Vertical video layout tool
YouTube Shorts Subtitle Safe Zone
Test a caption line inside a vertical Shorts frame before export. The overlay highlights interface-heavy edges so subtitles can stay visible around titles, controls and engagement buttons.
Start with 3 free minutes
Create Captions Designed for Short-Form Video
Upload your video to CapsAI, generate editable captions, and check their placement with the safe-zone tool.
Tool workspace
No account required · processed locally
Placement guide
Keep essential caption text inside the dashed central area. The tinted edges represent interface-heavy regions that may cover subtitles on some devices.
This is a conservative preview, not an official fixed template. Platform controls can move across app versions and devices.
Three steps
How this tool works
- 1
Enter the caption you plan to display.
- 2
Optionally add a background image from your device.
- 3
Position final captions within the central guide.
Useful for
Common workflows
- YouTube Shorts caption styling
- 9:16 title-safe reviews
- Mobile-first export checks
What it checks
Focused, transparent output
- Bottom navigation clearance
- Right-side action clearance
- Top metadata clearance
Questions
Frequently asked questions
Is the safe zone an official fixed YouTube template?
No. YouTube UI can vary by device and experiment; this is a conservative planning guide.
Does the tool edit my video?
No. It provides a visual reference for placement in your editor.
Should captions always stay on one line?
Not necessarily. Keep lines short and verify that multiple lines remain within the guide.