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WebM to APNG converter, without the upload.

Turn WebM videos into APNG. It is converted in your browser, so the file never leaves your device.

Drop WebM files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

Convert to

How to convert WebM to APNG

  1. Add your WebM videos

    Drop WebM 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. APNG is already chosen

    Press Convert. Open Options first if you want to change the defaults. The work happens in this tab and can take a while for large files.

  3. Download

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

Why ToAny

  • Private by construction

    The WebM to APNG converter is part of this page and runs inside your browser. Your videos are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so work starts the moment you press Convert. How long it takes depends on your device and the size of the file.

  • Free, without an account

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

WebM to APNG: what to expect

WebM does not play on many phones, TVs or in most video editors. APNG animates with full colour and smooth transparency, which GIF cannot do. WebM is at home in royalty-free video on websites; APNG is the usual choice for animated stickers and graphics that need real transparency. APNG has no sound, so the audio track is dropped.

The defaults suit most files. Under Options you can set the frame rate, set the width and trim the start and end. This is demanding work for a browser: a long or high-resolution file can take several minutes, and your device does all of it, so keep the tab open.

This pair uses the compatibility engine, ffmpeg built for the browser, because APNG cannot be written by the browser's built-in codecs. It is a one-off download of about 10 MB that the browser keeps, it is slower than the built-in codecs, and it takes files up to 1 GB. The result is a looping animation of at most 30 seconds, counted from the start point you set under Options. The defaults are 12 frames per second and 480 pixels wide. Unlike a GIF it keeps full colour and smooth transparency, and it has no sound.

WebM vs APNG

WEBM

WebM video

WebM is an open, royalty-free video format built for the web. It is a restricted form of Matroska holding VP8, VP9 or AV1 video. Browsers play it; iPhones, TVs and video editors often do not.

Opens in Chrome, Firefox, Edge and recent Safari; few TVs and editors

WebM converter
APNG

Animated PNG

APNG extends PNG with animation while staying backwards compatible: a program that knows only PNG shows the first frame. Unlike GIF it has 24-bit colour and a full alpha channel. Firefox pioneered it and every major browser now plays it.

Opens in All current browsers; many image viewers show only the first frame

APNG converter
WebM compared with APNG
WEBMWebM videoAPNGAnimated PNG
Stands forWebMAnimated Portable Network Graphics
TypeVideo containerRaster image
CompressionLossyLossless
Introduced2010, by Google2004, by Mozilla
Opens inChrome, Firefox, Edge and recent Safari; few TVs and editorsAll current browsers; many image viewers show only the first frame
Best forRoyalty-free video on websitesAnimated stickers and graphics that need real transparency
File extension.webm.apng

Questions

Are my videos uploaded anywhere?

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

Does converting WebM to APNG reduce quality?

The content is carried over as faithfully as APNG allows; features that APNG does not have are left out.

Can I convert several WebM 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 WebM to APNG 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 WebM file, press Convert and save the APNG. There is nothing to install.

Is there a file size limit?

Yes. WebM to APNG runs on the compatibility engine, which takes files up to 1 GB, and a long clip takes a while because it is slower than the browser's built-in codecs. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.