Dedupe · free · in your browser

Remove Duplicate Subtitles

Drop repeated and near-identical cues — by similarity or timing proximity.

In/Out: SRT · VTT

Remove Duplicates
100% in your browser
Most popular

From → To

Clean up Casing Split lines over Max 2 lines Remove duplicates Similarity ≥ Proximity ms Strip SDH [brackets] Remove watermarks Fix ALL CAPS Position Encoding

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Drop up to 10 subtitle files

SRT · VTT · ASS · SBV · SUB · STL — 100% in your browser, nothing is uploaded

✓ No signup
✓ Nothing uploaded
✓ Free

Same line twice, twice?

Merging episodes, re-encoding, or concatenating files often leaves consecutive cues saying the same thing. This tool drops them using a similarity threshold (default 80% similar text) plus a timing proximity check (default 500 ms) — so genuinely different lines stay untouched.

Tune both sliders to your content and run it locally in your browser.

All 21 tools → or or try the free SRT ↔ VTT converter