01 / Subtitles
Both lines, without the pile-up.
Stable sizing, clear contrast, and a familiar translation that stays secondary.
Dual subtitles for Netflix and YouTube
Two subtitles. Less rewinding.
Keep the line you are learning above the one you know. Click a phrase when the translation still is not helping.
Free includes the useful parts. Premium explains the stubborn ones.
Phrase lookup
preocupes
do not worry
No te preocupes por nada de eso
Do not worry about any of that
In the player
The sentence stays where you found it.
Click a word or drag across a phrase. Dubstack opens beside the subtitles, with the scene still in view.
- 1Pick two languagesOnce, in the extension.
- 2Watch normallyBoth lines stay together.
- 3Click when neededThen get back to the scene.
The useful bits
Nothing much to learn.
Choose two languages and press play. Dubstack handles the parts that usually turn a 30-minute episode into a 50-minute one.
02 / Lookup
A whole phrase, if one word is not the problem.
Drag across the expression and keep the explanation attached to its sentence.
03 / Replay
Replay the line. Not the whole scene.
Alt-R jumps back to the current subtitle.
04 / Save
Keep the sentence, not a floating word.
Save context as you watch, then export to CSV or Anki later.
05 / Controls
Small controls. Quiet while you watch.
Switch languages, tune the subtitle look, and get out of the way.
Privacy
Your watch history is not part of the deal.
Free features stay in the browser. Premium sends only the phrase you selected, the nearby subtitle line, and the language pair needed to answer it.
Read the short versionPricing
Free is not a demo.
Use the full watching loop for free. Pay only when explanations for idioms, grammar, and tone start saving you time.
Free
The full watching loop$0
- Dual subtitles
- Word and phrase lookup
- Replay and blur mode
- Saved lines, CSV, and Anki export
Premium
For trickier lines$4/month
Or $29 for the year.
- Short explanations for idioms, grammar, and tone
- Translation fallback when local tools are unavailable
- Up to 150 explanations a day
- Restore access from a new browser
A few details
Reasonable questions.
Does it collect my watch history?
No. Premium requests include only the phrase you ask about, its subtitle context, the language pair, and access data.
What happens if subtitles are not available?
Dubstack leaves the site's own captions alone until it has subtitle lines ready to show.
Can I cancel Premium?
Yes. The free features keep working after cancellation.
Is Dubstack part of Netflix or YouTube?
No. Dubstack is independent and is not affiliated with Netflix, YouTube, or Google.