💬 Subtitle Safe Zone Checker

What is Subtitle Safe Zone Checker?

Subtitle Safe Zone Checker verifies your subtitles stay in the readable lower third without being hidden by platform UI. Enter your frame size and subtitle height to see the recommended safe region for captions.

How to Use Subtitle Safe Zone Checker

1. Enter your video frame dimensions
2. Set your subtitle text size
3. Review the highlighted safe region
4. Adjust subtitle placement into the zone

Why Use Our Subtitle Safe Zone Checker?

• Finds the safe region for subtitles on any frame
• Checks the bottom margin where UI appears
• Recommends a subtitle height that reads well
• Private and instant

Common Use Cases

• Positioning captions on short-form video
• Avoiding overlap with the 'Read more' overlay
• Standardizing subtitle placement across a channel

Worked Example

On a 1080×1920 frame with the default 12% bottom gap, the tool places the subtitle band between y=1536 and y=1690 — the lower third, but safely above the 8% caption zone where 'Read more' and UI overlays appear. Keep your caption text roughly 150 px tall at this size and centered within that band. Run the same check on a 9:16 story template so your last line never gets clipped by the bottom UI strip on any phone.

Frequently Asked Questions

• Where should subtitles sit?▾
  Keep subtitles in the lower third but above the bottom 10–15% of the frame, where platform UI and the 'Read more' caption overlay appear.
• What font size is safe?▾
  A subtitle height of about 4–6% of the frame width reads well on mobile. This tool shows the recommended safe region.
• What is the difference between the subtitle zone and the safe zone?▾
  The safe zone protects the whole frame from top and side UI. The subtitle zone is specifically the bottom band where captions read comfortably without colliding with the 'Read more' overlay that platforms render over the very bottom of the video.
• What font size should subtitles be?▾
  A good rule is about 4–6% of the frame width in caption height — around 50–70 px on a 1080 px wide canvas. Big enough to read on a phone, small enough not to cover the subject.