Add Furigana.
Remember
Every New Word.
Paste Japanese text or import a subtitle or ebook. Furiganaize adds readings to kanji, lets you save unfamiliar words, and schedules quick reviews so they stick.
- No account required
- Save up to 100 words for free
- Your text is processed 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 be at the mercy of; to be manipulated by
+ Save word3
due today
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You can read Japanese— but new words still won't stick.
“Textbooks feel too easy, but authentic Japanese overwhelms me with new words.”
“I understand a word while I'm reading, but I can't use it later.”
“I keep looking up the same word, and it still won't stick.”
“My reading has improved, but my vocabulary has stopped growing.”
Turn anything you read into
vocabulary practice
Read with furigana, save the words you want to learn, and review them on a schedule that adapts to your memory.
Tap a word and click Save word — words pile up here.
Forgot
Review again
Still learning
Review tomorrow
Remembered
Review in 3 days
Each word comes back for review on a schedule based on how well you remembered it.
Review in your wordbookBeat the forgetting curve
Furiganaize resurfaces each saved word on a schedule based on your answers — daily reviews, a few minutes at a time, so you spend less time on words you already know.
217,000+
words in the dictionary
N5–N1
JLPT levels tagged
Private
in-browser processing
$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 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.
Start free. Upgrade when you need more.
Free
$0forever
- ✓ Furigana for texts up to 3,000 characters
- ✓ Dictionary popups with JLPT levels
- ✓ Wordbook with up to 100 words
- ✓ Full spaced-repetition review
- ✓ TXT, SRT/VTT, EPUB import
Pro
$59one-time
- ✓ Everything in Free
- ✓ Texts of any length — no character limit
- ✓ Unlimited wordbook
- ✓ PDF import
Learning & reviews
›Who is Furiganaize for?
Furiganaize is most useful for intermediate and advanced learners, roughly JLPT N3–N1, who can already read Japanese but still encounter unfamiliar words. Beginners can use it too: furigana makes kanji easier to read, and the wordbook grows with you.
›How does spaced-repetition review work?
Every word you save enters a review schedule. Your next review is based on how well you remembered the word, so difficult words return sooner and familiar words appear less often.
›Do I need to review every day?
No. If you miss a day, your words will still be waiting for you. Short, regular sessions work best, but there are no streaks to protect and no penalty for taking a break.
›How do I save a word?
Select an underlined word to see its reading, definition, and JLPT level. Then choose Save word to add it to your wordbook and review queue.
›Can I learn from my own content?
Yes. Paste Japanese text or import TXT files, SRT or VTT subtitles, and EPUB ebooks. You can turn news articles, stories, books, and shows into vocabulary practice.
›Can I export my wordbook to Anki?
Not yet. Wordbook export, including an Anki-friendly format, is on the roadmap. Until export is available, your saved words remain in Furiganaize.
Account & privacy
›Is Furiganaize free?
Yes. You can add furigana to texts up to 3,000 characters, use the full review system, and save up to 100 words for free. Pro removes the length limit and adds PDF import and an unlimited wordbook for a one-time payment.
›Do I need an account?
No. Your wordbook is currently stored in this browser. Accounts and cross-device sync are planned for a future update.
›What happens if I clear my browser data?
Your wordbook is stored locally in this browser. Clearing Furiganaize site data will permanently remove your saved words and review history. Cloud backup is not currently available.
›Does my text leave my browser?
No. Furigana generation and dictionary lookup run locally in your browser. Text you paste is not uploaded to Furiganaize.
›Are the furigana and definitions always accurate?
Automatic analysis is reliable but not perfect. Names, rare readings, and unusual compounds may be interpreted incorrectly, so double-check anything that looks unfamiliar.
›Where does the dictionary data come from?
Definitions come from JMdict by the Electronic Dictionary Research and Development Group (EDRDG), used under the CC BY-SA 4.0 license. JLPT levels are unofficial community estimates.
Ready to read Japanese and remember more of it?
Paste your first text, add furigana, and start building a wordbook from the Japanese you actually want to read.
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