Subtitle Overlap Checker
Find overlapping subtitle cues and short gaps in an SRT or WebVTT file.
What is a subtitle overlap?
An overlap occurs when one cue starts before another cue has ended. This checker also flags gaps shorter than your selected minimum and reports the affected cue numbers.
Your result
A little clarity, right here.
Start with your own content or load the example. Your result will appear here.
Three simple steps
How to use Subtitle Overlap Checker
Paste your content or choose a supported file.
Adjust the options, then run the tool.
Review the result and copy or download it.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
Overlapping cues can be intentional for multiple speakers. This tool reports timing relationships without changing them.
Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.