WEBM Compressor
Shrink WEBM files without wrecking them: free, in your browser, gone within the hour.
One file at a time for now
Batch processing isn't available yet: drop files one by one, or use the Merger to join them.
Try another file- Free, no signup
- No watermark, ever
- Files auto-delete in 1 hour
- Nothing to install
WEBM is video the way browsers like it: open, royalty-free and built to stream. A Matroska-based container restricted to VP8/VP9/AV1 video with Vorbis or Opus audio.
- Born
- 2010, Google, out of its VP8 acquisition
- Type
- video · container
- Typical size
- often smaller than the equivalent MP4: VP9 and AV1 squeeze harder than H.264
- Plays on
- Every modern browser; hit-and-miss in editing apps and on Apple hardware.
- Fun fact
- Google made WEBM royalty-free specifically so the web's <video> tag could work without patent fees.
What compressing WEBM actually does
Compressing WEBM means re-encoding the video inside with a modern codec at a quality you choose: low, medium or high. Camera footage typically gives up 30–70% of its size before quality visibly suffers, and screen recordings squeeze even harder. WEBM runs often smaller than the equivalent MP4: VP9 and AV1 squeeze harder than H.264, so there's usually plenty to give.
How to compress a WEBM file
-
1
Drop your WEBM into the compressor above.
-
2
Pick a quality level: medium is the sweet spot most people can't tell from the original.
-
3
Download the smaller file. WEBM typically runs often smaller than the equivalent MP4: VP9 and AV1 squeeze harder than H.264, so the savings are real.
Questions people ask
How much smaller will my WEBM get?
It depends on how generously it was encoded: WEBM typically runs often smaller than the equivalent MP4: VP9 and AV1 squeeze harder than H.264, and most files give up 30–70% at the medium preset before quality visibly suffers.
Will I lose quality working with WEBM here?
Where possible Flippy copies streams without re-encoding; when a re-encode is unavoidable it happens once, at quality matched to your WEBM.
Is this WEBM compressor really free?
Yes: free for everyday use with no daily cap, no signup, and your files delete themselves from our servers within an hour.