What Is a WEBM File?
This is a video file based on the same video format that utilizes theMKVfile extension.
Since this format is sometimes used on websites for video streaming, it’s supported by most web browsers.

WEBM video in Edge.
If your web client doesn’t play the video, confirm it’s fully updated.
WebM support was included starting with Chrome 6, Opera 10.60, Firefox 4, and Internet Explorer 9.
Those are all ancient versions, so chances are slim that your net net app is this outdated.

WEBM video in Edge.
Devices running Android 2.3 Gingerbread and newer can open WebM videos natively without any special apps.
If you oughta open WEBM files on iOS, use PlayerXtreme Video Player or VLC media player.
you’re free to also convert it to a supported format (see below).

SeeThe WebM Projectfor other compatible media players.
Still Can’t Open It?
WEB files are similar, but they are web document files used by Xara Designer Pro.
macro files or Embla RemLogic recordings).
Double-check the file extension if your file isn’t opening with the programs mentioned above.
It might be in an entirely different format that none of these programs can open.
More Information on the WEBM Format
WebM is a compressed file format.
WebM has been developed by a number of companies, including On2, Xiph, Matroska, and Google.
The format is available for free under a BSD license.
FAQ
There are various free tools available to help you create a WEBM file.
Some WEBM creation tools include Leawo, Video2Edit, and FFmpeg.
Use a WEBM compressor to reduce a WEBM file’s size.
One such tool is Sonix, which offers a free trial account.
You upload a WEBM file and select its language.
Then Sonix uses artificial intelligence to transcribe the audio and convert it to a downloadable PDF.