Compress 4K Video
4K clips are enormous — often hundreds of MB per minute. This tool re-encodes them to a far smaller size on your own device, so you skip uploading gigabytes to a server just to shrink a file.
Drag & drop a video here, or
Processed 100% in your browser — your file never leaves your device.
MB
Why 4K files are so large
4K footage records at very high bitrates (50–100+ Mbps), so a few minutes can be 1–2GB. For sharing, downscaling the bitrate (and optionally the resolution) cuts size dramatically while keeping it crisp on most screens.
Frequently asked questions
- Should I keep 4K or downscale to 1080p?
- If viewers watch on phones or in chat apps, 1080p at a lower bitrate looks identical and is far smaller. Keep 4K only when the destination genuinely displays it.
- Can my browser handle a 4K file?
- Yes for clips of reasonable length. Very long 4K videos are memory-heavy in-browser; trimming or processing in segments helps on lower-RAM machines.