Freedom251 › Readability Checkers
Check Readability
What Check Readability is
Check Readability analyzes text and returns nine readability scores alongside a consensus grade level. Its formulas include Automated Readability Index, Flesch Reading Ease, Gunning Fog, Flesch-Kincaid Grade Level, Coleman-Liau, SMOG, LINSEAR Write, FORCAST, and New Dale-Chall. The web analyzer gives feedback on complexity, sentence length, and word choice. A Chrome extension adds a Side Panel, full-page or selected-text extraction, and interactive formula breakdowns. The extension scores text locally without transmitting page content or selected text. Text entered on the website travels over an encrypted connection and remains in memory only while scores are calculated; the site says it does not log or store that text. Google Analytics is used for page visits and browser-related information, not analyzed text. The product says readable content can support accessibility and search rankings. Check Readability is free, requires no account, and permits personal and commercial use. Its scores are statistical estimates and cannot determine whether writing is accurate, logical, appropriate, or well argued.
Who it suits
Check Readability may suit copywriters, SEO specialists, editors, researchers, and educators who want readability estimates for text. The browser extension is designed for those groups.
What it does well
- Free with no account or usage fees.
- Provides nine formulas and a consensus grade level.
- Chrome extension scores locally.
- Web text is kept in memory during scoring only.
- Personal and commercial use are permitted.
What to know first
- Scores cannot judge accuracy or logical quality.
- The extension is for Chrome.
- Formula scores are statistical estimates.
Limits
The free plan costs nothing and has no account requirement or usage fees. The formulas are statistical estimates and cannot determine whether writing is accurate, logical, appropriate, or well argued.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 9 readability formulas · no account · no usage fees · personal and commercial use · website text held only during scoring | Free |
As checkreadability.com lists them, read 15 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://www.checkreadability.com/ to analyze pasted text.
- Use the Chrome extension to score a full page or selected text.
- Review the nine formula scores and consensus grade level.
- Choose System, Light, or Dark mode in the extension.
Verdict
Check Readability provides several ways to estimate text difficulty, through its website and Chrome extension. Its scores can inform editing, but they do not assess whether content is accurate or well argued.
Questions
How much does Check Readability cost?
The Free plan costs nothing, with no account required and no usage fees. Personal and commercial use are permitted.
What platforms does it support?
Check Readability is available on the web and as a browser extension. The extension is described as a Chrome extension.
Which readability formulas does it use?
It supports Automated Readability Index, Flesch Reading Ease, Gunning Fog, Flesch-Kincaid Grade Level, Coleman-Liau, SMOG, LINSEAR Write, FORCAST, and New Dale-Chall.
Does the extension send analyzed page content?
No. Extension scoring runs locally in the browser and transmits no page content or selected text.
What happens to text analyzed on the website?
Text is sent over an encrypted connection and held in memory while scores are computed. Check Readability says it is not logged, written to a database, or used for training.
Can its scores assess writing quality?
The formulas estimate readability. They cannot determine whether writing is accurate, logical, appropriate, or well argued.
Facts from Check Readability's own pages
- Accessibility
- The product says readable content can improve accessibility for people with reading difficulties. · checkreadability.com, 30 Sept 2026
- Account requirement
- The service does not require account creation. · checkreadability.com, 15 Oct 2026
- Accuracy limitation
- The terms warn that statistical formulas cannot judge accuracy, logic, appropriateness or quality of argument. · checkreadability.com, 15 Oct 2026
- Actionable feedback
- The site says its results explain what makes text difficult and how to improve it. · checkreadability.com, 15 Oct 2026
- Analysis
- The site provides immediate feedback on text complexity, sentence length, and word choice. · checkreadability.com, 30 Sept 2026
- Analytics
- The website uses Google Analytics for page visits, rough geographic region, browser type, and referring site, but not analyzed text. · checkreadability.com, 30 Sept 2026
- API and SDKs
- The reviewed maker pages describe no public API, SDK or developer integration package. · checkreadability.com, 15 Oct 2026
- Availability limitation
- The terms provide the service as-is and as-available without guaranteeing uninterrupted access. · checkreadability.com, 15 Oct 2026
- Chrome extension
- The browser extension analyzes selected text or complete webpages through Chrome's native Side Panel. · chromewebstore.google.com, 15 Oct 2026
- Chrome listing
- The Chrome Web Store listing describes the extension as free and reports version 1.2.0 updated September 4, 2026. · chromewebstore.google.com, 30 Sept 2026
- Coleman-Liau
- The Coleman-Liau metric estimates readability from character counts rather than syllable counts. · checkreadability.com, 15 Oct 2026
- Commercial use
- The terms allow personal and commercial use, including checking work written for clients or employers. · checkreadability.com, 15 Oct 2026
- Developer identity
- The Chrome listing gives the developer email [email protected] and marks the developer as a non-trader. · chromewebstore.google.com, 15 Oct 2026
- Extension extraction
- The extension can extract full webpage body text or analyze a selected block with one click. · chromewebstore.google.com, 15 Oct 2026
- Extension features
- The extension provides a native Chrome Side Panel, full-page or selected-text extraction, interactive formula breakdowns, and nine readability formulas. · checkreadability.com, 30 Sept 2026
- Extension news
- A maker article dated September 2, 2026 announced the Chrome extension as a new native Side Panel tool. · checkreadability.com, 15 Oct 2026
- Extension package
- The Chrome listing reports a size of 54.35 KiB and English as its language. · chromewebstore.google.com, 15 Oct 2026
- Extension privacy
- The Chrome listing says scoring runs locally, with zero tracking and no data collected. · chromewebstore.google.com, 15 Oct 2026
- Extension rating
- Rating on Chrome Web Store: 0 out of 5 from 0 ratings · chromewebstore.google.com, 15 Oct 2026
- Extension update
- The Chrome listing says the extension was updated on September 4, 2026. · chromewebstore.google.com, 15 Oct 2026
- Extension users
- The Chrome Web Store listing shows 4 users. · chromewebstore.google.com, 15 Oct 2026
- Extension version
- The listed extension version is 1.2.0. · chromewebstore.google.com, 15 Oct 2026
- Flesch-Kincaid
- The Flesch-Kincaid metric converts Flesch Reading Ease results into a U.S. grade level. · checkreadability.com, 15 Oct 2026
- Flesch Reading Ease
- Its Flesch Reading Ease metric uses a 0–100 scale, with higher scores representing easier text. · checkreadability.com, 15 Oct 2026
Where Check Readability stands on Freedom251
- Readability Checkers#6 of 25