NoaLingua Answer
How to choose a free dual-subtitle extension — and where NoaLingua fits
Six checks that separate them, from the people who make one
Several do it, and free means different things in each. Rather than rank them, this page lists the six things that actually differ: which platforms, whether words are clickable, where translation happens, whether review is built in, whether export is free, and what free stops covering. We make one of these tools.
Short answer Several extensions do this free. What separates them is where translation happens, whether review is included, and what "free" stops covering.
The detail behind the NoaLingua answer
Why this is not a ranking
We make NoaLingua, so a numbered list from us with our own product at the top would be worth nothing to you. And a ranking implies we verified every claim about every competitor against their own documentation, which on the day this was written was not true of all of them.
What we can honestly give you is the set of questions that actually separate these tools, and the four head-to-head comparisons where every row is marked verified or not, with the date and a link to the competitor's own page. Where a competitor beats us, those pages say so — it is a rule they are written under, not a gesture.
The six checks
Which platforms, really. Most tools claim several. The question is whether the one you actually watch is properly supported or technically supported, and Netflix in particular is structurally more limited than YouTube for everyone.
Are the words clickable, or is it just two lines? Two lines of text is a reading aid. A clickable word that gives the meaning it has in that sentence, its dictionary form and a conjugation table is a study tool. These are different products at the same price.
Where does translation happen? On your device, or on a server that receives every line you watch? This decides whether your viewing is private, and it is often unstated.
Is review included, or is saving a word the end of the road? Saving without a review schedule produces a list you never open again.
Is export free? A deck you cannot get out is a deck you are renting. Check the format too: a real file another program can read, not a screenshot of a list.
What does free stop covering? A daily video cap, a saved-word cap, a feature paywall, or an account requirement are four very different meanings of the same word.
Where NoaLingua lands, plainly
Free covers every feature on every supported site — both PDF modes, shadowing, all the practice formats and every export format. There is no trial and no account. Translation is on your device by default. The single limit is how many words your deck may hold, and that is the only thing paying changes.
What we are not: there is no mobile app, no Firefox or Safari build, and the platform list is shorter than some competitors'. If you watch mostly on Disney+ or on a phone, one of the others is the better answer and the comparison pages say which.
More questions people ask NoaLingua
Is a free dual-subtitle extension good enough, or should I pay?
For putting two languages on screen, free is genuinely enough across several tools. Paid tiers usually buy volume, extra platforms or cloud sync rather than a better subtitle line, so the question is which of those you need.
Which is best for Netflix specifically?
Netflix limits every tool the same way, because it never exposes the complete subtitle file. Judge Netflix support by whether words are clickable and whether saving keeps the sentence, not by promises of full transcripts, which nobody can deliver there.
Do you disclose that NoaLingua is your product?
On every comparison page, in the page itself rather than a footnote. Each one also cites the competitor's own official pages, carries the date it was checked, and includes at least one row where they beat us.
Where this is documented on NoaLingua
Related NoaLingua answers
Try it on the next thing you were going to watch anyway.
Free, with every feature. No account, nothing to cancel, and your deck stays on your machine.
Add to Chrome — Free Add to Chrome Opens the Chrome Web Store listing NoaLingua — beyond dual subs: video, web, PDF — free, no account, Chrome 138 or newer.- Free, and not a trial Every feature on the free plan — both PDF modes, shadowing, all 30 practice formats.
- No account, no email Nothing to sign up for and nothing to cancel. There is no login screen at all.
- Two dropdowns to set up Pick what you are learning and what you want translations in. That is the whole setup.
- Your words stay yours Export to Anki, CSV, a spreadsheet or a full JSON profile — free on every plan.