Compress Video Online
Reduce your video's size to send it in a messenger or upload it wherever you need, with three compression levels that trade quality for size. It all runs in your browser.
Drag a file here or click to select
MP4, MOV, WebM, MKV. The file stays on your device
Compress video in the browser, with the file staying put
The video is read from disk, decoded, resized and written back out as MP4 with H.264 video and AAC audio, all inside the browser tab on your own machine. Whatever the source container was, MP4, MOV, MKV or WebM, the result plays on nearly any device.
What the three levels change
Strong caps the picture at 480p and produces the smallest file. Medium caps it at 720p, the setting most people want for messengers and email, and Light caps it at 1080p and keeps the most detail. All three lower the bitrate as well as the resolution. None of them ever enlarge a video, so a 720p clip fed to Light stays 720p and is only re-encoded. When the job finishes the page shows the new size against the original, which is how you judge the trade.
How much you can expect to save
Compression gains come from whatever slack the source left behind. Footage straight off a phone camera is recorded at a generous bitrate and typically loses 70 to 90 percent of its size at the Medium level with little visible change. A clip that has already been exported from an editor, or pulled down from a social platform, has been squeezed once already and may only give up a fifth. Repeat passes over the same file keep shrinking it, but each one bakes in more blocking around edges and motion.
Cut first, then compress
Length costs more than quality does. Removing 30 seconds of dead air from a two minute clip takes a third off the size before a single frame is re-encoded, so it is worth running the video trimmer first and compressing what is left. If you only need the sound, video to MP3 is a far bigger saving than any compression level. And if the output has to land in a specific container rather than MP4, the video converter handles WebM and GIF.
Frequently asked questions
How do I compress a video without losing too much quality?+
Start with Light, which caps the picture at 1080p and keeps most of the detail. If the file is still too big for what you need, step down to Medium at 720p. The page reports the finished size next to the original, so you can try a level, look at the number, and redo it at a different setting.
How much smaller will my file actually get?+
It depends entirely on the source. A phone recording straight from the camera is barely compressed and often drops by 70 to 90 percent at the Medium level. A clip already exported by an editor, or one downloaded from a social platform, has had most of that removed already and may only shed a fifth.
What resolution does each level produce?+
Strong caps height at 480p, Medium at 720p and Light at 1080p. None of them ever upscale: a 720p source stays 720p even on the Light setting. Output is always MP4 with H.264 video and AAC audio, which plays on essentially any device.
Why does compressing take so much longer than trimming?+
Trimming copies existing frames. Compression decodes every frame, resizes it and encodes it again, so the work scales with the length and the resolution of the clip rather than with the size of the cut. A one minute 4K clip takes noticeably longer than a one minute 720p one.
Is there a file size limit?+
Files over 2 GB are refused, since a browser tab cannot hold them. Above 500 MB on a computer, or 300 MB on a phone, the page warns you before starting, because that is where a tab tends to run out of memory. The real constraint is your machine, not an upload quota.
Is it free, and are there watermarks?+
It's free, with no watermark and no limit on how many files you run. The video never leaves your device, so there is nothing for us to store or bill for.