Check Readability

Web · Extension

Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Check Readability is ranked #5 of 25 in readability checkers on Freedom251. It runs on Browser extension, Web. There is a free plan.

Check Readability plans and pricing

All plans

Free Free no account required · no usage fees · personal and commercial use checkreadability.com · 30 Sept 2026

Compared on readability checkers

Free plan: Yes
Readability formulas: 9 formulas
Sentence analysis: Yes
Clarity recommendations: Yes
Browser extension: Yes
Language support: english

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The record

Purpose: CheckReadability analyzes pasted text and returns nine readability scores plus a consensus grade level.
Formulas: The analyzer supports Automated Readability Index, Flesch Reading Ease, Gunning Fog, Flesch-Kincaid Grade Level, Coleman-Liau, SMOG, LINSEAR Write, FORCAST, and New Dale-Chall.
Analysis: The site provides immediate feedback on text complexity, sentence length, and word choice.
SEO: The product says it helps improve search rankings by making content easier to read and understand.
Accessibility: The product says readable content can improve accessibility for people with reading difficulties.
Web privacy: Text analyzed on the website is sent over an encrypted connection, held in memory only while scores are computed, and not written to a database, logged, or used for training.
Extension privacy: The Chrome extension performs scoring locally in the browser and transmits no page content or selected text.
Analytics: The website uses Google Analytics for page visits, rough geographic region, browser type, and referring site, but not analyzed text.
Extension features: The extension provides a native Chrome Side Panel, full-page or selected-text extraction, interactive formula breakdowns, and nine readability formulas.
Extension users: The extension is designed for copywriters, SEO specialists, editors, researchers, and educators.
Chrome listing: The Chrome Web Store listing describes the extension as free and reports version 1.2.0 updated September 4, 2026.
Themes: The Chrome extension supports System, Light, and Dark interface modes.
Score limits: The terms say readability formulas are statistical estimates and cannot judge whether writing is accurate, logical, appropriate, or well argued.
Support: Privacy questions can be sent to [email protected].
Price from: Free

Where it ranks on Freedom251

Best Readability Checkers in 2026#5 of 25

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Sources

checkreadability.com· checked 30 Sept 2026
checkreadability.com/privacy· checked 30 Sept 2026
checkreadability.com/learn/introducing-check-readability-chr· checked 30 Sept 2026
chromewebstore.google.com/detail/check-readability-readabi/migmoi· checked 30 Sept 2026
checkreadability.com/terms· checked 30 Sept 2026