How to Turn YouTube Videos into Anki Flashcards
Anki is the gold standard for memorizing vocabulary, but its biggest weakness has always been context: a word on a card, stripped from any sentence, is easy to recognize and hard to actually use. YouTube fixes that. Every video is full of words used naturally, with tone, gesture, and situation attached — exactly the context Anki cards lack.
This guide shows a free workflow for turning YouTube videos into Anki flashcards: grab the subtitles, learn words in context while you watch, and move everything between LangKey and Anki without lock-in.
Why YouTube + Anki Beats Either One Alone
- Anki alone: efficient memorization, but shallow. You recognize the word on the card and freeze when a native speaker says it at full speed.
- YouTube alone: rich input, zero retention. Without review, most of what you hear is gone within days.
- Together: videos supply context and repeated natural exposure; Anki's spaced repetition locks the words into long-term memory.
Step 1: Get the YouTube Transcript
Start with the raw material — the video's subtitle track. Paste any YouTube URL into the free YouTube Transcript & Subtitles Lookup tool and it lists every caption track the video carries, manual and auto-generated, with the full timestamped transcript.
Two tips at this stage:
- Prefer manual captions. Auto-generated tracks mishear names and technical terms; a human-written track gives you clean source text.
- Skim before you study. A quick read of the transcript tells you whether the video's vocabulary matches your level before you invest an evening in it.
Step 2: Capture Words While You Watch (Not After)
The old workflow — watch, pause, open a dictionary, type the word into Anki by hand — is why most people quit. The efficient version captures words at the moment of encounter:
- Install the free LangKey extension (Chrome, Edge, Firefox).
- Open your video on YouTube, Bilibili, TED, or Netflix and enable bilingual subtitles.
- Click any word in the subtitles for an instant translation, then save it with one tap.
Every saved word keeps its sentence context — the exact line from the video where you met it. That context is what will make the card stick later.
Step 3: Let SRS Do the Scheduling
Saved words flow into LangKey's built-in SRS review queue automatically, so you do not need to manage decks by hand. Wrong answers resurface sooner; mastered words space out. If you are coming from Anki, the logic will feel familiar — it is the same spaced-repetition principle, just attached to the videos you are already watching.
Step 4: Move Decks Between LangKey and Anki
Your vocabulary should never be hostage to one app. Use the free Anki Deck Converter to move words in either direction:
- Anki → LangKey: in Anki desktop, export your deck as CSV ("Notes in plain text"), paste it into the converter, and import the result in the LangKey extension under Settings → Data. Your old cards start appearing — highlighted — inside the videos you watch.
- LangKey → Anki: export your saved words from LangKey to an Anki-compatible format anytime, and import the file in Anki like any other deck.
The round trip takes about two minutes, and because both sides speak CSV/JSON, you are never locked in.
A Realistic Weekly Routine
| Day | Activity | Time |
|---|---|---|
| Mon–Fri | Watch one 10-minute video with dual subtitles, save 5–10 words | 15 min |
| Daily | SRS review of saved words | 5 min |
| Weekend | Dictation mode on the week's best video; export new words to Anki | 20 min |
That is roughly two hours a week — and unlike marathon study sessions, it is a schedule you can actually keep.
Common Questions
Can I convert YouTube subtitles directly into an Anki deck? Yes — extract the transcript with the captions lookup tool, build your word list from it, and run it through the Anki converter to get an importable file. In practice, capturing words while you watch (Step 2) produces better cards because each one keeps its context.
Which video types make the best flashcard sources? Interview shows, vlogs, and TED talks — conversational vocabulary with clean, human-written captions.
Is the whole workflow really free? Yes. The transcript tool, the Anki converter, one-way import, and the core practice modes in the LangKey extension are all free.
Start with one video you love. Install LangKey, save your first five words tonight, and let spaced repetition handle the rest.