Compress MP4 files

Upload an MP4 file and shrink its size by re-encoding the video at a lower bitrate. Re-encoding long videos takes a while, so keep the tab open.

Quality

The everyday video diet

MP4s from phones and cameras are encoded generously; there is usually plenty of size to reclaim. This tool re-encodes the video at a lower bitrate locally, with no upload, watermark, or signup.

Typical triggers

A 25 MB email cap meeting a 200 MB clip, chat apps that mangle videos with their own crude compression (yours will look better), course platforms with per-file limits, and phone storage filling with 4K footage.

Frequently asked questions

Why does WhatsApp-style compression look worse than this?

Messaging apps optimize for speed and tiny sizes with fixed aggressive settings. Choosing your own moderate setting preserves far more quality per megabyte.

Does audio get compressed too?

The focus is video bitrate, which dominates file size; audio passes through sensibly and rarely needs attention.

Is the original file changed?

No, you download a new compressed copy; the source stays untouched.