🔒 100% in your browser · No upload
Compress MP4 online — free & private
Shrink large MP4 files right in your browser. Pick a target size and ClipSqueeze re-encodes with H.264 to hit it — no upload, no account, no quality surprises.
⚡ Multi-thread · 4 cores🔒 100% in browser⏳ Loading engine…
✓Optimized H.264 encoding tuned for MP4 output.
✓Smart Auto mode picks resolution and bitrate for you.
✓100% private — your video is processed in your browser and never uploaded.
✓Free forever, no watermark, no signup, no file-count limit.
Questions
Does compressing an MP4 lose quality?
Some, but Smart Auto balances size and quality and shows a quality score before you start. For most sharing the result looks great.
Is there a file-size limit?
Around 1 GB on desktop, less on mobile, because everything runs in your browser's memory.