.SRT.VTT

Subtitle Cleaner & SDH Stripper

Strip unwanted HTML styling tags, sound description cues [MUSIC PLAYING], speaker names, and normalize spacing across your subtitle files.

100% In-Browser · Zero Upload

Zero latency · Client-side Web Worker

Selected Cleanup Operations

Strip HTML Tags Removes <b>, <i>, <font>, and <color> markup

Remove SDH Descriptions Strips sound descriptions like [APPLAUSE], (MUSIC), [LAUGHS]

Remove Empty Cue Blocks Deletes blank cues that contain no dialogue

Normalize Whitespace Collapses double spaces and trims trailing line endings

Sequential Renumbering Fixes duplicate or skipped cue numbering

Normalize Quotes Converts curly smart quotes into standard plain quotes

Drop your subtitle file to clean

Options selected above will be applied conservatively

Why Strip SDH Tags and HTML Markup?

Automatic speech-to-text engines, video editors, and localized captions often insert unwanted markup or sound descriptions that clutter social media videos or fail automated QC on platforms like YouTube.

What are SDH Subtitles?

SDH stands for Subtitles for the Deaf and Hard of Hearing. They include non-speech information such as [UPBEAT MUSIC], (DOG BARKS), or NARRATOR:. For clean video captions, creators often prefer to strip these elements and retain only the spoken dialogue.