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Subtitle Diff

Spot text and timing changes side by side — original vs edited.

In: 2× SRT · VTT

Subtitle Diff
100% in your browser

Original

⤓

Drop up to 10 subtitle files

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

Modified

⤓

Drop up to 10 subtitle files

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

Drop a file on each side to compare. Everything runs locally.

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What changed between two subtitle files?

Whether you're reviewing a collaborator's edit, comparing two translations, or verifying a conversion didn't drop anything, Subtitle Diff lines up both files and flags each cue as unchanged, changed, added or removed. Files never leave your device.

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