Video Compressor Online (Reduce Video & MP4 File Size)

Original videos and converted results are not sent to the MISCLAND server. Encoding uses your device's CPU and RAM; only about 10MB of FFmpeg WASM engine assets are downloaded from the server on first use and stored in the browser cache.

Start with Balanced Quality and Original or 1080p resolution first and check the resulting capacity. You can reduce unnecessary picture quality loss by lowering the quality priority only when you need to reduce it further or adjusting it step by step to 720p or 480p.

If universal playback compatibility is important, MP4 is your best bet. WebM is also an option when smaller capacity is a priority in modern web page-centric environments, and check for playback support on actual devices.

The bitrate is calculated based on the video length and compressed close to the target MB, but the results may vary slightly due to container overhead, audio, and video complexity. If there is an attachment limit, enter a value that is comfortably lower than the limit.