Your files stay on your device
Resize MP4 video
Change MP4 video size to a preset or your own width and height, in your browser.
Drop your MP4 files here
or click to browse from your device
Supports: MP4
Most MP4 videos can't be resized here yet. This site re-saves WebM and MKV videos without quality loss, though some newer VP9 WebM files can't be re-saved yet. Convert it to WebM first, then come back.
Paste, drop, or type to begin. Everything stays on this device.