{"version":"1.0","provider_name":"SEO Review Tools","provider_url":"https:\/\/www.seoreviewtools.com","author_name":"Jasja ter Horst (admin)","author_url":"https:\/\/www.seoreviewtools.com\/author\/beheerder\/","title":"HTML Headings Checker (H1 up to H6) - SEO Review Tools","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"ofpuldlDjK\"><a href=\"https:\/\/www.seoreviewtools.com\/html-headings-checker\/\">HTML Headings Checker [Update]<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.seoreviewtools.com\/html-headings-checker\/embed\/#?secret=ofpuldlDjK\" width=\"600\" height=\"338\" title=\"&#8220;HTML Headings Checker [Update]&#8221; &#8212; SEO Review Tools\" data-secret=\"ofpuldlDjK\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.seoreviewtools.com\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.seoreviewtools.com\/wp-content\/uploads\/HTML-Headings-Checker.png","thumbnail_width":1440,"thumbnail_height":400,"description":"Check page headings, with the HTML Headings tool. Headings are used to structure the textual content of a web page and are an important on-page factor for both SEO and AI retrieval. The most important heading is the H1 heading followed by the H2 and H3. There are six levels of headings available from H1 to H6. The ....."}