Compress WebM Videos

WebM is an open-source video format designed specifically for web streaming. It offers excellent compression with VP9 or AV1 codecs and is royalty-free, making it ideal for websites and HTML5 video.

Quick Compress
Choose a file, pick how small it should be, and compress locally.
%

Percentage is applied to the original file size.

Why Choose WebM?

  • Royalty-free and open source
  • Excellent compression with VP9 and AV1
  • Designed specifically for web streaming
  • Smaller file sizes than MP4 at same quality
  • Native HTML5 video support
  • Used by YouTube for high-quality videos

WebM Limitations

  • Limited compatibility on Apple devices (no Safari support)
  • Not supported on many TVs and game consoles
  • Slower encoding than MP4/H.264
  • Fewer hardware decoders available

Best Uses for WebM

  • Website video embeds and backgrounds
  • HTML5 video streaming
  • Open-source projects
  • Chrome and Firefox-exclusive content
  • High-quality streaming on low bandwidth
  • Avoiding codec licensing fees

Compatible Codecs

WebM supports VP9, VP8, AV1 for video and OPUS, VORBIS for audio.

Technical Specifications

  • Container: Matroska-based container (subset of MKV)
  • Streaming: Excellent - optimized for adaptive streaming
  • Compatibility: Good on Chrome/Firefox, limited on Apple devices

How to Compress WebM Videos

  1. Upload your video file
  2. Select WebM as output format
  3. Choose codec and quality settings
  4. Set target file size
  5. Compress locally in your browser

Frequently Asked Questions

What is WebM?

WebM (WebM (Web Media)) is a video container format. WebM is an open-source video format designed specifically for web streaming.

When should I use WebM?

Use WebM for: Website video embeds and backgrounds; HTML5 video streaming; Open-source projects. It's the go-to format for these use cases.

What codecs work with WebM?

WebM supports VP9, VP8, AV1 for video and OPUS, VORBIS for audio. This gives you flexibility in choosing the best codec for your needs.

Can I compress WebM videos?

Absolutely! Upload your WebM video, adjust compression settings, and our tool will process it locally in your browser. You can reduce file size significantly without quality loss.

Is WebM compatible with my device?

Good on Chrome/Firefox, limited on Apple devices. Royalty-free and open source.

What are the disadvantages of WebM?

Limited compatibility on Apple devices (no Safari support); Not supported on many TVs and game consoles; Slower encoding than MP4/H.264; Fewer hardware decoders available. Despite these limitations, WebM remains royalty-free and open source.

Related Formats

MKVMP4MOV