How to use this preset
- Choose one source video.
- Pick the platform ratio and reposition the subject.
- Export a platform-ready MP4.
SOCIAL VIDEO RESIZER
Resize Once. Publish Everywhere.
Start with a 16:9 preset, then switch between YouTube, Shorts, TikTok, square and Instagram 4:5 formats.
Preset applied automatically: 16:9
✓ No upload✓ No account required✓ Start immediately after selecting a video
Drop your video hereMP4, MOV, WebM, WMV, and moreor● Nothing is uploaded
Your video stays private
The File API, WebCodecs and FFmpeg.wasm run in this browser. Your source video is never sent to our server.
MP4 · MOV · WebM · WMVRelated creator tools
Creator toolsEverything stays local
Compress videoOpen dedicated tool→Compress to 25MBOpen dedicated tool→Edit your YouTube videoOpen dedicated tool→Resize for ShortsOpen dedicated tool→01Truly local processingFile APIs, WebCodecs, and WebAssembly all run in your browser.
02Every feature is freeNo file-size limit, with up to 4K, batch, and advanced tools.
03No server copyNo video upload endpoint and no account required.