Next steps: if text sits in a danger zone, reposition it — or if your source is landscape, reframe it first with the
Crop Video to Vertical tool. Once placement is safe, check your captions aren't flashing too fast with the
Caption Speed Checker.
Why safe zones matter more than they look
Every short-form platform draws its own interface on top of your video: a button stack down the right edge, the caption and username across the bottom, tabs or a search bar along the top. None of that is visible in your editor — your export looks perfectly clean — and then the app covers your carefully placed subtitle with a Share button. Viewers don't report this; they just miss the punchline and swipe. Respecting the safe zone is one of those invisible professionalism markers that separates polished accounts from frustrating ones.
This tool superimposes each platform's danger zones over your actual content inside a phone-sized preview. Images work for checking a single layout, but the video support is what catches the subtle failures: drop your full clip in, press play or drag the scrubber, and watch whether your text stays clear of the red areas for the entire runtime. Animated captions, moving lower-thirds and end-screen text are exactly the elements that drift into danger zones halfway through a clip. The opacity slider lets you dim the overlay to judge your composition underneath it.
One honest note: the zones are close approximations of current platform layouts. Exact positions shift slightly with device size, app version and caption length, and platforms redesign their UI periodically — so keep a small margin inside the clear area rather than pushing text right up against a red edge.
Frequently Asked Questions
What is a safe zone on TikTok, Reels or Shorts? ›
The safe zone is the part of the screen that is not covered by the app's own interface — the like/share buttons on the right, the caption and username at the bottom, and the tabs or search bar at the top. Text or key visuals placed outside the safe zone get hidden behind those UI elements when the video is viewed in the app.
Can I check safe zones on a whole video, not just a screenshot? ›
Yes. Drop a video file into the tool and it plays inside the phone preview with the safe-zone overlay on top. Use the play button and scrubber to move through the clip and confirm your captions and graphics stay clear of the red zones at every moment, not just in one frame.
Does this tool upload or save my images and videos? ›
No. Files are opened locally in your browser and never leave your device. Nothing is uploaded, stored or transmitted anywhere.
Why are the overlay zones red? ›
The red semi-transparent areas are danger zones — the regions where the platform draws its buttons, captions and other interface elements. Keep important text, faces and graphics out of the red areas and inside the clear space.
Are the safe zones exactly accurate for every phone? ›
They are close approximations of each platform's current layout on typical phones. Exact pixel positions vary slightly by device, app version and caption length, and platforms update their UI over time — so treat the red zones as a reliable guide with a small margin, not a pixel-perfect specification.
Where should I place captions in a vertical video? ›
The safest region is the middle band of the screen — roughly the central 60% vertically, keeping clear of the right edge where the button stack sits. Avoid the bottom quarter (caption and username area) and the very top (tabs and search).