Dual subtitles, without the heavy editor.
Translate SRT files with preserved timings or generate ASS subtitles with top and bottom language tracks.
Translate SRT
Upload one file and get a translated SRT with original timings.
What this tool does
DualSubs helps you create dual subtitles, convert SRT to ASS, and translate subtitles with AI while keeping original timings.
Who is this for?
- Anime watchers who want original + translation on-screen
- Language learners combining native and target language
- Movie/TV translators who need quick bilingual output
- VLC and MPV users who want subtitles on top and bottom
Why ASS instead of SRT?
SRT is simple and widely supported, but it cannot reliably position two languages at different screen locations. ASS supports styles, margins, and positioning.
Popular searches
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Trust and privacy
- Your files are processed only to generate the output.
- No accounts required.
- If you need strict guarantees, consider self-hosting.
FAQ
What are dual subtitles?
Dual subtitles show two languages at the same time - usually one line at the top and one at the bottom. This is popular for language learning and anime/movies when you want original + translation together.
How do I merge two SRT files into one ASS?
Use the Dual ASS Generator tab, upload both SRT files, adjust font and margins, then generate an ASS file. ASS supports multiple styles, which lets us place one language at the top and the other at the bottom.
SRT vs ASS - what is the difference?
SRT is a simple subtitle format (timings + text). ASS is an advanced format that supports styles, positioning, and rich formatting. ASS is ideal for dual subtitles because you can define separate Top and Bottom styles.
Will timings be preserved after translation?
Yes. The translator keeps the original timecodes and only replaces the text, so the output stays in sync with the video.
Do you store my subtitle files?
Files are processed to generate your output and are not intended to be stored long-term. If you need strict privacy guarantees, host your own instance or ask for a self-hosted setup.