Video Compressor
Reduce the file size of your MP4 videos by adjusting quality and resolution. Uses FFmpeg running directly in your browser via WebAssembly — your video never leaves your device. Perfect for sharing via email, messaging apps, or social media.
Drag & drop a file here
or browse to select
Accepts: MP4, MOV, AVI, WebM, MKV → Compressed MP4
How to convert mp4, mov, avi, webm, mkv to Compressed MP4
Select a file
Drag & drop or click to browse. Accepts MP4, MOV, AVI, WebM, MKV formats.
Convert
Click the convert button. Processing happens instantly in your browser.
Download or Share
Download locally or share via a secure EveryTransfer link in one click.
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Video Compressor — frequently asked questions
How does video compression work here?
FFmpeg re-encodes your video in the browser with a more efficient bitrate (and optionally lower resolution), typically cutting file size by 40–70% while keeping the video watchable.
Is my video uploaded while compressing?
No. Everything runs locally via WebAssembly. The video never leaves your device — important for private or client footage.
How long does compression take?
It depends on your device and the video length — roughly real-time to 2× on a modern laptop. A 5-minute clip usually takes a few minutes.
Will the quality be acceptable?
For sharing, messaging, and web use, yes — compression targets visually similar output at a fraction of the size. Keep the original for editing or archival.
Need to share your converted files?
Send any file securely with a download link — password protection, analytics, and expiry built in.
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