Readable dual subtitles.
Learning line first. Familiar line underneath. Stable sizing and contrast, so both lines stay easy to scan.
Dual subtitles for Netflix and YouTube
Keep the original line and your translation together, with phrase lookup when a sentence moves too fast.
Free covers dual subtitles, replay, blur, saved lines, and export. Premium adds short explanations for confusing lines.
No te preocupes por nada de eso
Do not worry about any of that
Product
Built for people who use shows as listening practice: readable dual subtitles, phrase lookup, replay, and saved lines with context.
Learning line first. Familiar line underneath. Stable sizing and contrast, so both lines stay easy to scan.
Click a word or drag across the whole phrase. The explanation stays in the video, where the context still makes sense.
Alt-R jumps back to the current subtitle line, so you can hear it again without hunting through the timeline.
Idioms, grammar turns, tone, and context when a literal translation is accurate but not especially useful.
Keep vocabulary attached to the sentence where you found it, then export to CSV or Anki when you are ready to review.
Works on desktop Chrome with Netflix and YouTube, including YouTube auto-translate captions when available.
Privacy
Settings, saved words, and free lookups stay in Chrome extension storage. Premium sends the selected phrase, nearby subtitle line, and language pair so the answer has context. Not the page. Not your history.
Pricing
The core subtitle workflow is free. Premium is for idioms, grammar, and lines that do not explain themselves.
$0
For everyday watching practice.
$4/mo
$29 per year available.
After payment, open the extension and check access. If you switch browsers, activate with your payment email.
FAQ
No. Dubstack is independent and is not affiliated with Netflix, YouTube, or Google.
No. Premium requests include only the phrase you asked about, its subtitle context, language codes, and access data.
Subscriptions are managed through the billing portal. Free features keep working after cancellation.
Dubstack focuses on a cleaner watching loop: stable dual subtitles, phrase lookup, replay, saved context, and fast fixes when subtitle sites change.