Compress a video without uploading it
Make a large clip small enough to send. Your browser reads the video from your disk, rewrites it smaller, and hands the new file straight back to you.
How to compress a video in three steps
Choose your video
Drag it onto the page or browse from your desktop or phone. All the common video formats are accepted.
Pick how much smaller
Choose a level or move the slider and the estimated result updates as you go. Nothing is written until you press the button.
Save the smaller file
Your browser saves the compressed video straight to your device. The original stays exactly where it was.
What happens to your file
It never leaves the tab
Compressing a video usually means sending it to somebody else's computer and waiting for a smaller one to come back. Here the work happens in the page you are already looking at. Your browser opens the file, the tool rewrites it, and the browser hands you the result.
- Opened from your disk by your browser — not sent anywhere first.
- Held in the tab while the tool works, then dropped.
- Saved to your device by your browser, not by a link to a server.
- Closing the tab clears the working copy completely.
- No account, so no file is ever attached to an identity.
- Nothing is recorded about what you compressed.
Why not an upload site
An upload-based compressor is a form that posts your video to someone else's machine. Take that step out and a lot of small annoyances disappear with it.
A typical upload site
This tool
Formats & limits
- Input formats
- MP4, MOV, MKV, WebM, AVI and more
- Output formats
- MP4, WebM, MOV
- Compression levels
- 15% to 85% smaller
- Maximum file size
- Set by your device, not by a plan
- Files per run
- One at a time
- Sign-up required
- None
A note on quality
Compression always trades a little detail for size, and the level you pick decides how much. Balanced is where most clips stop looking different. If the source is already small, the tool will tell you rather than make the file bigger for no reason.
Questions
Is my video uploaded anywhere?
No. Your browser reads the video from your disk and the tool works on it in the same tab. You can watch this yourself: open your browser's network panel before you drop a file and see it stay quiet.
Will compressing make my video look blurry?
At the Balanced level most clips are hard to tell apart from the original at normal viewing size. Push towards maximum savings and you will start to see softening, particularly in fast motion. The slider exists so you can decide for yourself rather than accept a default.
Is there a file size limit?
Not one we set. What you can compress depends on your own device and how much room your browser has to work in. Very large video is easier on a desktop than a phone, and a long film will take a while.
Can I compress a video on my phone?
Yes. It works in Safari on iPhone, Chrome on Android, and all current desktop browsers. Shorter clips are the comfortable range on a phone.
Why does a long video take so long?
Your device is doing the work, so a two-hour film takes far longer than a thirty-second clip. Nothing is happening over the network during that time, and you can cancel at any point.