Learn French from Netflix & YouTube — Click Any Word to Translate
DeepLingo's Chrome extension turns every French video into a vocabulary lesson. Click a word in the subtitles for an instant translation with IPA and examples, then save it to your DeepLingo vocabulary and review it later in quizzes built from the words you saved.
Free tier always free. Extension Plus — unlimited translations + cloud sync + post-watch quizzes — is $6.99 CAD/month ($59.99/year), included free with any DeepLingo subscription.
What you get
Built specifically for French learners preparing for TCF or TEF Canada — and anyone who learns vocabulary best in context.
Works on Netflix & YouTube
Native captions are replaced with clickable ones. Click any French word for an instant translation popup — with IPA on most words, an example sentence where one exists, and grammar notes.
Synonyms & antonyms with difficulty badges
Word cards show synonyms and antonyms with their own difficulty badges, so you can see which alternatives are common and which are advanced. Click any chip to jump to that word, with a back arrow to return — explore vocabulary like a graph, no extra search.
Native French pronunciation
Hear 55,000+ French words pronounced by real speakers — free human recordings from Wikimedia Commons, played on demand. Combined with IPA on most words, you hear and read the pronunciation of the vocabulary you're learning.
Difficulty badges (A1–C2)
Around 25,000 of the most common French words carry a difficulty badge from A1 to C2, derived from real French usage frequency, so you can tell at a glance whether a word is everyday vocabulary or advanced. Set a range and the extension can dim everything outside it.
Saves to your DeepLingo vocabulary
Saved words sync to your DeepLingo account with show title, timestamp, and source URL — then come back as quizzes built from the words you saved in that video. Known words fade in the overlay so new vocabulary visually pops out.
Transcript sidebar
Press T to open a searchable transcript of everything spoken in the video. Click any line on YouTube to seek to that moment. Synonyms and difficulty badges appear inline in the transcript too.
Works offline, with no account
The 83,000-entry French dictionary ships inside the extension, so word lookups need no server and no sign-in — only sentence translation and syncing ever touch the network. Anything missing routes through the browser's built-in on-device translator, available in Chrome 138+ and Edge 148+ — fast, private, no API key.
Export to Anki, Quizlet, or a spreadsheet
Download your saved words as CSV or plain text, with or without translations and source info. It works even when you're signed out — your vocabulary is yours to take anywhere.
How it works
Three steps from install to your first saved word.
Install from the Chrome Web Store
One-click install from the Chrome Web Store. Works on Chrome, Edge, and other Chromium browsers.
Sign in to DeepLingo (optional for free tier)
The free tier works without an account — translations and saved words live in your browser only. Sign in (or sign up for Extension Plus at $6.99/mo) to sync vocab across devices and unlock post-watch quizzes.
Open a French video
Go to any French YouTube or Netflix video, enable French captions, and start clicking words. Translations appear instantly — no typing.
How DeepLingo compares
Other tools teach you words. DeepLingo is built around French video and the TCF / TEF Canada exams.
| Feature | DeepLingo | Language Reactor | Lingopie |
|---|---|---|---|
| Click-to-translate French subtitles on streaming video | ✓ | ✓ | ✓ |
| Works on your own Netflix and YouTube subscription | ✓ | ✓ | — |
| Word-level difficulty badges on synonyms and antonyms | ✓ | — | — |
| Native French pronunciation audio for vocabulary | ✓ | ✓ | ✓ |
| Saved words become review quizzes | ✓ | — | ✓ |
| Curated video catalogue graded by level | — | ✓ | ✓ |
| Built around TCF / TEF Canada preparation | ✓ | — | — |
| Free tier available | ✓ | ✓ | — |
Comparison accurate as of July 2026, based on publicly available information from each provider's official website or Chrome Web Store listing. Features can change — we review this table quarterly. Each tool solves a slightly different problem: Language Reactor and DeepLingo overlay your own Netflix and YouTube subscription, while Lingopie is a separate video library with its own player. DeepLingo is the only one of the three built specifically around TCF / TEF Canada vocabulary and the only one that puts difficulty badges on synonyms and antonyms. For current pricing, check each provider's own site.
Trademarks and product names belong to their respective owners. This comparison reflects features publicly advertised by each provider and is not endorsed by them.
Who it's for
TCF / TEF Canada candidates
Build vocabulary in context from real French media — the same vocabulary the listening and reading sections of TCF and TEF draw from. Saved words flow into your DeepLingo practice queue.
French immersion learners
Watch what you'd watch anyway. The extension turns Netflix and YouTube into a vocabulary feed — fade out what you know, expose what you don't.
Express Entry & Francophone Mobility applicants
Reach CLB 5 (B1) for Francophone Mobility or CLB 7 (B2) for the 50-point French CRS bonus. Vocabulary breadth is the single biggest predictor of TCF/TEF reading and listening scores.
Not sure what level you're at?
The extension builds vocabulary. The DeepLingo platform tells you where you stand: one full TEF or TCF mock, all four sections, with AI feedback on your writing and speaking.
FAQ
Is the DeepLingo extension really free?
How is this different from Language Reactor?
How is this different from Lingopie?
What are difficulty-graded synonyms and antonyms?
Does this work as a Grammarly alternative for French?
Which platforms does it work on?
Do I need an account to use it?
What data does the extension collect?
Will my DeepLingo subscription cover Extension Plus?
Start learning French from what you already watch
Free tier always free. Extension Plus $6.99/mo (3-day trial). Two clicks to install on any Chromium browser.
Privacy and data practices: extension privacy policy.