Video

The WEBM format

Born for the web, it uses only open, royalty-free codecs. It’s the format many browsers use to record the screen and webcam. Outside the browser, though, it doesn’t always open.

Drop your files hereor (WEBM and over 40 other formats). You can also paste an image.No upload: everything happens on your device

Fact sheet

WEBM

WebM (a Google project)

Best for: Videos for websites, screen recordings.
Limits: Some editing programs, TVs and older iPhones can’t read it.
Type: video container for the web
Typical codecs: VP8, VP9, AV1, Opus
Compatibility: all modern browsers
Extensions: .webm
MIME type: video/webm
Since: 2010

Convert WEBM to…

Convert to WEBM from…

Tools for WEBM files

Questions about the WEBM format

How do I open a WEBM file?

Usually a double click is enough: operating systems and the most common programs recognise it. If the program or website you use won’t accept it, you can convert it here to a more common format, for example MP4.

What extension do WEBM files have?

.webm. The MIME type is video/webm.

Does converting a WEBM lose quality?

It depends on the target format: to lossless formats (PNG, FLAC, WAV) nothing is lost; to compressed formats (JPG, MP3, MP4) you can choose the quality to balance size and result.