Compress video online — free, no upload
Shrink a video's file size right in your browser. Nothing is uploaded — the file never leaves your device.
Need to trim or edit first? Trim a video or try the full screen recorder.
Shrink a video's file size right in your browser. Nothing is uploaded — the file never leaves your device.
Need to trim or edit first? Trim a video or try the full screen recorder.
Your browser decodes the video frame by frame, redraws it at the resolution you picked, and re-encodes it — the same technique desktop compression apps use, just running locally instead of on a server. That's also why nothing is ever uploaded: the whole pipeline is your device's CPU and the video codecs already built into your browser.
Some, unavoidably — that's how compression reduces file size. Picking a lower target resolution (e.g. 720p instead of 1080p) shrinks the file more but loses more detail. For most sharing purposes (email, Slack, messaging apps) 720p is a good balance.
No hard limit — it's bounded by your device's memory, not a server quota. Very large or long videos just take longer to process since everything happens locally in your browser.
MP4 (H.264) in Chrome and Edge, which plays everywhere without extra codecs. Firefox falls back to WebM.
No. The whole process — reading the file, re-encoding it, and producing the download — happens in your browser. Your video never leaves your device.