Compress Video
Convert Video files to Compressed Video instantly and privately. File Converts runs entirely in your browser, so your Video is never uploaded to any server.
Works offline after you have used it once: the engine downloads the first time and is kept. About 30 MB, once.
Compressing is the one video operation here that is always a re-encode. Changing containers can copy the existing track untouched; making a file smaller cannot, because the size is a property of how the video was encoded in the first place.
Three settings do the work, in roughly this order of effect. Resolution: 4K to 1080p removes three quarters of the pixels and is close to invisible on a phone. Frame rate: 60fps to 30fps halves the frames, which matters most on long clips. Bitrate: this is what actually determines file size, and pushing it too low is what produces blocky motion and smeared detail in fast scenes.
Trim before you compress. Removing thirty seconds of dead air at the start costs nothing in quality, where squeezing the same saving out of bitrate costs it everywhere. Compression runs in your browser through FFmpeg compiled to WebAssembly, so home video — the most personal thing most people convert — is never uploaded.
Best for
- Shrinking a video to fit an email or messaging size limit
- Reducing a clip for a school or work upload portal
- Saving storage or bandwidth on a long recording
Good to know
Reduces video file size by re-encoding at a lower bitrate/resolution — a smaller file at slightly lower quality. It runs on your device via FFmpeg (WebAssembly, ~30 MB), which downloads once on first use and is then cached. Large or long videos are limited by your device's memory, so very big files may be slow or need trimming first.
How to convert Video → Compressed Video
Drop your Video file into the converter above — it stays on your device.
Choose Compressed Video as the output. File Converts picks the smartest settings automatically.
Click Convert and download your Compressed Video file instantly.