is read from your disk and stays there.

  2. 02

    Check the settings

    The output is already set to WEBP. Change the quality if you want to; the defaults suit most files.

  3. 03

    Save the WEBP

    Press convert and save the WEBP. Several files come back together as a ZIP.

What changes when AVIF becomes WEBP

Transparency is kept

AVIF and WEBP both support transparency, so transparent backgrounds and soft edges come through unchanged.

Animated files keep their first frame

WEBP can animate, but this converter writes animated WEBP only for GIF and APNG targets. An animated AVIF is saved as a still of its first frame.

Expect a larger file

WEBP generally takes more room than AVIF. If the file has to fit an upload limit, check the size once it’s converted. AVIF: Often around half the size of the equivalent JPG. WEBP: Typically 25–35% smaller than the same JPG.

This page is put together from our notes on each format, choosing only what is true of AVIF and WEBP, so every pairing states the same facts the same way. How these pages are made.

Why it doesn’t upload

Changing a picture’s format is work your browser already knows how to do. Sending your photos to a server first only adds waiting and risk, so nothing is sent.

How to check for yourself

Worth knowing

  • About the AVIF. AVIF’s savings are real, but encoding is slow, so a batch that takes seconds as JPG can take minutes as AVIF.
  • About the WEBP. Images saved from websites arrive as WEBP even when the page looked like it showed a JPG, and then a document editor or upload form refuses them.
  • DDS, PSD, EXR, XWD and JPEG 2000 are read by the FFmpeg engine, a one-time 31 MB download.

Questions

Will converting AVIF to WEBP lose quality?

WEBP is lossy, so some detail is discarded. The quality slider decides how much; the default of 90 is chosen so the difference is invisible in almost every photo.

Will the WEBP be smaller than the AVIF?

Expect a larger file. WEBP generally takes more room than AVIF. If the file has to fit an upload limit, check the size once it’s converted. AVIF: Often around half the size of the equivalent JPG. WEBP: Typically 25–35% smaller than the same JPG.

Read more about this

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