How to merge subtitle files
- Click Add files (or drop them) and add the subtitle files in order. Use the arrows to reorder.
- Choose One after another for parts of the same film, or On top of each other for two languages of the same video.
- For parts: set when each next part starts (see below). The merged result appears on the right; download it as SRT.
Joining CD1 and CD2: the offset
Subtitles for the second part usually start again at 00:00:00. To play them with a joined video they must move by the length of the first part. The tool suggests the end of the previous file's last subtitle plus a second; for an exact result type the real length of part 1 (for example 00:52:11,000 — shown by any player). If the second file already continues where the first ends, it is left as it is.
Two languages in one file
With On top of each other each line of the second file is added under the matching line of the first file (the one it overlaps most), so both languages appear together. Lines with no match are kept as separate subtitles. This works best when both files come from the same release.
Frequently asked questions
Can I merge more than two files?
Yes. Add as many as you need; each part is placed after the previous one.
Can I merge different formats?
Yes — SRT, VTT, ASS/SSA, SBV, SUB and timed transcripts can be mixed. The result is saved as SRT (or VTT, SBV, ASS, TXT).
The second part is a bit off after merging.
Change its offset until it matches, or download the result and fine-tune it with the subtitle sync tool using from … on.
Can the second language be in a different colour?
No — lines are stacked as plain text, first file on top.
Are my files uploaded?
No. Text, subtitle files and videos are processed by your browser on your own computer. Nothing is sent to a server.