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AVIF to WebP converter, without the upload.

Turn AVIF images into WebP. It is converted in your browser, so the file never leaves your device.

Drop AVIF files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

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How to convert AVIF to WebP

  1. Add your AVIF images

    Drop AVIF files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. WebP is already chosen

    Press Convert. Open Options first if you want to change the defaults. The work happens in this tab.

  3. Download

    Save the WebP, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The AVIF to WebP converter is part of this page and runs inside your browser. Your images are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

AVIF to WebP: what to expect

WebP has been supported by browsers and tools for years longer than AVIF, so it is the practical fallback when a CMS, an image CDN or an older Safari cannot handle AVIF. Both formats support transparency. The WebP will usually be somewhat larger.

The defaults suit most files. Under Options you can set the quality, aim for a target file size and resize the result.

The WebP encoder is a WebAssembly module that downloads the first time you convert to WebP and is cached afterwards.

AVIF vs WebP

AVIF

AVIF image

AVIF stores a still image using the AV1 video codec. It usually beats both JPG and WebP on file size and supports transparency, HDR and wide colour. Current browsers display it, but many image editors, viewers and upload forms still do not.

Opens in Chrome, Firefox, Edge and Safari 16 or later; few desktop apps

AVIF converter
WEBP

WebP image

WebP is Google's image format for the web. It is typically a quarter to a third smaller than JPG or PNG at similar quality and supports both transparency and animation. Browsers handle it well; older editors, printers' portals and some messaging apps do not.

Opens in All current browsers; many older desktop apps and upload forms do not accept it

WebP converter
AVIF compared with WebP
AVIFAVIF imageWEBPWebP image
Stands forAV1 Image File FormatWebP
TypeRaster imageRaster image
CompressionLossy or lossless (AV1)Lossy or lossless
TransparencyYesYes
AnimationYesYes
Introduced2019, by the Alliance for Open Media2010, by Google
Opens inChrome, Firefox, Edge and Safari 16 or later; few desktop appsAll current browsers; many older desktop apps and upload forms do not accept it
Best forThe smallest images for websitesImages on websites
File extension.avif.webp

Questions

Are my images uploaded anywhere?

No. The AVIF to WebP conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Does converting AVIF to WebP reduce quality?

A little: ToAny writes WebP in its lossy mode, so a small amount of detail is traded for a much smaller file. At the default setting the difference is hard to notice. You can raise the quality under Options; there is no lossless setting.

Can I convert several AVIF files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert AVIF to WebP on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the AVIF file, press Convert and save the WebP. There is nothing to install.

Is there a file size limit?

Pictures of up to 120 megapixels are accepted (for example 12,000 by 10,000 pixels); a larger one is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.