Compress 4K videos to reduce file sizes dramatically. 4K footage is beautiful but creates enormous files that are difficult to store and share.
Percentage is applied to the original file size.
4K videos are 3840x2160 resolution, typically encoded in H.264 or H.265. File sizes range from 500MB to several GB depending on bitrate and length.
Your videos are processed entirely in your browser using WebCodecs. No uploads, no cloud processing, no privacy concerns. Your content stays on your device.
4K videos are 3840x2160 resolution, typically encoded in H.264 or H.265. File sizes range from 500MB to several GB depending on bitrate and length. This high quality is great for capture, but creates unnecessarily large files for sharing and storage. Compression can reduce size by 60-80% without noticeable quality loss.
With smart compression settings, quality loss is minimal. Most viewers won't notice the difference, especially when viewing on phones or tablets. The key is choosing the right resolution and bitrate for your intended use.
We recommend MP4 with H.265 codec. This provides excellent compression and works on virtually all devices.
Yes! This tool works in mobile browsers (Safari on iPhone, Chrome on Android). You can compress videos right on your phone without uploading them anywhere.
Typically you can reduce file size by 60-80% with minimal visible quality loss. Downscaling to 1080p often provides the best balance.