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WEBM File Format

WebM Video category

WebM is Google’s royalty-free web video format (VP8/VP9 + Opus). It is small, streams beautifully, and every modern browser plays it natively.

Typical use: WebM delivers the best size-to-quality ratio for embedding video on websites without plugins.

About the WEBM format

WebM is Google's royalty-free video format for the web: a Matroska subset carrying VP8/VP9/AV1 video with Vorbis/Opus audio. YouTube serves most non-premium playback in VP9 WebM, and HTML5 `<video>` plays it natively in every modern browser — no licensing math required.

Efficiency is the selling point: VP9 and AV1 match or beat H.264/HEVC at the same quality for typical web content. Hardware decode is now widespread, though older Safari versions and some TVs remain the compatibility floor.

Strengths

  • ✓ Royalty-free codecs (VP9/AV1, Opus)
  • ✓ Native HTML5 video support
  • ✓ Efficient at web bitrates

Limitations

  • ✗ Weaker support on older Safari/TVs
  • ✗ Not the default for camera or editor workflows
Compression
VP9 / AV1 + Opus
Quality
Efficient modern codecs
Compatibility
All modern browsers
Best for
Web video and streaming

Convert WEBM to…

25 direct directions plus 46 workflows, sorted A–Z; 🔥 marks popular targets.

WEBM to 3G2 WEBM to 3GP WEBM to APNG WEBM to ASF WEBM to AVI Hot WEBM to DV WEBM to F4V WEBM to FLV WEBM to GIF Hot WEBM to H.264 WEBM to M2TS WEBM to M4V Hot WEBM to MKV Hot WEBM to MOV Hot WEBM to MP4 Hot WEBM to MPEG WEBM to MPEG1 WEBM to MPEG2 WEBM to MPEG4 WEBM to MPG WEBM to TS WEBM to VOB WEBM to WebP Hot WEBM to WMV WEBM to Y4M

Cross-engine workflows

WEBM to 7Z WEBM to AAC WEBM to AC3 WEBM to AIF WEBM to AIFF WEBM to ALAC WEBM to APK WEBM to AU WEBM to CAF WEBM to E-AC3 WEBM to F4A WEBM to F4B WEBM to FLAC WEBM to GSM WEBM to JAR WEBM to JFIF WEBM to JPE WEBM to JPEG WEBM to JPG WEBM to M4A WEBM to M4B WEBM to M4R WEBM to MP2 WEBM to MP3 WEBM to OGA WEBM to OGG WEBM to OPUS WEBM to PCM WEBM to PNG WEBM to PNG24 WEBM to PNG8 WEBM to TAR WEBM to TAR.BZ2 WEBM to TAR.GZ WEBM to TAR.XZ WEBM to TBZ2 WEBM to TGZ WEBM to TTA WEBM to TXZ WEBM to VOC WEBM to W64 WEBM to WAV WEBM to WAVPCM WEBM to WIM WEBM to WV WEBM to ZIP

Convert other files to WEBM…

3G2 to WEBM 3GP to WEBM ASF to WEBM AVI to WEBM Hot DivX to WEBM DV to WEBM F4V to WEBM FLV to WEBM GIF to WEBM Hot H.264 to WEBM M1V to WEBM M2TS to WEBM M2V to WEBM M4V to WEBM Hot MJPEG to WEBM MKV to WEBM Hot MOV to WEBM Hot MP4 to WEBM Hot MPEG to WEBM MPEG1 to WEBM MPEG2 to WEBM MPEG4 to WEBM MPG to WEBM MTS to WEBM MXF to WEBM OGV to WEBM RM to WEBM RMVB to WEBM TS to WEBM VOB to WEBM WMV to WEBM WTV to WEBM Xvid to WEBM Y4M to WEBM

Frequently asked questions

What is a WEBM file?

WebM is Google’s royalty-free web video format (VP8/VP9 + Opus). It is small, streams beautifully, and every modern browser plays it natively.

How do I convert WEBM files online?

Pick a target format from the "Convert WEBM to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.

Is it safe to convert WEBM files here?

Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.

Which formats can WEBM convert to?

This page lists all 71 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.