Cognitive Readability Scorer (Multi-Metric)
WCAG 3.1.5 asks that complex text be supplemented with lower-secondary-level content. This tool scores your writing with six established readability formulas — fully in your browser — so you can simplify or add summaries before publishing.
Tool interface
Readability dashboard
Most complex sentences
Suggestions
Introduction
Dense writing excludes readers with cognitive disabilities and lowers comprehension for everyone. Measuring readability is the first step toward fixing it — and doing it locally keeps sensitive drafts private.
How it works
- Counts words, sentences, letters, and syllables with a local heuristic.
- Applies six readability formulas.
- Averages the grade levels and interprets them against WCAG 3.1.5.
- Highlights the most complex sentences and offers simplification tips.
Privacy
All computation is local string parsing. No upload, no account, no API key — safe for confidential documents.
Limitations
- Syllable counting is heuristic; edge-case words may skew results slightly.
- Formulas estimate grade level; they don't measure domain familiarity or structure.
FAQ
What grade level does WCAG require?
WCAG 3.1.5 targets lower-secondary education (about grade 8–9) for supplemental content when text is complex.
Is my text uploaded?
No. Everything runs locally in your browser.