Video Compressor
Compress video files by adjusting quality (CRF) and resolution. See before and after file sizes. Powered by ffmpeg.wasm in your browser.
Drop a video file here or click to upload
video/*
Compression Settings
28
18 — Best quality (larger file)51 — Smallest file (lowest quality)
How it works
- 1.Drop or select any video file (MP4, MOV, MKV, WebM, AVI, etc.)
- 2.Adjust the CRF slider — lower values preserve more quality, higher values shrink the file further.
- 3.Optionally select a lower output resolution to reduce file size even more.
- 4.Click Compress — FFmpeg runs entirely in your browser; your video is never uploaded.
- 5.The compressed MP4 downloads automatically. Review the before/after size comparison above.