Free Online Video Compressor
Reduce video file size while minimizing quality loss. Files are never sent to a server.
Browser-based processing: Files are never uploaded — all processing runs locally in your browser. Files over 200 MB may take longer to compress. We recommend staying under 500 MB. Use a desktop for large files.
Drop your video file here
MP4, AVI, MOV, WebM, MKV supported · Max 500 MB recommended
Compression Complete!
Frequently Asked Questions
Q. What is CRF?
CRF (Constant Rate Factor) controls video compression quality. Lower values give better quality with larger files; higher values give smaller files with lower quality. 18–23 is high quality, 24–28 is standard, 29–35 is small file size.
Q. How much will the file size be reduced?
It depends on the original codec and content, but at CRF 26, you can generally expect a 40–60% reduction. Files that are already heavily compressed may see less reduction.
Q. Are files uploaded to a server?
No. All compression happens entirely in your browser. Your files are never sent to any external server.