Private video compression
Compress video privately in your browser.
Choose a video, reduce its file size, and download a smaller MP4 while the source file stays in this browser tab.
Compress video privately
Create a smaller MP4 without uploading the source video.
Your selected video is processed in this browser tab. It is not uploaded to a conversion server.
Ready.
Private compression means no upload
This page uses the local compression tool for people who care most about keeping the selected video off a conversion server.
Best settings and limits
Best first try
Start with Balanced and 720p. Use Smallest file and 480p when privacy matters but the output also needs to be much smaller.
When this may fail
Local processing still depends on your device memory and browser. Very large 4K files may fail, especially on mobile.
Privacy boundary
The selected video file stays on your device while the tool creates the output.
Frequently asked questions
What does private video compression mean here?
The selected source video is processed in the browser tab instead of being uploaded to a server for conversion.
Does my video get uploaded?
Your selected video file stays on your device while the tool creates the output.
Can private compression guarantee a target size?
No. Output size depends on duration, resolution, motion, codec, and the settings you choose.