Readability Scorer
Analyze your content's readability with Flesch-Kincaid, Gunning Fog, and Coleman-Liau scores. Free, instant results.
Use Readability Scorer
What is the Readability Scorer?
The JustSEOAI Readability Scorer runs content through three formulas simultaneously — Flesch Reading Ease, Gunning Fog, and Coleman-Liau — mapping each sentence by complexity and estimating audience education level to provide three corroborating quality signals instead of one potentially misleading score.
Who is it for?
Essential for UX writers, technical content producers, healthcare communicators, and SEO professionals optimising for featured snippet eligibility where sentence-length analysis is critical for crafting concise answer-ready content.
Why JustSEOAI's Readability Scorer?
Google's quality guidelines explicitly reward content written for humans at an appropriate reading level. JustSEOAI's Readability Scorer is completely free with no per-analysis limits — the best free readability tool in Kenya for writers who need a quality gate before every publish.
Frequently Asked Questions — Readability Scorer
What is a good Flesch Reading Ease score for web content?
For most web content, aim for 60–70. Featured snippet content typically scores 65–75. Technical documentation may target 30–50; content targeting broad public audiences should aim for 70+.
How do I improve my readability score quickly?
Three fastest improvements: (1) split sentences over 25 words into two, (2) replace complex words with simpler alternatives (e.g. "use" not "utilise"), (3) convert passive to active voice. These alone typically raise Flesch by 10–15 points.
Is the Readability Scorer free to use?
Yes, 100% free with no usage limits and no account required. The scoring algorithms run locally — no AI credits consumed and no data sent externally.
How to Use the Readability Scorer
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Paste your complete content
Include all body paragraphs, headings, and list items. The three scoring algorithms analyse sentence and word complexity across the full text, so partial input produces less representative scores.
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Review your three readability scores
Flesch Reading Ease (0-100, higher is easier), Gunning Fog (years of education needed), and Coleman-Liau (US grade level) are shown together. Convergence across all three gives you confidence in the result.
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Identify the highlighted problem sentences
The tool marks sentences that are longer than 25 words or contain three or more complex words — your primary targets for rewriting.
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Revise and re-score until within target range
For general web content aim for Flesch 60-70, Fog below 12, Coleman-Liau below 10. Re-paste revised content to verify the score has moved into the target range before publishing.
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