Resize Video for YouTube Shorts
Turn any footage into a proper 9:16 Short — crop to fill or fit with bars, processed on your device.
YouTube decides whether a video becomes a Short partly by its shape: vertical 9:16 video under three minutes gets the Shorts treatment — the dedicated feed, the swipe UI, the discovery boost. Upload a landscape clip and it stays a regular video, invisible to the Shorts audience.
This tool converts any footage to a clean 1080×1920 vertical MP4. Crop to fill zooms into the center for a native full-frame look; Fit with bars keeps the whole frame visible with black padding — the right choice for gameplay or anything with edge content. Everything processes in your browser with no upload.
How to resize video for youtube shorts online
- 1Drop your video into the box — a landscape clip, a gameplay recording, anything.
- 2Choose Crop to fill for a native look, or Fit with bars to keep the full frame.
- 3Click Resize Video and let it process.
- 4Download the 1080×1920 MP4 and upload it to YouTube — under 3 minutes becomes a Short automatically.
Frequently asked questions
What makes YouTube treat a video as a Short?
A vertical (or square) aspect ratio and a duration of three minutes or less. This tool handles the aspect ratio; keep the length under 3:00 — our trim tool cuts to length instantly if needed.
Should I crop to fill or fit with bars?
Crop to fill looks native and performs better for most footage, but trims the sides of landscape video. Fit with bars is right when edge content matters — gameplay HUDs, text, or wide scenes.
Can I reuse the same file for TikTok and Reels?
Yes — 1080×1920 H.264 MP4 is the exact spec for all three platforms. Make it once, post it everywhere.
Is my footage uploaded during processing?
No — the resize runs entirely in your browser via WebAssembly. Your video stays on your device until you upload it to YouTube yourself.
Related tools
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