Convert MP4 to WebM

Convert MP4 videos to WebM format online for free. Fast, secure, and easy conversion. No registration required.

Conversion Settings

Speed:
🎬

Drag & drop your video

or click to browse

Supports MP4, WebM, MOV, AVI, MKV, FLV, WMV, MPEG, 3GP, OGV, GIF

Why convert MP4 to WebM?

Changing containers or codecs can shrink files, speed up uploads, or make playback smoother on the web and mobile.

Why choose WebM

  • Compatibility: Many sites and editors prefer WebM for delivery.
  • Size: Modern codecs can cut bitrate without obvious quality loss.
  • Playback: WebM often streams efficiently in HTML5 players.
  • Privacy: Files are processed locally in the browser.

MP4 vs WebM

Both formats have strengths; choose WebM when it fits publishing or editing requirements.

MP4 overview

  • Common capture or export format with broad tool support
  • Quality and size depend on bitrate and resolution
  • Keep a master copy before lossy re-encoding

WebM overview

  • Target-friendly for web or mobile delivery
  • May change compatibility with older devices
  • Great when you need a smaller or web-native file

How it works

Upload, convert, and download without server uploads of your media.

Steps

  • Upload MP4 video.
  • Adjust format settings if available.
  • Download WebM output.

Tips

  • Longer videos need more RAM—close heavy tabs before converting.
  • Match resolution to your target platform to avoid oversized files.
  • Test playback in the browser or device you care about most.
Convert MP4 to WebM - Free Online MP4 to WebM