DysWebxia 2.0! More Accessible Text for People with Dyslexia
Luz Rello, Clara Bayarri, Azuki Gòrriz, Ricardo Baeza-Yates, Saurabh Gupta, Gaurang Kanvinde, Horacio Saggion, Stefan Bott, Roberto Carlini, Vasile Topac · 2013 · Proceedings of the 10th International Cross-Disciplinary Conference on Web Accessibility (W4A) · doi:10.1145/2461121.2461150
Summary
This demo paper introduces DysWebxia 2.0, a model for making text more accessible to people with dyslexia by modifying both the presentation and content of text. The project is notable for being the first model to combine text presentation changes (font, spacing, layout) with automatic text content simplification, grounded in empirical research with dyslexic users using eye-tracking studies. While the original DysWebxia 1.0 focused only on text presentation for web reading, version 2.0 expanded to address text content through lexical simplification — replacing complex words with simpler synonyms — and added support for multiple platforms beyond the web. The authors note that although dyslexia affects roughly 10% of the global population and has a significant impact on web reading and writing, WCAG contains no specific provisions for dyslexia. Existing tools like SeeWord, Claro Screen Ruler Suite, Colour Explorer, and Penfriend XL only modify text presentation, and only SeeWord was designed based on qualitative research with dyslexic users. DysWebxia distinguishes itself by using quantitative eye-tracking data to validate its text alteration strategies.
Key findings
DysWebxia 2.0 combines two complementary approaches to text accessibility for dyslexia. The presentation component applies research-backed guidelines for font choice (sans serif), text layout (left-justified, limited line length of 62 characters), font size (minimum 20 points), and color combinations (black on creme, or near-black on white). The content component integrates the LexSiS lexical simplification system, which substitutes complex words with simpler synonyms using word frequency and length as simplicity measures. A key innovation is the ShowSyns interactive strategy, which lets users request synonym suggestions for complex words on demand rather than automatically replacing them — research showed this approach was rated significantly more readable and understandable by dyslexic users. The model was being deployed across multiple platforms: as a web service, a browser plug-in, and apps for tablet and smartphone, demonstrating cross-platform applicability of the accessibility model.
Relevance
DysWebxia 2.0 represents an important milestone in dyslexia-focused accessibility tools by demonstrating that effective support requires addressing both how text looks and what it says. For accessibility practitioners, the key lesson is that text presentation guidelines (font, spacing, colors) and content simplification are complementary strategies, not alternatives. The project also highlights a gap in accessibility standards — WCAG lacks dyslexia-specific guidance despite the condition affecting 10% of the population. The cross-platform deployment approach (web service, browser extension, mobile apps) provides a model for how assistive technologies can be made available wherever people read. While this is a short demo paper rather than a full evaluation study, it effectively synthesizes findings from the team's broader research program into a practical tool.
Tags: dyslexia · text simplification · readability · assistive technology · text presentation · cognitive accessibility · browser extension · natural language processing
Standards referenced: WCAG