✳ FREE · NO UPLOAD
Subtitle checker
Check a subtitle file for the things that make captions hard to read: cues that flash past too fast, overlapping timings and lines too long for a phone screen.
Subtitle files are plain text, so this runs entirely in the page - no upload, no processing engine to load.
Worth knowing
- Characters per second above roughly 20 is widely treated as faster than comfortable reading; it is a guideline, not a standard.
- Line-length limits vary by platform and player, so the longest-line figure is reported rather than judged.
Koldflux generates and styles captions as part of its render pipeline.
Automate this in Koldflux