Omikuji Tools Text & Dev

Furigana Converter

Add furigana (reading aids) to Japanese text. Choose which kanji get readings, fix misreadings, and print with ruby intact.

Features

  • Automatic furigana that sits only over the kanji, leaving okurigana alone (読(よ)む)
  • Skip kanji learned up to a school grade (MEXT grade list, 1,026 kanji), show only non-Joyo kanji, or only the first occurrence
  • Click a word to fix its reading everywhere it appears; names and places are flagged for checking
  • Export as parentheses, |kanji《reading》, HTML <ruby>, all hiragana/katakana, or rich text with ruby for Word
  • Print or save as PDF in vertical or horizontal writing with the furigana intact

Use cases

Japanese learners

Read articles and lyrics with hiragana or romaji over the kanji.

Teachers and graded readers

Add readings only to kanji beyond your students' level.

Easy Japanese notices

Make signs and letters readable for children and newcomers.

Web novels and blogs

Get ruby markup you can paste straight into your post.

Privacy

Text is analysed only inside your browser and never sent anywhere. The kanji reading dictionary (about 17 MB) is downloaded once from this site (tools.omikuji.dev). Your text and settings are stored only in this browser.

FAQ

Which list is used for school grades?

The Gakunen-betsu Kanji Haitōhyō from Japan's Ministry of Education course of study (in force since April 2020): 80, 160, 200, 202, 193 and 191 kanji for grades 1–6, 1,026 in total.

A reading is wrong

Readings are estimated with the kuromoji morphological dictionary, so names, places and context-dependent words can be misread. Click the word in the preview to type the correct reading.

Can I print vertical text?

Yes. Choose Vertical in the print preview. Furigana appear to the right of the kanji and short numbers are set upright. Choose Save as PDF in the print dialog for a PDF.

Can I show romaji instead of kana?

Yes. Set the furigana script to Romaji to put Hepburn romaji over the kanji, which helps beginners who cannot read kana yet.

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Options

Kanji that get furigana

Every kanji gets furigana.

Furigana script

Preview (click a word to fix its reading)

Your text appears here with furigana

Proper nouns (names, places) and words whose reading depends on context (e.g. ninki / hitoke) are often misread, so they have a dotted underline. Words with no known reading have a red wavy underline. Click to enter a reading.

Export as text

Print preview

Writing direction

Choose "Save as PDF" in the print dialog to get a PDF. In vertical writing, numbers of up to two digits are set upright.

How to use

  1. Paste or type Japanese text (the reading dictionary takes a moment to load the first time).
  2. Choose which kanji get furigana: all, by school grade, or non-Joyo only.
  3. Click any misread word in the preview and type the correct reading.
  4. Copy the result in the format you need, or print it in vertical or horizontal writing.