Compress Video
Make large videos small enough to share or upload, without adding a watermark. Free, private, and right in your browser.
Drop a video here, or browse
MP4, MOV, WebM, MKV · compressed on your device, never uploaded
The first run downloads a one-time video engine (~30 MB) to your browser. Compression is CPU-heavy and runs entirely on your device, so longer or larger videos take a while.
How to compress a video
- Drop your video into the box above.
- Pick a compression level and (optionally) a smaller resolution.
- Click Compress and wait — the first run loads the video engine.
- Preview the result and download it.
Frequently asked questions
- Is my video uploaded to a server?
- No. The video is compressed entirely inside your browser using an in-browser video engine, so your file never leaves your device.
- Why is the first run slow to start?
- The first time, your browser downloads a one-time video engine (about 30 MB). After that it's cached. Compression itself is CPU-heavy and runs on your device, so longer videos take longer.
- Is there a watermark?
- No watermark, no branding, and no sign-up — the output is just your compressed video.
- How do I make the file as small as possible?
- Pick the Strong compression level and lower the resolution to 720p or 480p. The result shows how much smaller the file got.