Subtitle Tools

SRT Cleaner

Remove numbering issues, markup, SDH notes, and extra spacing from SRT subtitles.

SubtitlesSRT Cleaner
Subtitle utility

SRT Cleaner

Remove numbering issues, markup, SDH notes, and extra spacing from SRT subtitles.

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sample-cleaned.srt173 chars

About this srt cleaner

The SRT cleaner tidies subtitle files by fixing cue numbering, removing leftover markup and SDH notes like [music] or speaker tags, and stripping extra blank lines and spacing. The result is a cleaner SRT ready to upload, edit, or turn into a transcript.

Subtitles gathered from different sources often arrive cluttered, and that clutter shows up on screen or gets in the way later. Running a cleanup pass first saves manual editing; review the output to confirm only the noise was removed and the actual caption text stayed intact.

Common uses

  • Remove SDH notes, markup, and formatting clutter from an SRT file.
  • Fix broken or out-of-order cue numbering before uploading.
  • Clean a subtitle file before turning it into a transcript.

Helpful tips

  • Decide whether to keep SDH notes; some audiences rely on them.
  • Keep the original file in case the cleanup removes more than intended.
  • Pair cleanup with the subtitle-to-text tool when you want a plain transcript.

How to use SRT Cleaner

  1. Upload or paste the subtitle file you want to handle with SRT Cleaner.
  2. Confirm the source format, cue order, encoding, and timing style before making changes.
  3. Run the conversion, cleanup, timing shift, merge, or edit action with a small timing check in mind.
  4. Preview captions near the beginning, middle, and end of the video to catch drift or formatting issues.
  5. Export the subtitle file in the format your video editor, player, or publishing platform expects.

Frequently asked questions

What does the SRT cleaner remove?

It can fix cue numbering and strip markup, SDH notes, and extra spacing, leaving clean caption text and timing.

Will it remove the actual subtitle text?

No. It targets formatting noise and notes, not the spoken caption text. Review the output to confirm the result reads as expected.

Is SRT Cleaner free, and does it work on mobile?

Yes. SRT Cleaner is free to use on JustBloc with no account or installation, and the page is designed to work on desktop, tablet, and mobile browsers.