Caption line-length check
SRT Character Limit Checker
Find subtitle lines that may be too wide for comfortable viewing. Choose a maximum character count and inspect every line without changing your original captions.
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Tool workspace
No account required · processed locally
Many teams review between 32 and 42 characters per line.
Three steps
How this tool works
- 1
Paste an SRT file into the checker.
- 2
Set your preferred characters-per-line limit.
- 3
Review flagged cue and line numbers.
Useful for
Common workflows
- Mobile caption QA
- Broadcast subtitle preparation
- Consistent visual line length
What it checks
Focused, transparent output
- Per-line character counts
- Custom threshold
- Exact cue and line references
Questions
Frequently asked questions
What character limit should subtitles use?
Many workflows target roughly 32 to 42 characters per line, but the right value depends on font, frame and platform.
Are spaces counted?
Yes. The displayed line length includes spaces and punctuation.
Does this rewrite long captions?
No. Use the related line-break optimizer when you want an automatically wrapped draft.