Video Compression
Reduce video file size for email attachments or web sharing directly in your browser. Your files never leave your device – everything runs locally using WebAssembly.
How it works & privacy
1. Your files stay on your device
Videos are never uploaded or stored on any server. All processing is executed locally in your browser using WebAssembly (ffmpeg.wasm).
2. First run caches the converter module
On first use, the browser downloads the converter engine (~30 MB from cdn.jsdelivr.net), which is cached for future visits.
3. Processing speed depends on your hardware
Video encoding uses your device CPU. Longer videos or high-resolution files may take several minutes to process.
4. Smart bitrate calculation
When you specify a target size, our algorithm calculates the optimal video and audio bitrates to ensure the final file fits within your required limits.
This tool is intended for processing your own media files. Please respect copyright laws.
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