Readability score API – Content Input

Price: 1 credits per request

Description: Quickly calculate the Flesch-Kincaid readability score for any URL

Query string parameters

Name Parameter Description
API key &key= Your private API key

Response elements

Name Description
Flesch Kincaid Reading Ease > Score The readability score calculated with the Flesch Kincaid Reading Ease formula
Flesch Kincaid Reading Ease > grade level The corresponding grade level
Flesch Kincaid Reading Ease > label True or False (string)
Flesch Kincaid Reading Ease > class This class can be used to quickly style the output
Paragraphs The total number of extracted paragraphs
Sentences The total number of extracted sentences
Words The total number of extracted words
Characters The total number of extracted characters
Reading time The estimated reading time 
Speaking time The estimated speaking time
avg. word length Calculated in characters
avg. sentence length Calculated in words
avg. paragraph length Calculated in sentences

PHP code example

<?php

/*
    API documentation for SEO Review Tools.
    API info: https://www.seoreviewtools.com/seo-api/
    API documentation: https://api.seoreviewtools.com/documentation/
    LinkedIn: https://www.linkedin.com/company/seo-review-tools
*/ 

function curlFunction ($toolRequestUrl, $data){

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $toolRequestUrl);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,false); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch,CURLOPT_POSTFIELDS, $data);
    $html = curl_exec($ch);
    $curlInfo = curl_getinfo($ch);

    return($html);
}
        


$data = "

<p>Google Search is a fully-automated search engine that uses software known as web crawlers that explore the web regularly to find pages to add to our index. In fact, the vast majority of pages listed in our results aren't manually submitted for inclusion, but are found and added automatically when our web crawlers explore the web. This document explains the stages of how Search works in the context of your website. Having this base knowledge can help you fix crawling issues, get your pages indexed, and learn how to optimize how your site appears in Google Search. </p>

<h2>Crawling</h2>
<p>The first stage is finding out what pages exist on the web. There isn't a central registry of all web pages, so Google must constantly look for new and updated pages and add them to its list of known pages. This process is called 'URL discovery'. Some pages are known because Google has already visited them. Other pages are discovered when Google follows a link from a known page to a new page: for example, a hub page, such as a category page, links to a new blog post. Still other pages are discovered when you submit a list of pages (a sitemap) for Google to crawl. </p>

"; 

$data = stripcslashes(trim($data));

// Encode data to JSON
$data = json_encode($data);

// API key 
$apiKey = "YOUR API KEY"; 

$toolRequestUrl =  "https://api.seoreviewtools.com/readability-score/?content=1&key=".$apiKey; 

$seoDataJson = curlFunction($toolRequestUrl, $data);

header('Content-type: application/json');
echo($seoDataJson);

?> 

JSON response example






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