Mitsukoshi Isetan Soleil Implements 'Rubyful Button' for Automatic Furigana Display on Website
The Ruby Foundation has implemented its 'Rubyful Button,' an automatic furigana (ruby) display tool aimed at improving web accessibility, on the website of Mitsukoshi Isetan Soleil, a special subsidiary of the Mitsukoshi Isetan Group.
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- 📰 Published: May 19, 2026 at 20:00
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The Ruby Foundation (Location: Minato-ku, Tokyo; Representative Director: Yutaka Ito) announces that its 'Rubyful Button,' a feature that automatically displays furigana, has been implemented on the website of Mitsukoshi Isetan Soleil, a special subsidiary of the Mitsukoshi Isetan Group committed to employing people with disabilities.
Since April 2024, the Ruby Foundation has been providing the 'Rubyful Button' free of charge to improve web accessibility for children, foreigners, and others who find reading kanji challenging.
Mitsukoshi Isetan Soleil actively employs individuals with severe intellectual disabilities, utilizing their high-quality work skills to perform approximately 100 types of auxiliary duties for department stores, such as creating wrapping ribbons.
The button was implemented to provide information more clearly to a wider audience. Users can freely toggle the display of furigana using the 'show/hide furigana' button on the site.
▼ Mitsukoshi Isetan Soleil Website
https://www.isetan.mistore.jp/common/soleil.html
The Ruby Foundation will continue to work toward realizing a society where everyone can easily access information through the spread and utilization of ruby annotations.
◆ Comment from Mitsukoshi Isetan Soleil
At Mitsukoshi Isetan Soleil, employees, primarily those with intellectual disabilities, leverage their individual abilities to excel as part of our workforce. When creating our website, we wanted to make it 'universal-free'—easily understandable for those who struggle with kanji and difficult vocabulary, like some of our employees. We discovered this button through an ad for 'Ruby Day' in the newspaper on June 2, 2025, and decided to implement it. The feature that allows switching ruby display on/off with a single button is groundbreaking. We expect this will help more people learn about our company.
◆ About Rubyful Button
'Rubyful Button' is a feature that allows users to toggle the display of furigana for kanji by simply adding one line of code to the HTML source of an existing website. Users can automatically display ruby on kanji by pressing the button on the page.
https://rubizaidan.jp/rubyful-button/
◆ About The Ruby Foundation
The foundation aims to contribute to the improvement of language skills and intellectual curiosity by promoting the spread and utilization of ruby annotations in publications and digital content. It also aims to contribute to building a multicultural society where everyone, including foreigners and people with disabilities, can live easily.
Location: goodoffice Shinbashi, 2-5-2 Shinbashi, Minato-ku, Tokyo
Established: May 24, 2023
Representative Director: Yutaka Ito
URL: https://rubizaidan.jp/
Since April 2024, the Ruby Foundation has been providing the 'Rubyful Button' free of charge to improve web accessibility for children, foreigners, and others who find reading kanji challenging.
Mitsukoshi Isetan Soleil actively employs individuals with severe intellectual disabilities, utilizing their high-quality work skills to perform approximately 100 types of auxiliary duties for department stores, such as creating wrapping ribbons.
The button was implemented to provide information more clearly to a wider audience. Users can freely toggle the display of furigana using the 'show/hide furigana' button on the site.
▼ Mitsukoshi Isetan Soleil Website
https://www.isetan.mistore.jp/common/soleil.html
The Ruby Foundation will continue to work toward realizing a society where everyone can easily access information through the spread and utilization of ruby annotations.
◆ Comment from Mitsukoshi Isetan Soleil
At Mitsukoshi Isetan Soleil, employees, primarily those with intellectual disabilities, leverage their individual abilities to excel as part of our workforce. When creating our website, we wanted to make it 'universal-free'—easily understandable for those who struggle with kanji and difficult vocabulary, like some of our employees. We discovered this button through an ad for 'Ruby Day' in the newspaper on June 2, 2025, and decided to implement it. The feature that allows switching ruby display on/off with a single button is groundbreaking. We expect this will help more people learn about our company.
◆ About Rubyful Button
'Rubyful Button' is a feature that allows users to toggle the display of furigana for kanji by simply adding one line of code to the HTML source of an existing website. Users can automatically display ruby on kanji by pressing the button on the page.
https://rubizaidan.jp/rubyful-button/
◆ About The Ruby Foundation
The foundation aims to contribute to the improvement of language skills and intellectual curiosity by promoting the spread and utilization of ruby annotations in publications and digital content. It also aims to contribute to building a multicultural society where everyone, including foreigners and people with disabilities, can live easily.
Location: goodoffice Shinbashi, 2-5-2 Shinbashi, Minato-ku, Tokyo
Established: May 24, 2023
Representative Director: Yutaka Ito
URL: https://rubizaidan.jp/
FAQ
How can I implement the Rubyful Button?
You can implement it by adding a single line of code to your existing website's HTML source. Please check the official Ruby Foundation website for details.
Is there a cost involved?
No, it is provided free of charge by the Ruby Foundation to promote web accessibility.
What kind of company is Mitsukoshi Isetan Soleil?
It is a special subsidiary of the Mitsukoshi Isetan Group, employing people with intellectual disabilities for various operational tasks in department stores.