Subtitle Cleaner
Fast. Private. Perfect.
Strip tags, remove sound-effect annotations, fix spacing errors, and eliminate duplicate lines from your subtitle files - all in your browser.
Drag & drop your subtitle file here
or click to browse
SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI, TXT
How It Works
Drag and drop your subtitle file into the upload area, or click to browse. SRT, VTT, ASS, SSA, LRC, and SBV are all supported.
The cleaner auto-detects the format and parses your file into structured subtitle cues.
Toggle cleaning options on or off - each option targets a specific type of unwanted content.
Click to process. The cleaner applies all selected options in sequence and outputs a clean SRT file.
Preview the result with before/after cue counts, then download the cleaned SRT.
Why Choose AllSubConverter?
Your Privacy Matters
Everything runs in your browser. Your files are never uploaded.
Lightning Fast
Optimized processing engine converts files in seconds.
Truly Unlimited
No file size limits. No daily limits. Completely free.
Works Everywhere
Works on Windows, Mac, Linux, iOS, Android - any modern browser.
Why Use the Subtitle Cleaner?
Who Needs a Subtitle Cleaner?
Streaming Platforms
Deliver clean, tag-free subtitle tracks that meet platform delivery specs for Netflix, Amazon, and Hulu.
Translators and Localization
Strip formatting markup and sound-effect annotations before feeding subtitles into CAT tools or translation memory.
Accessibility Compliance
Remove HI annotations and redundant duplicates to produce clean SDH-compliant or standard subtitle files.
Content Creators
Fix spacing and formatting errors from auto-generated or OCR-extracted subtitles before publishing.
Media Archivists
Batch-clean legacy subtitle collections to remove outdated markup and standardize on plain SRT.
Educators and E-Learning
Prepare readable subtitle files for online courses by removing distracting annotations and duplicate lines.
Frequently Asked Questions
It accepts SRT, VTT, ASS, SSA, LRC, and SBV files. The format is auto-detected from the file extension and content. The output is always clean SRT, the most widely compatible subtitle format.
HI annotations describe non-dialogue audio for deaf and hard-of-hearing viewers, like (applause), [music], or [doorbell]. The cleaner can remove these to produce a standard subtitle track without sound-effect descriptions.
No. The cleaning options target formatting markup, sound-effect annotations, and duplicate lines. Regular dialogue text is always preserved. The speaker-label removal option is the only one that can affect dialogue, and it is off by default.
No. All cleaning happens entirely in your browser using JavaScript. Your subtitle files never leave your device, making the tool safe for confidential or unreleased content.
When two consecutive subtitle cues have identical text, the cleaner merges them into a single cue whose end time is the later cue end time. This keeps timing continuous while removing redundancy.
Yes. Every cleaning option is a toggle. Six options are enabled by default (HTML tags, ASS overrides, HI annotations, duplicates, spacing, empty cues). Speaker-label removal is off by default since it is more aggressive.