Transforming 'Unreadable' to 'Readable': Web Reading Support App 'Yomu Sapo Personal' Launched

Zettalinx Corporation (Headquarters: Arakawa-ku, Tokyo; Representative Director: Kunihiro Yamada), a developer of education ICT solutions, will begin offering 'Yomu Sapo Personal (for individuals and families),' a browser extension that supports individuals who find it difficult to acquire information from standard web displays due to learning disabilities (LD), dyslexia, developmental disorders, or visual characteristics, starting April 28, 2026.

To commemorate the release of this tool, a campaign will be held until the end of September 2026, allowing all functions to be used "completely free and without restrictions."

Release commemorative campaign offering "completely free and unlimited" use until the end of September 2026

Background of development: Removing the "reading barrier" in digital society for everyone from children to adults

The "Policy for ICT Environment Development in Schools from FY2025 Onwards" formulated by the Ministry of Education, Culture, Sports, Science and Technology calls for maximizing the use of general-purpose software such as browsers standardly installed on one device per student, and achieving both "individually optimized learning" and "guaranteed learning."

However, much of the information on the web is not optimized for children, and difficult kanji characters and dense layouts create a significant "barrier" that hinders intellectual curiosity and autonomous learning. In particular, for children with LD (learning disabilities), dyslexia (reading disabilities), developmental disorders, or visual characteristics, standard web displays are difficult to read, posing a challenge to quickly access desired information.

Zettalinx has previously provided a "function to automatically add furigana according to the school grade-specific kanji allocation table" as a tool for schools and educational institutions, which has been highly supported by teachers and students in the field. In response to requests such as "I want to use it not only at school but also for home study" and "I want to easily introduce it personally," we have now publicly released the 'Personal Edition' which can be used simply by adding an "extension function" to a standard browser.

This innovative approach, which instantly realizes information barrier-free access without the need for special dedicated equipment, provides an inclusive digital world for everyone, seamlessly from school to home.

Image of use on PC browser. Readability can be customized to your liking.

Features of 'Yomu Sapo Personal' (Web Accessibility Support)

This product allows users to customize the text displayed on Chrome and Safari browsers according to their preferences.

1. "Automatic Furigana Display" according to school grade Automatically adds furigana only to unlearned kanji characters based on the elementary school grade-specific kanji allocation table (1st to 6th grade) and JLPT levels (Japanese Language Proficiency Test).

2. "Word Spacing" to make meaning easier to grasp Inserts appropriate spaces between phrases. The visual separation of sentences becomes clear, facilitating content comprehension.

3. "UD Font" for enhanced readability Converts and displays text in Universal Design (UD) fonts, etc., developed to reduce reading difficulty. *Only supports fonts installed on your device.

4. "Customization of Line and Character Spacing" to reduce visual fatigue Fine-tunes line spacing (line height) and character spacing (letter space) to adjust the optimal "whitespace" for each individual, reducing visual fatigue.

[iPhone version] Reading support settings screen for websites and copied text.

[Limited Time] "Completely Free and Unlimited" Campaign until the end of September!

To support more people's desire to "read," we have adopted an easy-to-introduce subscription model.

Pricing Structure

Release Commemorative Campaign (~until the end of September 2026): All functions can be used "completely free and without restrictions."

From October 2026 onwards: ・Free version: Conversion limit of up to 10 sites (domains) per day. ・Paid version: Annual fee of 500 yen (tax included) *Approximately 42 yen per month. Unlimited use.

Provision to support organizations: We also provide licenses via voucher codes to users with reading difficulties and support organizations.

How to obtain

Google Chrome version: Install from the Chrome Web Store

iOS version (Safari): Install from the App Store

*After the free period ends, you will not be automatically transitioned to a paid plan and charged. Please be assured that you will only need to go through the procedure again if you wish to continue using the service.

Product Overview

Product name: Yomu Sapo Personal

Price: 500 yen per year (tax included)

Supported environments:

Chrome extension: Windows, macOS, ChromeOS

Safari extension: iOS, iPadOS

Product page here

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