Readability Checker

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Website Readability Checker

With's readability checker you can quickly find out how clear articles and blocks of text on your website are. Our checker automatically crawls your website and generates a readability score for each article, letting you know which target groups it's best suited for.

Our automatic readability checker works like this:

  • Crawls your website
    Once you've input your site's URL, our crawler will follow all links on the page in order to identify any subpages.

  • Identify articles and longer blocks of text
    To gauge readability, we isolate the article or text on each subpage. Navigation and other irrelevant elements are ignored.

  • Calculate the readability score
    We use the Flesch reading ease score, a recognized method for ascertaining the readability of a text. The average sentence length as well as the average number of syllables per word are determined, with both then used to calculate the Flesch score based on the formula: 206.835 - 1.015 * x - 84.6 * y, where x is the average sentence length and y is the number of syllables per word.

What Does the Readability Score Mean?

The Flesch reading ease score indicates how readable a portion of text is, ranging from 0 (very difficult to read) to 100 (very easy to read).

Flesch score


Ideal for


Very difficult



Difficult to read

College graduates


Somewhat difficult

Those possessing a high school education



Students reading at the level of a 13-15 year old


Fairly easy to read


Easy to read


Very easy to read

Students reading at the level of an 11 year old


How many pages does the checker assess?

Our crawler attempts to find as many subpages on your website as possible within 3 minutes. If performing a manual evaluation, up to 500 URLs can be examined.

Why do some pages on my site not have results?

To provide a readability score, an article or block of text must contain at least 100 words. Should a page contain fewer than 100 words, it won't be included in the results our checker provides.

What conclusions can I draw from the results?

The readability score shows which groups of people your text is best suited for. If your target group is primarily academics, an article with a lower readability score will be more appropriate. On the other hand, should your target audience be the general public, that same article would be too difficult for the majority of them to appreciate.

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Janis von Bleichert studied business informatics at the TU Munich and computer science at the TU Berlin, Germany. He has been self-employed since 2006 and is the founder of He writes about hosting, software and IT security.
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