Read real Japanese
sooner than you think
every word, and turns what you look up into vocabulary you own.
This is the whole idea
Click any word below to look it up. Then tell Lingaku how well you know it and see how that changes your score at the top.
Find something you can actually read
Lingaku Explore collects Japanese articles, YouTube videos with subtitles, and web novels from Syosetu. They all get a level and difficulty score – but the number that matters most is how much of this text you already know.
Two people can open the same article and see different percentages.
At 95%, you can probably just read it. At 60%, you might want to pick something easier – or read it anyway, with the dictionary just one click away.
Filter by level, length, source or coverage. Sort by how many words you already know.
Read or watch it where it already lives
You don't have to import anything. Install the browser extension and Japanese text on any website becomes clickable – with the same dictionary, highlighting, and tracking as on Lingaku.
On YouTube, it goes further. Japanese subtitles get furigana and become clickable as the video plays. The video pauses while you check a definition, and a transcript sits beside the player so you can click any line to jump back to that moment.
The side panel shows the difficulty and your coverage for the page you're on, along with every word you've looked up there.
Every word you look up comes back
You only review words you actually came across – in the sentence where you found them.
Every lookup is saved with the page it came from, the surrounding sentence, and – for videos – the timestamp. So a word is never just an isolated entry on a list; you can always go back to where you saw it.
When you want to review, add those lookups to a deck, or study them directly without making one. The example sentence on the card is the one you actually read.
名古屋は有名な ラーメンの街です。
Review scheduling is based on SM-2 and can be adjusted to fit how you study – session size, new-to-review ratio, card order, ease, and intervals. You can export to Anki, CSV, or JSON at any time.
Reading teaches you, if the text fits
Three things, none of them complicated.
You can start from absolutely nothing
Never studied Japanese before? You don’t need to learn the basics somewhere else first.
- 87 lessons across 12 sections, starting with hiragana and katakana.
- Each lesson includes an explanation, a dialogue you can read with the popup dictionary, its own vocabulary deck, and the grammar it introduces.
- A kana quiz for hiragana and katakana, with the full tables there whenever you need them.
- Lessons unlock in order, but you can skip anything you already know.
Take the placement test to give Lingaku a starting point. It takes about five minutes and checks which words you already know, so your coverage percentages and review queues don't have to start from zero. You can retake it later, merge the result with progress you've already made, or undo it entirely.
Already have a list of words you know? Import it from CSV instead and Lingaku can use that as your starting vocabulary.
What else is in there
The parts you’ll reach for once Lingaku becomes part of how you study.
Who builds this
Just me.
Lingaku started at university as my bachelor's thesis, then became my master's thesis, and I've kept building it ever since. That's about ten years now.
There's no team, no investors, and no growth targets. I'm a long-term Japanese learner, and Lingaku is the tool I wanted for myself. Most of what's on this page exists because at some point, I wanted it while learning Japanese.
What I'm working on
- A mobile app for flashcards, so reviewing works properly on a phone.
- Grammar review cards, from example sentence to explanation.
- A tool for practising conjugations.
- Full-screen search across lessons, decks, and grammar.
Planned, not shipped yet. The order may change.
Start reading Japanese
Everything above is free to use. Create an account and find something you want to read.
Lingaku