Resize Video
Resize a video to a smaller pixel width while preserving its aspect ratio.
Choose a video to begin. Your file stays in this browser.
Exports run in real time. Keep this tab visible; switching away cancels export. Output is re-encoded WebM, or MP4 when supported. Cuts are not frame-exact. Limit: 300 MB input; five minutes and 1920 × 1920 pixels per export. Audio preservation requires Web Audio support.
Use short clips in a current desktop Chrome or Edge browser for best compatibility. Input codecs depend on your browser. Video export is not lossless, guaranteed frame-exact, or a multitrack timeline editor.
How to use Resize Video
- Choose a video that your browser can play.
- Enter the desired width. Height is calculated from the original proportions.
- Start export and keep this tab visible, then review your downloaded file.
Local processing and output quality
Pixels are processed in this browser with no file upload or server conversion. Browser video recording may change timing, compression and quality. Video file extensions follow the format supported by the browser. Frame capture saves a PNG of the decoded frame.