Technical MIME Specification & Web Server Guide
video/webm
Technical overview, official IANA specification, header magic bytes, and server configuration snippets for .WEBM files (WebM Video File).
File Extension
.webm
Content-Type Header
video/webm
Format Category
Video
Standard Specification
IANA Registered Standard
Description & Usage
Open web video format backed by Google using VP8/VP9 or AV1 video codecs.
HTTP Server Content-Type Configuration Code
# Nginx mime.types configuration for .webm
types {
video/webm webm;
}OS Compatibility Matrix
Windows
macOS
Linux
Android
iOS
Want to test header signatures or binary files?
Run binary magic byte inspection in Magic Byte Detector.
Frequently Asked Questions
The official MIME content type for .webm files is "video/webm". Web servers use this header to instruct browsers how to render or process .webm data.