About Multi-Algorithm Readability & Plain Language Checker
Analyze articles and interface copy across 6 international readability formulas. Identify polysyllabic words, sentence length bottlenecks, and verify WCAG Level AAA Reading Level compliance.
Key Capabilities & Features
- 6 readability index formulas (Flesch, FKGL, Fog, Coleman-Liau, SMOG, ARI)
- WCAG 3.1.5 (Level AAA) lower secondary education audit
- Complex polysyllabic word detection
- Sentence count and word-per-sentence metrics
- Preloaded sample copy presets
How to Use Multi-Algorithm Readability & Plain Language Checker
Paste Copy
Paste your draft text, blog post, or user interface content.
Analyze Scores
Inspect Flesch Reading Ease and Flesch-Kincaid Grade Level.
Refine Copy
Simplify highlighted polysyllabic words and split long sentences.
Privacy & In-Browser Execution Guarantee
Text analysis is performed entirely in client-side memory. Your content is never stored or uploaded.
Frequently Asked Questions
What is the target reading level for WCAG 3.1.5?
WCAG 2.1 SC 3.1.5 recommends that text does not require reading ability more advanced than the lower secondary education level (approximately 7th to 9th grade, or Flesch-Kincaid grade <= 9).
What does Flesch Reading Ease score mean?
Scores between 90-100 are very easy (5th grade), 60-70 are standard plain English (8th-9th grade), and below 30 are difficult academic texts.
How can I improve readability quickly?
Shorten sentences to under 20 words, replace multi-syllable technical jargon with plain equivalents, and use active voice.