Subtitle CPS Checker
Measures reading speed (characters per second) for every cue in SRT and VTT files. Runs in your browser.
What it shows
A table with the start time, duration, character count, and resulting CPS for each cue. Click a column heading to sort. Cues above your threshold are highlighted.
Thresholds
Adult content is usually capped at 21 characters per second and children’s content at 17, following common streaming platform guidelines. Pick a preset or type a custom value; tags and whitespace are not counted.
CSV export
The download button saves the full table as CSV, including cues within the limit, so you can review the whole file in a spreadsheet.
Privacy
The file is parsed locally in your browser. Nothing is uploaded.