Subtitle Cleaner
Free Online Subtitle Cleaning Tool
Remove unwanted tags, SDH descriptions, speaker labels, and formatting from your subtitle files. All processing happens in your browser for complete privacy.
Drop subtitle files here
or Browse Files
Supported: SRT, VTT, ASS, SSA, SMI, SUB
Max 10MB per file
How It Works
Clean your subtitle files in simple steps
Upload Subtitle Files
Drag and drop or browse to select your SRT, VTT, ASS, or other subtitle files. Support for batch processing up to 50 files.
Choose Cleaning Options
Select which elements to remove: HTML tags, SDH descriptions, speaker labels, music notes, watermarks, or apply formatting fixes.
Process Files
Click 'Clean Subtitles' to process your files. All cleaning happens instantly in your browser for complete privacy.
Download Cleaned Files
Get your cleaned subtitle files instantly. Download individually or as a ZIP archive for batch processing.
Common Cleaning Operations
HTML Tags
Before:
<i>Hello world</i>
After:
Hello world
Removes all HTML formatting
SDH Descriptions
Before:
[MUSIC PLAYING] Hello there
After:
Hello there
Removes sound descriptions
Speaker Labels
Before:
JOHN: How are you?
After:
- How are you?
Removes speaker names
Case Normalization
Before:
THIS IS ALL CAPS
After:
This is all caps
Converts to proper case
Why Use Our Subtitle Cleaner?
Professional subtitle cleaning with flexible options and complete privacy
Complete Privacy
All cleaning happens in your browser. Files never leave your device.
Multi-Format Support
Works with SRT, WebVTT, ASS, SSA, and more subtitle formats.
Flexible Options
Choose exactly which elements to remove with granular controls.
Batch Processing
Clean multiple subtitle files at once and download as ZIP.
No Quality Loss
Preserves original subtitle timing and essential content.
Instant Results
Fast client-side processing with real-time preview.
Supported Subtitle Formats
Clean subtitles in all major formats
Input Formats
Upload subtitles in any of these supported formats
Output Formats
Download cleaned subtitles in the same format
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Frequently Asked Questions
What is SDH and why would I remove it?
SDH (Subtitles for Deaf/Hard-of-hearing) includes sound descriptions like [MUSIC PLAYING] and [DOOR SLAMS]. While helpful for accessibility, they can be distracting for regular viewers and may appear as text in players that don't support formatting.
Will cleaning affect subtitle timing?
No, the cleaner only modifies the text content. All timestamps and timing information remain exactly the same.
Can I undo the cleaning if I don't like the result?
The original files are never modified. You can always re-upload the original files and try different cleaning options.
What formats are supported?
We support SRT, WebVTT (VTT), ASS, SSA, SAMI (SMI), and MicroDVD (SUB) formats. The output will be in the same format as the input.
Is there a file size limit?
Each file can be up to 10MB, and you can process up to 50 files at once. This is more than enough for feature-length movies and TV series.
Are my files uploaded to a server?
No, all processing happens entirely in your browser using JavaScript. Your files never leave your device, ensuring complete privacy.