Subtitle Format Cleaner

Normalize the structure of an SRT or WebVTT file. Renumber cues, fix line endings, remove empty cues and clean trailing whitespace in one pass.

Local processing only. Your file is cleaned on your device.

Input subtitle

Cleaned output

What gets cleaned

  • Renumber cues — every cue's numeric ID is rewritten to 1..N.
  • Remove empty cues — cues with no visible dialogue are deleted.
  • Trim trailing whitespace — removes trailing spaces and tabs from each line.
  • Normalize line endings — Windows CRLF and old Mac CR become Unix LF.

When to use it

  • Preparing a subtitle file for a strict player or platform.
  • Fixing a file that produced errors after merging or splitting.
  • Final polish before delivery.

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