polyshA little tool. A clearer workflow.
Free Subtitle Line Length Checker
Use the free subtitle line length checker with SRT or WebVTT captions. Your files stay in your browser.
✓ Runs in your browser✓ No uploads✓ No account required
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How to use Subtitle Line Length Checker
- Paste subtitle text or choose a local subtitle file.
- Adjust the text or timing controls, process your captions, then download the result.
Know your result
Text-based SRT and VTT processing. Keep a copy of your source file. Advanced VTT styling, regions, and positioning may be normalized or omitted during conversion.
Files and pasted content are processed on your device. Polysh does not receive your input through these tools.