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Video Compressor
Reduce MP4/MOV size significantly without losing quality. 100% Client-Side.
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Shrink video files in your browser — MP4, MOV, WebM, and more. No uploads, no signup, no watermark, no file-count limit. Typical results: 50-80% smaller at the same visible quality, which means videos that actually send through WhatsApp, Gmail, and Slack without hitting size limits. Uses the browser's FFmpeg build, so compression runs locally on your device.
Why local video compression matters
Most free online video compressors cap you at 100MB, upload the full file, re-encode on their server, and slap a watermark on the output — or lock the good settings behind a paid plan. This tool runs FFmpeg in your browser, which means no size cap beyond your device memory, no upload time, no watermark, and nothing sent to anyone's server. The trade-off is that encoding happens on your device, so a 10-minute 4K video takes longer on a laptop than on a cloud GPU. For most phone-sized clips it is fast.
Quality vs size trade-offs
The tool exposes a CRF (constant-quality) slider. CRF 23 is the default — visually indistinguishable from the source for most content, typically 50-70% smaller than a phone's native encode. CRF 28 drops to about 20-30% of original size with mild visible compression in high-motion scenes — good for sharing over WhatsApp or putting behind a paywall preview. Go lower than CRF 18 and you start to preserve every artifact of the original, which is rarely useful.
Resolution, frame rate, and format
Beyond quality, the other big lever is resolution. A 4K phone video downscaled to 1080p is dramatically smaller and looks identical on social feeds. Frame rate: drop 60fps to 30fps for further savings on anything that is not sports or slow-mo. Format: MP4 (H.264) is safest; WebM (VP9) is smaller but not every player supports it. For sharing, stick with MP4. For the web, WebM saves bandwidth if your audience is on modern browsers.
Common ways people use it
Sending videos over WhatsApp, Telegram, Gmail
Shrink a 100MB phone clip to 20MB so it clears messaging size limits without the quality hit of forwarding a re-recorded version.
Uploading to social without re-encoding hits
Social platforms always re-encode. Uploading an already-compressed MP4 lets you control the first pass so the final result looks better.
Web and landing page autoplay videos
Hero background videos on sites need to be small to load fast. Compress to under 3MB for 10-15 seconds and autoplay feels instant.
Clearing phone storage
4K videos hog gigabytes. Compress to 1080p at CRF 23 and reclaim ~70% of the space with no visible change on most screens.
Frequently asked questions
How It Works
Professional results in 3 simple steps.
1
Upload
Select your photos or videos. Files processed locally.
2
Process
Our powerful engine optimizes your files instantly.
3
Download
Get your optimized files immediately.