100% Private & Local
Merge subtitles
Two files in — one track out. Side by side per cue (bilingual), or one after the other (two episodes joined).
Select two subtitle files
or drag both in — a whole folder works too · SRT, VTT, ASS, TXT, in order
In bilingual mode the second file is matched to the first by timing; lines that match nothing keep to themselves.
Files stay on this device — nothing is uploaded.