Compress a Video Online
Reduce the size of MP4, MOV, M4V, WebM, or MKV videos with local processing. Download the result only if it truly weighs less.
Processed in your browser · No registration required
Compress a Video Online: what you need to know
Videos recorded with phones and cameras can occupy too much space to send or save. Prisma Space allows you to re-encode a video with a chosen compression level from the browser.
You can prioritize a smaller file, a balance, or higher quality. The tool preserves the audio and compares the final size with the original: if the result doesn't weigh less, it doesn't offer a copy that degrades the file without saving space.
How to use this tool
- Select the video you want to compress.
- Choose between small file, balanced, or higher quality.
- Wait for the encoding to finish and download the result if its size has been reduced.
Common questions
Does my video get uploaded to a server?
Compression is designed to run locally in the browser or through native device encoding when available.
Will the video weight always be reduced?
No. If the new encoding doesn't achieve a smaller file, the tool informs of the result and preserves the original.