SRT Cleaner

Clean SRT, VTT, ASS, and SSA subtitle files by removing SDH markers, watermarks, and fixing formatting issues

Supports: .srt, .vtt, .ass, .ssaMax 10 filesOutput: SRTFree Online Tool
Tool Options

Select your files
What this tool does

Clean and optimize subtitle files by removing unwanted annotations, watermarks, and fixing formatting issues.

Supports SRT, VTT, ASS, and SSA formats with batch processing up to 10 files at once.

Common cleaning tasks
  • Remove SDH cues like [MUSIC], (DOOR SLAMS), and sound effect descriptions
  • Strip watermarks and promotional text added by subtitle creators
  • Delete speaker labels (JOHN:, Mary:) for cleaner viewing
  • Clean malformed HTML/ASS tags and normalize spacing
  • Fix ALL CAPS text and merge duplicate subtitle lines
  • Remove empty cues and sort subtitles by timestamp
Advanced formatting options

Choose which styling tags to preserve (italic, bold, font) and which to strip.

Selectively remove content between brackets, parentheses, asterisks, or other delimiters.

Merge overlapping subtitles and eliminate duplicate entries automatically.

Best practices

Preview the cleaned output before using with your video to ensure dialogue isn't accidentally removed.

Keep speaker labels if you're creating transcripts; remove them for standard viewing subtitles.

Use the formatting options to preserve intentional styling like emphasized words in italic.

Why Choose Our SRT Cleaner?
  • Free and Online: No software installation required
  • Fast Processing: Quick conversion and processing
  • Multiple Formats: Support for .srt, .vtt, .ass, .ssa files
  • Batch Processing: Handle up to 10 files at once
  • Privacy Focused: Your files are processed securely
  • No Registration: Start using immediately
How to Use SRT Cleaner
  1. Upload your subtitle files by dragging and dropping or clicking "Choose Files"
  2. Configure any tool-specific options if available
  3. Click "Process Files" to start the conversion
  4. Download your processed files when ready

The tool supports files up to 50MB for image-based subtitles (.sup, .sub, .idx) and 5MB for text-based formats. Processing usually takes just a few seconds depending on file size and complexity.

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