Read Japanese.
Remember every word.
Paste any text, subtitle or book — Furiganaize adds furigana over every kanji, saves the words you look up, and brings them back for review right before you'd forget them.
- No sign-up to start
- 50 words free
- Runs in your browser
翌期も採算確保には至らず
彼女の気まぐれな態度に翻弄された
to toy with; at the mercy of
+ Save word3
to review
Paste or import — get furigana instantly
Your furigana will appear here.
Reading Japanese is hard enough. Remembering it shouldn't be.
“Textbooks feel too easy, but real content buries me in new words.”
“I understand the sentence — but I couldn't use that word myself.”
“I look this word up every single time and it never sticks.”
“My reading's fine, but my vocabulary stopped growing.”
More than furigana —
build your own reading-based vocabulary as you read
Tap any word as you read to see its furigana, meaning and JLPT level, then save it to your wordbook. Spaced repetition brings each word back right before you'd forget it.
Tap a word and click Save word — words pile up here.
Forgot
Review again
Learning
in 1 day
Mastered
in 3 days
Each word checks back in right before it slips your mind.
Review in your wordbookBeat the forgetting curve
Furiganaize resurfaces each saved word right before you'd forget it — daily reviews, a few minutes at a time, timed to how memory actually works.
22,610
words in the dictionary
N5–N1
JLPT levels tagged
100%
runs in your browser
$0
to get started
Paste it in, or drop in a file
- ✓ Pasted text
- ✓ .txt files (UTF-8 & Shift-JIS)
- ✓ .srt / .vtt subtitles — study with your favorite shows
- ✓ .epub books
- 🔒 PDF, URL import & 20,000-character texts — with Pro
Save words from any website
Reading the news or a blog outside Furiganaize? Right-click any Japanese word in Chrome and it lands straight in your wordbook, ready for tonight's review.
Free to start. Pro when you're hooked.
Free
$0forever
- ✓ Furigana for texts up to 3,000 characters
- ✓ Dictionary popups with JLPT levels
- ✓ Wordbook with up to 50 words
- ✓ Full spaced-repetition review
- ✓ TXT, SRT/VTT, EPUB import
Pro
$5/month
- ✓ Everything in Free
- ✓ Texts up to 20,000 characters
- ✓ Unlimited wordbook
- ✓ PDF import
- ✓ AI context-aware definitions & examples
- ✓ JLPT wordbook
Learning & reviews
›What reading level is Furiganaize for?
Furiganaize shines for intermediate and upper-intermediate learners (roughly N3–N1) who can already read but keep hitting new words. Furigana on every kanji means beginners can use it too — it just grows with you.
›How does review work?
Every word you save enters a spaced-repetition schedule. Furiganaize brings each word back right before you'd forget it — 1 day, then 3 days, a week, a month — so a few minutes a day is enough to keep hundreds of words.
›Do I have to review every day?
No. Miss a day and nothing breaks — the schedule simply adjusts. Daily reviews are ideal, but Furiganaize is built around real life, not streaks.
›How do I save a word?
Click any word in your reading to see its reading, meaning and JLPT level, then save it to your wordbook in one tap. It's in your review queue from that moment on.
›Can I study with my own content?
Yes — paste text or import TXT, SRT/VTT subtitles and EPUB books. Read the news, novels or your favorite shows, and turn any of them into vocabulary you keep.
›Can I export my wordbook or use it with Anki?
Not yet — your words stay inside Furiganaize for now. Export options (including Anki-friendly formats) are on our roadmap, so the vocabulary you build won't be locked in.
Account & privacy
›Is Furiganaize free?
Yes — converting text and saving up to 50 words is free. Pro ($5/month) adds PDFs, longer texts and an unlimited wordbook.
›Do I need an account?
Not yet. Your wordbook lives in this browser. Accounts with cross-device sync are coming soon.
›What happens to my saved words if I clear my browser?
Right now your wordbook is stored locally in this browser, so clearing site data will remove it. Cloud sync and backup are on the way — until then, we recommend not clearing Furiganaize's data.
›Does my text leave my browser?
No. Morphological analysis and dictionary lookups all run locally in your browser — nothing you paste is uploaded anywhere.
›Are the furigana and definitions always accurate?
They're very reliable, but automatic analysis (kuromoji) can occasionally misread names, rare readings or unusual compounds. If something looks off, trust your judgment — you can always switch the furigana display or check the reading yourself.
›Where does the dictionary data come from?
JMdict by the Electronic Dictionary Research and Development Group (EDRDG), used under CC BY-SA 4.0. JLPT levels are community estimates (unofficial).