Compress Video Online

About compressing video

Video compression re-encodes your footage so it takes up less space. Instead of asking you to pick technical settings, this tool works from the answer you actually care about: how big the finished file should be. Enter a target size in MB, or say how much smaller you want the video to be, and the rest is worked out for you.

Reducing video file size

Large files are usually a problem because of a limit somewhere else — an email attachment cap, an upload form, a messaging app, or simply space on a phone. Because you can name the exact size you need, you can compress a video to fit under a 25 MB or 100 MB limit on the first try rather than guessing.

Compressing MP4 and MOV files

MP4 files from cameras, phones and screen recorders and MOV files from Apple devices are both supported, along with WebM, AVI, MKV and M4V. Whatever you start with, the result is a widely compatible MP4 that plays on phones, computers, browsers and social platforms without extra software. Your picture shape, orientation and sound stay as they were, and the audio remains in sync.

Choosing a target file size

Longer videos and higher resolutions need more space to look good, so the same 20 MB target is generous for a ten-second clip and very tight for a five-minute one. This tool reads the length and resolution of your video and tells you when a target is likely to look poor, along with a suggested minimum for that specific file. Your request is never changed behind your back — the choice stays yours.

Why compression affects quality

Making a file smaller means storing less detail per frame. Modest reductions are usually invisible. Push much further and fine detail softens, fast motion smears, and flat areas such as skies can look blocky. If the result looks worse than you hoped, try a larger target size — or reduce the video by a smaller percentage — and run it again.

Is it private?

Compression happens on your own device. Your video is never uploaded to a server, nothing is stored, and the compressed copy exists only until you close the page or download it.