🎬 Video Tool

Video Compressor Online Free

Reduce video file size without losing quality. Choose your compression level. Works with MP4, MOV, AVI, WebM. No upload to any server — 100% private.

⚙️ Powered by FFmpeg.wasm — full video engine in your browser. Loads once (~30MB) from CDN. Note: Video compression is CPU-intensive and may take several minutes for large files.
Compression Level
🟢
Light
~20-30% smaller
Near original quality
🟡
Medium
~40-60% smaller
Good quality
🟠
High
~60-75% smaller
Some quality loss
🔴
Maximum
~75-85% smaller
Noticeable loss
📦
Drop video file here or click to browse
MP4 · MOV · AVI · WebM · MKV · Max 500MB
Processing…

About Video Compressor

This free online video compressor uses FFmpeg.wasm to re-encode your video with the H.264 codec at your chosen quality level (CRF value). Higher compression levels use a higher CRF value, which reduces quality but produces significantly smaller files.

CRF explained: CRF (Constant Rate Factor) is a quality measure for H.264 encoding. Lower = better quality, larger file. CRF 23 is near-lossless; CRF 28 is the default balance; CRF 33+ is heavily compressed.

Note: Video compression is very CPU-intensive. A 100MB video may take 2-5 minutes to process in the browser. For very large files, a dedicated app like HandBrake may be faster.

Updated: May 2025 · Works on Chrome, Firefox, Edge · Mobile friendly

Frequently Asked Questions

How long will compression take?+
Browser-based video compression is slower than native apps. A 100MB video typically takes 2-5 minutes on a modern laptop. Larger files or maximum compression take longer.
Which compression level should I choose?+
Medium is the best starting point — it typically halves the file size with no visible quality loss. Use High or Maximum when you need to meet a strict file size limit.
What format is the output?+
Output is always MP4 (H.264 video + AAC audio) — the most universally compatible video format.
Is there a file size limit?+
Up to 500MB. The file is loaded into browser memory, so devices with limited RAM may struggle with very large files.
Done!