Readability Checker Tool is a free browser-based analyzer from Digital Mansoor that scores typed or pasted drafts against six standard readability formulas while showing live word, sentence, paragraph, and character counts.
The Readability Checker Tool is a free web app in Digital Mansoor's Free SEO Tools section that takes any block of text — typed directly into the content area or pasted in — and returns readability scores, structural counts, and content optimization feedback. It runs in the browser with no download, and its output is a formatted report covering six index scores plus word, sentence, paragraph, and character totals, words per sentence, and syllables per word. Each score is shown next to a benchmark range so you can see whether a draft lands in the intended grade band.
- Six readability formulas in one pass — Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, and Automated Readability Index (ARI) are all calculated from the same input text.
- Published target ranges per index — the tool pairs each score with a benchmark: Flesch-Kincaid target grade 7–8, Gunning Fog ideal 8–12 (clear), Coleman-Liau target 8–10, SMOG target grade 7–10, ARI target grade 7–9.
- Live structural counters — word count, sentence count, paragraph count, character count, words per sentence, and syllables per word update as you type, with a "Live Sync Active" indicator.
- Actionable content optimization panel — after text is entered, the tool returns customized writing feedback aimed at overly complex sentences, high syllable density, and passive phrasing.
- One-click report controls — Refresh Analysis, Clear Text, and Copy Report buttons let you re-run the scan, wipe the input, or copy a formatted summary for editorial review or archiving.
- Free, no-download workflow — the checker is listed under the site's Free SEO Tools and works entirely inside the web page.
- Content marketers and bloggers: score blog posts and landing copy before publishing to keep sentence length and syllable density in an easy-reading band.
- SEO specialists and copywriters: check readability on key landing pages to reduce bounce rates and improve engagement metrics.
- Technical writers and documentation leads: simplify user guides and technical documentation for general audiences without losing core meaning.
- Students and educators: verify the grade level of essays, papers, and instructional materials against a target band.
Use cases
- Draft review before publishing: paste a finished draft, compare Flesch-Kincaid and Gunning Fog scores against the displayed targets, and rewrite the sentences flagged as too complex.
- Email and landing page tuning: run short marketing copy through the checker to confirm it reads at roughly a Grade 7–8 level for general web readers.
- Editorial handoff: use Copy Report to hand a formatted readability summary to an editor or archive it with the article.
- Type or paste your draft into the content area; live sync begins counting words, sentences, paragraphs, and characters immediately.
- Review the six index scores against their target ranges, then check words per sentence and syllables per word for structural balance.
- Follow the actionable optimization prompts, then click Refresh Analysis to re-score or Copy Report to export the summary.
Pricing
The Readability Checker Tool is free and is published as part of Digital Mansoor's Free SEO Tools collection. The site offers separate account creation and sign-in forms, but the checker itself is presented as an open web utility.
Alternatives
Hemingway Editor, Readable, and Yoast SEO (which includes its own readability analysis inside WordPress).
FAQ
Yes. It is published under Digital Mansoor's Free SEO Tools and runs in the browser at no cost, with no download required. There is no paywall or credit limit described on the page.
It reports Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, and Automated Readability Index (ARI), plus words per sentence and syllables per word.
What grade level should my content target?
The page's benchmarks are Grade 7–8 for Flesch-Kincaid, 8–12 for Gunning Fog (clear), 8–10 for Coleman-Liau, Grade 7–10 for SMOG, and Grade 7–9 for ARI for general web readers.
Can I export or save the analysis?
There is no file export; the Copy Report button places a formatted summary of the analysis on your clipboard so you can paste it into an editorial checklist, document, or email.
