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Reduce video file sizes quickly without uploading. Adjust compression presets, cap resolution, and save bandwidth locally.
Supports MP4, MOV, WebM, and MKV files. Fast browser-only processing with zero uploads.
Choose or drop your video file (MP4, MOV, WebM, MKV).
Pick 'Small File' for maximum compression or 'Balanced' for great quality with reduced size.
Process the video locally and download the compressed WebM file with detailed size comparison stats.
Compression depends on your source resolution, bitrate, and scene motion. Choosing the 'Small File' preset or downscaling from 1080p to 720p often cuts file size by 40% to 70%.
Video compression involves balancing bitrate and visual quality. The 'Balanced' preset retains high perceptual quality while significantly reducing unnecessary bits.
Yes. ImgZero performs all processing in your browser with WebCodecs. No video bytes or personal data are ever uploaded to any server.
Your files stay on your machine. No server uploads and no file-content tracking.