FREE VIDEO WORKFLOW TOOLS
Subtitle reading speed checker
Locate overlaps, ordering problems, long lines and fast captions using your own thresholds.
Free · no sign-up · runs in your browser. Your input is not uploaded or stored by this tool. Up to 1 MiB UTF-8 text / 5,000 plain-text cues.
How to use it
- Paste or open your plain subtitles.
- Choose maximum characters/second and characters/line for your audience.
- Review the cue numbers, timestamps and findings. Download the report, then edit your source file.
What to check
CPS includes spaces and punctuation, excludes line breaks and counts Unicode code points. These are adjustable review thresholds, not universal platform requirements. Simultaneous cues can be intentional; this checker does not hear the audio, judge the wording or repair files automatically.
Continue your video project
Your result is available above without registering. To organize a brief, script and source records in Topicut, start a project. Public video generation is not open yet.
Related free tools
Learn the terms in the video glossary, or follow a workflow guide.
Format references
Supported syntax is a deliberately limited plain-text subset. The full formats can carry features this tool refuses.
Topicut · updated October 28, 2026. These pages describe the actual tool limits; they do not promise search rankings or subtitle approval.