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Social Media Video Resizer
Fit videos to portrait, square or landscape frames using crop, padding or preserved proportions.
Files stay on your device. No uploads.Local processing. Maximum 80 MB, 180 seconds and 1920×1080 pixels (or equivalent portrait dimensions). Native export depends on browser codec support. Video export runs in real time: keep this tab visible. MP4, MOV and WebM containers are accepted only when this browser can decode their contents.
How to use Social Media Video Resizer
- Choose a video and one of the 9:16, 1:1, 4:5 or 16:9 formats.
- Choose crop to fill, fit with black margins, or preserve the original proportions without a social frame.
- Set the maximum side and quality, export and review the framing.
Formats and limitations
Cropping removes content outside the selected frame; padding adds black margins. Preserve mode retains the source aspect ratio. Social services may apply their own encoding and upload limits.
Privacy and temporary data
Canvas framing and encoding happen on your device without uploading the source.