Compress Video.
Reduce video file size by re-encoding with adjustable quality.
Files never leave your device
Local processing
Conversions happen in your browser. Nothing is uploaded.
Instant results
Native browser APIs mean no server queue, no waiting room.
No account needed
Open, drop, convert. No sign-up, no email, no friction.
Frequently asked questions
What's CRF?
Constant Rate Factor controls quality vs size. Lower = better quality, bigger file. CRF 23 is visually similar to original.
Why is it slow?
Browser video transcoding is 3-10x slower than native ffmpeg. A 2-minute 1080p clip might take 1-2 minutes.
Will the output play everywhere?
Yes. H.264 in MP4 — playable on all modern devices.
Are my files really not uploaded?
Correct. Every conversion in this tool runs in your browser using JavaScript and the local file APIs. There is no server-side processing, no file upload, no temporary storage, and no log of what you converted. You can verify this by opening your browser's network tab while converting — the only traffic is loading the page itself.
Do I need an account or to install anything?
No. Open the page, drop your file, download the result. No signup, no email, no extension, no app.
Is there a file-size limit?
Not from us. The practical limit is your device's memory — browser tabs typically handle files in the hundreds of megabytes range without issues. Very large files may take longer to process on phones than on laptops.