Choose an SRT file
Select or drop one subtitle. UTF-8 and BOM-marked Unicode are detected automatically, with explicit fallback choices for supported legacy encodings.
Subtitle Tools
SRT Cleaner
Normalize an SRT subtitle and preview explicit, optional cleanup rules for recognized formatting, accessibility text, speaker labels, whitespace, empty cues, and exact duplicates—all locally in your browser.
Clean and normalize an SRT subtitle
Choose one SRT, select only the cleanup rules you want, review every proposed change summary, then create a new subtitle without changing the original.
Checking the SRT locally
Validating cue structure and preparing cleanup options…
Encoding needed
Choose the file’s original text encoding
The file is not valid UTF-8 and has no recognized Unicode byte-order mark, so BrowserPine will not guess. Choose an encoding and review the analysis before cleaning.
This SRT file needs attention
SRT ready
- File size
- Encoding
- SRT cues
- Timeline duration
- Structural findings
Review source findings
Analysis complete
Review the proposed cleanup
- Original cues
- Result cues
- Cues changed
- Cues removed
- Text segments removed
- Formatting tags
- ASS override blocks
- Speaker labels
- Square SDH segments
- Parenthetical segments
- Music-only cues
- Empty cues
- Exact duplicates
- Whitespace cues
- Ambiguous preserved
No optional text or cue changes match these settings. You can still create a structurally normalized SRT.
Preserved findings to review
Before and after preview
Only changed cues are shown, up to 30. Subtitle text is displayed safely as text and is never executed as markup.
Cleaned subtitle ready
Your cleaned SRT is ready
The UTF-8 file was rebuilt from the original selected file, validated by reloading it locally, and uses normalized SRT structure.
- Download file
- Output size
- Source cues
- Result cues
- Cues changed
- Cues removed
- Selected options
- Structure
Local processing
Your subtitle cleanup stays on your device
The SRT file is decoded, validated, analyzed, cleaned, and revalidated inside a route-specific browser worker. BrowserPine does not upload or store its timing or text, and no subtitle processing code loads on unrelated routes.
Read how BrowserPine handles filesThree simple steps
How to clean an SRT file
Select rules and analyze
Keep every optional removal off or select only the deterministic rules you need, then review counts, preserved ambiguities, and bounded before-and-after previews.
Confirm and download
Explicitly confirm the analyzed settings, create a sequentially numbered UTF-8 SRT from the original selected files, and download the validated result.
Safe SRT normalization without changing timing
Every output uses sequential cue numbering, standard HH:MM:SS,mmm timestamps, CRLF line endings, exactly one blank line between cues, and a final newline. Those structural repairs do not shift cue times, reorder cues, rewrite dialogue, or combine separate entries.
Optional cleanup is deliberately separate from this safe baseline. Formatting, ASS overrides, speaker labels, SDH segments, music-only cues, whitespace, empty cues, and exact duplicates are removed only when their individual controls are selected and the proposed result has been analyzed.
Conservative cleanup keeps ambiguous text
Speaker-label detection is limited to confident line-start patterns; URLs, time-like text, labels in the middle of dialogue, and ambiguous prefixes remain. Bracket and parenthetical cleanup requires balanced, bounded segments, while malformed or nested delimiters are preserved and reported.
Recognized bold, italic, underline, legacy font wrappers, and supported ASS presentation blocks can be removed while enclosed words stay in order. Unknown markup and unrecognized brace commands remain literal. Exact deduplication requires matching start time, end time, and transformed text, so repeated dialogue at different times is preserved.
Common questions
SRT Cleaner FAQ
Does SRT Cleaner change subtitle timing?
No. This cleaner preserves every accepted cue start and end time exactly. Use Subtitle Time Shifter for a consistent timing offset or Subtitle Editor for cue-by-cue timing changes.
Can it remove hearing-impaired or SDH descriptions?
Yes, when you explicitly select square-bracket or parenthetical cleanup. Only balanced, bounded segments are removed; nested, malformed, or unusually long candidates are preserved for review.
Will it remove speaker names from every line?
No. It removes only confident, short speaker labels at the start of a line, such as MARY: or Narrator:. Ambiguous prefixes, URLs, time-like text, and labels elsewhere in a line remain unchanged.
What counts as an exact duplicate cue?
Two cues must have the same start time, end time, and text after earlier selected cleanup passes. Only the later exact match is removed; repeated dialogue at a different time remains.
Is this the same as converting SRT to TXT?
No. SRT Cleaner keeps cue timing and SRT structure. SRT to TXT intentionally removes cue numbers and timestamps to create a plain-text transcript.
Are cleanup options enabled automatically?
No. All subjective or destructive cleanup rules, including empty-cue removal, start off. Safe structure normalization is always applied, and a cleaned file is created only after analysis and explicit confirmation.
Keep working
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Subtitle Editor
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Subtitle Time Shifter
Move every SRT cue forward or backward by one precise offset.
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