Furigana is a free web extension designed for Firefox that simplifies reading Japanese text by automatically inserting furigana, which are phonetic characters, above kanji characters. This tool is particularly useful for learners of the Japanese language, as it enhances comprehension and aids in pronunciation. The extension works seamlessly on Japanese web pages, providing an intuitive reading experience by dynamically injecting furigana as users browse.

Key features of Furigana include support for dynamic web pages, ensuring that even content that changes or loads in real-time is accommodated. Additionally, it offers a convenient context menu shortcut for quick access to its functionalities. Overall, Furigana is an essential tool for anyone looking to improve their Japanese reading skills while navigating the web.