Check Readability
Check Readability: A free browser checker combining nine formulas with practical clarity guidance. Ranked #3 of 25 in Readability Checkers by our editors (9.0/10); pricing: Free plan; best for free browser-based readability checking.
At a glance
- Editor score9.0 / 10
- PricingFree plan
- Best forFree browser-based readability checking
- Free planYes
- Paid fromFree
- Readability formulas9 formulas
- Facts checked20 Sep 2026
Where it wins
- Nine readability formulas plus a consensus grade level
- Actionable guidance on sentence length, complexity, and word choice
- Chrome extension analyzes selected text and full webpages
Where it doesn't
- English-language analysis only
- Chrome extension is specific to the Chrome browser
- Focused on readability metrics rather than broader editing tools
Our verdict on Check Readability
Check Readability is a free web-based checker for content creators, copywriters, SEO specialists, educators, legal professionals, editors, and researchers. Users can type or paste text into its web editor and receive results from nine readability formulas, along with a consensus grade level. The service also examines sentence length, text complexity, word choice, and related writing metrics, making it suited to people who need a focused assessment of how difficult text may be to read.
Its standout feature is the combination of formula-based scoring and practical interpretation. Rather than presenting only grades, Check Readability provides guidance on what makes text difficult and how to fix it. The Chrome extension extends that workflow to selected text and full webpages through Chrome’s native Side Panel. It also displays equation breakdowns, syllable counts, and character metrics. This makes the product useful for checking drafts in the web editor as well as reviewing published or third-party page content without leaving the browser. Choose it when multiple readability formulas and explanatory feedback matter more than a broader writing suite.
The product is entirely free, requires no account, and supports personal and commercial use. The website states that analyzed text is not stored, while the Chrome extension performs calculations locally in the browser. Those points make the service a practical option for readers who want a low-friction checker with a straightforward privacy position. Its scope is intentionally narrow: the published features center on readability analysis, and the category specification lists English support. Pick Check Readability for browser-based readability checks, consensus scoring, and actionable clarity recommendations. Consider another tool if you need editing workflows beyond readability metrics or analysis in languages other than English.
Your product? Our editors can test Check Readability in depth and publish a review, labelled as paid · from $149/mo →
Check Readability pricing
All 1 Check Readability plans and prices →
Check Readability fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Readability formulas | 9 formulas |
| Sentence analysis | Yes |
| Clarity recommendations | Yes |
| Browser extension | Yes |
| API access | Not verified |
| Language support | English |
| Deployment | Cloud, Browser extension |
| Platforms | Web, Chrome extension |
| Support | |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | checkreadability.com |
| Facts checked | 20 Sep 2026 |
Alternatives to Check Readability
- Eclipse Readability StudioA free, open-source desktop checker for detailed multilingual document analysis.9.4
- ReadableA deep web and document readability checker for professional content teams.9.2
- ProWritingAidA broad English editing toolkit with deep reports and integrations.8.8
See all Check Readability alternatives →
Check Readability vs the competition
- Check Readability vs Eclipse Readability Studio
- Check Readability vs Readable
- Check Readability vs ProWritingAid
- Check Readability vs Readability Formulas
- Check Readability vs Text Inspector
- Check Readability vs Slick Write
Compare Check Readability with any tool side by side →
Used Check Readability? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Check Readability for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Check Readability is listed in our Readability Checkers directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/check-readability/"><img src="https://www.itechguides.com/best/badge/check-readability.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update