Subtitle Line Length Checker
Find subtitle lines that exceed a character limit. Default limit is 42 characters per line — the common recommendation for readability.
Local processing only. Analysis runs on your device.
Input subtitle
Recommended limits
- 42 characters per line — widely used broadcast and streaming guideline.
- 32 characters per line — stricter standard for mobile-first contexts.
- Max 2 lines per cue — this tool does not enforce line count but the Line Counter will show it.
Why it matters
Long subtitle lines force viewers to read fast or miss text. Keeping lines short improves comprehension across devices, especially on phones held at arm's length.