Is this video compressor free and private?

Yes. It is completely free with no sign-up, and every video is compressed right inside your browser — your file is never uploaded to any server, so it stays 100% private on your device.

Why does the first compression take a moment to start?

The tool downloads a small in-browser video converter (~30MB) once on your first run. After that it is cached, so future compressions start right away.

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Video Compressor

Shrink a video's file size in your browser.

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How to use the Video Compressor

1Drop in a video (MP4, WebM, or MOV) or click to browse for one.
2Drag the quality slider — a lower CRF keeps more quality, a higher CRF makes a smaller file (28 is a good balance).
3Click Compress, preview the result, and download your smaller compressed.mp4.

About the Video Compressor

Free, in-browser video compressor. Reduce MP4, WebM & MOV file size with an adjustable quality slider. No uploads, fully private — your video never leaves your device.

Part of our Audio & Video collection. Browse all tools.

Frequently asked questions

Is this video compressor free and private?: Yes. It is completely free with no sign-up, and every video is compressed right inside your browser — your file is never uploaded to any server, so it stays 100% private on your device.
Why does the first compression take a moment to start?: The tool downloads a small in-browser video converter (~30MB) once on your first run. After that it is cached, so future compressions start right away.