Merge Two Subtitle Files into Bilingual Subtitles
Combine two SRT or VTT files into bilingual subtitles. Choose language order, preview aligned lines and preserve unmatched text locally.
How to Use Bilingual Subtitle Merger
- Import the top and bottom subtitle files
- Check that both match the same video edition
- Preview time alignment and export bilingual subtitles
Supported Formats and Limitations
This tool stacks two languages, rather than joining consecutive parts of a movie.
One-to-many lines are segmented at time boundaries. Unmatched text is preserved.
Different video edits require timing correction or manual matching first.
Example input and output
A short example. Import your own file in the workspace to preview the result.
1 00:00:01,000 --> 00:00:04,200 The coast reminds us to slow down. + 1 00:00:01,000 --> 00:00:04,200 海岸提醒我们，把脚步放慢。
1 00:00:01,000 --> 00:00:04,200 The coast reminds us to slow down. 海岸提醒我们，把脚步放慢。
Frequently Asked Questions
Do I need to upload my files or sign in?
No. This free tool processes your files locally in your browser without an account. Export your result before leaving the page.
What should I check before downloading?
This tool stacks two languages, rather than joining consecutive parts of a movie.
Will my original file be changed?
The source file is not overwritten. Review the result and download a new file. Keep your original when converting formats, because styling and positioning may not carry over.