Free tools / Resize for Reels (9:16)
Cropping a landscape video to 9:16 usually chops the speaker half out of frame. This tool tracks the main face and moves the crop with it — like a camera operator following the subject — then exports a Reels-ready 1080×1920 MP4. All on your device.
Drop in a landscape (or square) video.
AI finds the main face and follows it as the frame is cropped to 9:16.
Download a vertical MP4 sized for Reels, TikTok, and Shorts.
Instead of blindly cropping the center of the frame, the tool detects where the main face is across the whole video and glides the crop window to follow it — so a speaker who moves or sits off-center stays in the shot.
Then it falls back to a clean center crop automatically — you'll still get a properly sized 9:16 video.
The face detection runs entirely on your device — inside your browser, using an on-device model. The video is never uploaded, to us or anyone.
All three want 9:16 vertical — 1080×1920 is the standard. That's exactly what this exports. For 4:5 and 1:1 variants plus captions, the full Vairal editor does all of it.
Drop one long video into Vairal and AI finds the most viral moments, cuts each into a captioned 9:16 short, and polishes it — in 40 languages, free to start.
Try Vairal free