Twin Subtitles: SRT Translator

Turn any .srt into bilingual subtitles that show two languages on screen at once - one on top, the other below - so you can learn a language while watching the films and shows you already love.

Twin Subtitles is an SRT translator and subtitle editor built for language learners, translators, and anyone who wants dual subtitles. Drop in a subtitle file and the built-in AI translator, powered by Gemini, produces a fast, context-aware translation that keeps italics, line breaks, and timing intact. Already have both languages? Merge two SRT files into one perfectly aligned track instead.

WHAT YOU CAN DO

• Bilingual subtitles, side by side - show two languages at once, top and bottom, each with its own style.
• AI subtitle translator - context-aware batch translation via Gemini that preserves italics, line breaks, and timecodes.
• Merge SRT files - combine two .srt files into a single dual-language subtitle track with perfect timecode alignment.
• Full SRT editor - edit lines, fix timing, and adjust entries before you export.
• Built-in player - preview your dual subtitles, change playback speed, and jump between entries to verify timing.
• Customizable display - per-language color, font size, background color and opacity; swap which language sits on top with a single drag.
• Export to .srt or .ass - this ASS subtitle converter gives you burn-in-ready output for any media player or video editor.
• Search built-in - find the matching .srt for your show from inside the app.
• Multi-language interface - English, Simplified Chinese, Japanese, Spanish, and French.

WHO IT'S FOR

• Learners who want to learn a language with subtitles in their native and target language at the same time (great for Chinese and English).
• Translators preparing bilingual subtitle tracks.
• Educators building teaching materials.
• Anyone who watches international films and wants to follow along in two languages.

Whether you need a subtitle translator, an SRT editor, or a simple way to merge SRT files into dual subtitles, Twin Subtitles keeps the whole workflow in one app.

PRIVACY

Subtitle files are processed on-device or via your own Firebase project. We don't store your media or text. See our privacy policy for details.