Video Compressor
Compress and reduce video file size with CRF quality control — H.264 encoding, all in your browser
Video Compressor Online
Compress and reduce video file size with CRF quality control — H.264 encoding, all in your browser via FFmpeg.wasm. Reduce video size for email, WhatsApp, social media, and web uploads.
CRF quality guide
CRF 18 (high quality)
Near-lossless. File size ~2× larger than CRF 23. Good for archiving.
CRF 23 (default)
Balanced quality and size. The H.264 default — good for most use cases.
CRF 28 (smaller file)
Noticeable quality loss on detailed scenes. Good for messaging apps where size matters.
CRF 35+ (smallest file)
Heavy compression. Visible artifacts. Use only when file size is critical.
FAQ
What is CRF in video compression?
CRF (Constant Rate Factor) controls the quality-to-size tradeoff. Lower = better quality, larger file. Higher = smaller file, lower quality. CRF 23 is the H.264 default sweet spot.
How much can I reduce video file size?
Typical results: 50–80% size reduction with CRF 28. A 100 MB video often compresses to 20–50 MB depending on content complexity.
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