Subtitle Workshop Classic

Workshop has a built-in error checker.

Suddenly, the video glitched. A flash of purple static cut through the jazz club's smoke. In the text box, Elias typed what he heard, but the words didn't match the audio. As he hit subtitle workshop classic

Use the Tools -> Information and Errors ( Ctrl + I ) function. It automatically finds overlapping lines or subtitles that are too short to read. Workshop has a built-in error checker