Video Compression

Compress video files up to 500 MB with full control over format, resolution, quality, and audio bitrate. Processing runs entirely in your browser using FFmpeg.wasm — no files are uploaded.

Browser-based video compression

Maximum input size is 500 MB. Processing large videos can take several minutes and is limited by your device memory and CPU. All work stays on your device.

Compression Preferences

Output Format

Resolution

Quality Mode

CRF (recommended)Bitrate

CRF Quality (23) — lower = better

Higher qualitySmaller file

Audio Bitrate

Drop a video here or click to browse

Maximum size 500 MB. Supported: MP4, WebM, MOV, AVI, MKV and most common formats.

Configure the preferences above, then drop or select a video file (max 500 MB). The first run will download the compression engine (~25 MB) and cache it for future use.