Paste your SRT content to check each line against standard reading speed and flag lines that are too fast or too slow.
If subtitles appear and disappear faster than a viewer can read them, they become useless — or worse, distracting. This tool analyzes each cue in your SRT file and flags lines that are too fast (over ~20 characters per second) or unnecessarily slow, based on standard subtitle reading speed guidelines.
Step 1 — Paste your SRT content.
Step 2 — Click Check Reading Speed.
Step 3 — Review flagged lines and adjust timing or shorten text as needed.
Cramming too much text into a short cue. Break long lines into multiple cues with the Subtitle Splitter tool instead.
Ignoring very short display durations. Cues shown for less than 1 second are hard to read regardless of text length — extend the duration when possible.
Roughly 12-17 characters per second is comfortable for most viewers; above 20 characters per second is generally considered too fast.
Either shorten the text, or extend the cue's display duration if the video timing allows it.