Drop video here or click to upload
Supports MP4, MOV, WebM | Max 500MB
Videos are compressed entirely in your browser. Nothing is uploaded to any server.
Choose from fast, balanced, or high quality modes based on your needs.
See original and compressed file sizes side by side with savings percentage.
No limits, no watermarks, no signup required. Compress unlimited videos.
Compress video online free with FreeToolBox — reduce the file size of MP4, MOV, WebM, and other video formats directly in your browser without installing software. Large video files are slow to upload, share, and stream. Our Video Compressor uses FFmpeg.wasm to reduce video bitrate or resolution, significantly shrinking file sizes while maintaining acceptable quality. It's ideal for compressing videos before uploading to social media, email, or a website.
All compression happens locally in your browser using WebAssembly — your video files are never uploaded to any server. This is especially important for private or sensitive video content. Completely free, no watermarks, no account required.
Typical reduction ranges from 30% to 80% depending on the original video's bitrate and target quality setting. High-bitrate footage like 4K smartphone videos can be compressed dramatically with minimal visible quality loss.
Video compression involves processing thousands of frames and running complex encoding algorithms. FFmpeg.wasm runs in the browser's single thread without GPU acceleration, so longer videos take more time.
Input: MP4, MOV, WebM, AVI, MKV, and other common formats. Output: MP4 (H.264) for maximum compatibility.
No. FFmpeg.wasm runs entirely in your browser using WebAssembly. Your video never leaves your device and is never uploaded to any server.