Clean subtitle text with explicit options while preserving what you need.
Clean subtitle text, remove tags, normalize whitespace, and keep cue timing.
The cleaner applies only the selected cleanup rules to subtitle text, such as removing indexes, timestamps, speaker labels, tags or repeated blank lines.
[ALEX] Hello world , <i>LumaTool</i>
Hello world, LumaTool
Cleanup options are independent and only enabled rules are applied.
1 00:00:01,000 --> 00:00:03,000
Hello world
Removing timestamps creates plain text rather than a valid timed subtitle file.
Cleanup options are independent and only enabled rules are applied.
Processing happens locally in this browser. Your text or file is not uploaded to LumaTool servers.
Prepare captions for translation.
Extract clean dialogue for a transcript.
Remove formatting tags before review.
[ALEX] Hello world , <i>LumaTool</i> 1 00:00:01,000 --> 00:00:03,000
Cleanup options are independent and only enabled rules are applied. Removing timestamps creates plain text rather than a valid timed subtitle file.
Processing happens locally in this browser. Your text or file is not uploaded to LumaTool servers.
Choose only the options needed to turn subtitle or caption text into the cleaned text; the defaults preserve the least surprising behavior.
Review validation messages and compare a representative sample before using the result in production.
Yes. The workspace and result controls adapt to desktop and mobile browsers.
Removing speaker labels that are meaningful. Expecting tag removal to repair invalid cue timing.
Processing happens locally in this browser. Your text or file is not uploaded to LumaTool servers.
Convert WebVTT captions to SRT subtitle format locally.
Use Now SConvert SRT subtitle files to WebVTT locally in your browser.
Use Now SShift SRT and VTT subtitle timings forward or backward locally.
Use Now SRepair SRT numbering, blank lines, timestamps, and cue order locally in your browser.
Use Now SCount subtitle blocks, words, characters, duration, reading speed, and longest lines.
Use Now