Compress Video
Shrink video file size — pick quality and resolution, re-encoded in your browser
1. Choose a video
2. Compression options
In-browser re-encoding takes time proportional to length — videos under a few minutes work best.
3. Compress
Reduce video file size. Pick a compression strength (CRF) and a resolution cap, re-encode to H.264, and see the size change instantly. Everything runs in your browser.
What you can do
- ✓3 strength levels
- ✓Set a target size (like 25MB for email) — lands within ~±10%
- ✓Resolution cap (original·1280·854)
- ✓Before→after size comparison
- ✓MP4 (faststart) output
How to use
- 1Upload a video
- 2Pick strength and resolution
- 3Press Compress and download
Supported formats · MP4 · MOV · WebM · MKV → MP4
Shrink a video's file size. Choose a compression strength (CRF) and a resolution cap to re-encode with H.264, and it shows the size change versus the original right away. Everything runs in your browser, so the video is never sent to a server.
How to use it
- 1Select or drag in the video.
- 2Choose the compression strength and resolution cap.
- 3Check the reduced size and download.
When it comes in handy
For example, it helps when a video is over the attachment size limit for email or a messenger and you need to shrink it to send.
It's also good for making archive videos lighter to save storage space.
Tune with strength and resolution
A higher strength shrinks the file more, and a lower resolution cap fits a large video into a reasonable size. After converting, you can see exactly how much smaller it got.
Frequently asked questions
Can it hit an exact size like 25MB?+
Yes. Pick 'Target size' mode and set the size you need (like 25MB for email attachments) — the result lands within about ±10% of the target. If the target is too small for the video's length, it warns you upfront.
Is the video uploaded to a server?+
No. Compression runs inside your browser, so the video never leaves your device.
How much does quality drop?+
A stronger setting shrinks more but changes quality more. A moderate strength shrinks the file with little visible difference.
What format does it save?+
It saves as widely compatible H.264 MP4.
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