Furigana Extension is a tool that allows you to add phonetic characters to kanji. It is designed to help you to learn how to write the phonetic characters correctly.

The phonetic characters are displayed above the kanji, and you can change their size and color.

You can set the type of notation (hiragana, katakana, or romaji), and the display position (above, to the right, or tooltip).

This is useful for JLPT N5-N1, elementary school grades 1-6.

You can also create a list of words that do not need furigana.

This is useful when you would like to write a word that is not displayed on the screen, but you can still hear it.

You can change the furigana for a specific word.

You can create new furigana for unlisted words.

You can use a text-to-voice function.