Toyohashi Cultural Promotion Foundation Introduces "Rubiful Button" for Automatic Furigana Display on its Website
Rubifull Foundation announced that its "Rubiful Button" function, which automatically displays furigana on websites, has been implemented on the website of the Toyohashi Cultural Promotion Foundation. This aims to improve information accessibility for people who find it difficult to read Kanji, such as children and foreigners.
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- 📰 Published: May 14, 2026 at 20:00
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The Rubifull Foundation (Location: Minato-ku, Tokyo; Representative Director: Yutaka Ito; hereinafter "Rubifull Foundation") announces that its "Rubiful Button" function, which automatically displays furigana, has been implemented on the website of the Toyohashi Cultural Promotion Foundation (hereinafter "Toyohashi Cultural Promotion Foundation").
Since April 2024, the Rubifull Foundation has been offering the "Rubiful Button" free of charge, which automatically adds furigana (pronunciation guides) to Kanji characters, with the aim of improving web accessibility for people who have difficulty reading Kanji, such as children and foreigners.
The Toyohashi Cultural Promotion Foundation has now introduced the "Rubiful Button" with the aim of delivering information more understandably to a wider audience. Users can freely switch the furigana display on and off using the "Ruby ON/OFF" button on the site.
▼Toyohashi Cultural Promotion Foundation Website
https://www.bunzai.or.jp/index.php
The Rubifull Foundation will continue to work towards realizing a society where all people can easily access information through the widespread use and utilization of furigana.
◆Comment from Mr. Atsutoshi Mizuno, Head of Toyohashi Cultural Promotion Foundation
"I happened to learn about the Rubiful Button through a post on X (formerly Twitter). I was deeply empathetic to the founder's message there, which was the impetus for its introduction.
Our foundation is focused on improving accessibility in cultural projects, and I realized that the perspective of 'adding furigana' could be a part of that. The fact that it is free to use also encouraged its introduction.
Recently, the number of people with roots overseas has been rapidly increasing in schools and various workplaces. I presume that a certain number of these individuals have difficulty reading and writing Kanji, but the users of cultural facilities still seem to be limited to those whose native language is Japanese.
While the immediate goal is to accurately convey facility usage information, in the long term, I hope to utilize this tool to create a society where furigana makes things 'gentle and expands people's possibilities.'"
◆About the Rubiful Button
The "Rubiful Button" is a function that allows users to toggle the display of furigana for Kanji characters by simply adding one line of code to an existing website's HTML source. Users can automatically display furigana on Kanji by pressing a button on the website.
https://rubizaidan.jp/rubyful-button/
◆Overview of Rubifull Foundation
The foundation aims to contribute to improving Japanese language ability and intellectual curiosity and thinking skills, as well as to building a multicultural coexistence society where all people, including foreigners and people with disabilities, can live comfortably, by promoting the widespread use and utilization of furigana in publications and digital content.
Location: 2-5-2 Shimbashi, Minato-ku, Tokyo, goodoffice Shimbashi
Established: May 24, 2023
Representative Director: Yutaka Ito
URL: https://rubizaidan.jp/
Since April 2024, the Rubifull Foundation has been offering the "Rubiful Button" free of charge, which automatically adds furigana (pronunciation guides) to Kanji characters, with the aim of improving web accessibility for people who have difficulty reading Kanji, such as children and foreigners.
The Toyohashi Cultural Promotion Foundation has now introduced the "Rubiful Button" with the aim of delivering information more understandably to a wider audience. Users can freely switch the furigana display on and off using the "Ruby ON/OFF" button on the site.
▼Toyohashi Cultural Promotion Foundation Website
https://www.bunzai.or.jp/index.php
The Rubifull Foundation will continue to work towards realizing a society where all people can easily access information through the widespread use and utilization of furigana.
◆Comment from Mr. Atsutoshi Mizuno, Head of Toyohashi Cultural Promotion Foundation
"I happened to learn about the Rubiful Button through a post on X (formerly Twitter). I was deeply empathetic to the founder's message there, which was the impetus for its introduction.
Our foundation is focused on improving accessibility in cultural projects, and I realized that the perspective of 'adding furigana' could be a part of that. The fact that it is free to use also encouraged its introduction.
Recently, the number of people with roots overseas has been rapidly increasing in schools and various workplaces. I presume that a certain number of these individuals have difficulty reading and writing Kanji, but the users of cultural facilities still seem to be limited to those whose native language is Japanese.
While the immediate goal is to accurately convey facility usage information, in the long term, I hope to utilize this tool to create a society where furigana makes things 'gentle and expands people's possibilities.'"
◆About the Rubiful Button
The "Rubiful Button" is a function that allows users to toggle the display of furigana for Kanji characters by simply adding one line of code to an existing website's HTML source. Users can automatically display furigana on Kanji by pressing a button on the website.
https://rubizaidan.jp/rubyful-button/
◆Overview of Rubifull Foundation
The foundation aims to contribute to improving Japanese language ability and intellectual curiosity and thinking skills, as well as to building a multicultural coexistence society where all people, including foreigners and people with disabilities, can live comfortably, by promoting the widespread use and utilization of furigana in publications and digital content.
Location: 2-5-2 Shimbashi, Minato-ku, Tokyo, goodoffice Shimbashi
Established: May 24, 2023
Representative Director: Yutaka Ito
URL: https://rubizaidan.jp/