Drop a Short or a frame and see where the title, channel, buttons and top bar cover it — scrub through the whole video. Free, no login.
Keep text, faces and anything that matters inside the green safe area. The platforms don’t publish exact pixels, so the overlays are close, not exact.
The part of a 1080 × 1920 Short that the Shorts player doesn't cover: clear of the title, channel and sound at the bottom, the like, dislike, comment and share buttons on the right, and the search and camera bar at the top. YouTube doesn't publish exact pixels, so the overlays here are close, not exact.
Yes. Drop the video file and scrub through it with the overlays on — the checker plays it in a 9:16 box, so you can stop on any frame where text or a face appears.
In the middle band, with the hook text in the upper half — the title block takes the bottom quarter and the buttons the right edge. The green box is the safe area.
No. Everything runs in your browser. Nothing is sent to Hookova.
Yes — tick them under the drop area to see all three at once, which is the quickest way to place text that works when you post the same video everywhere.