The Highlight Headings bookmarklet is an indispensable tool for SEO professionals and content creators who need to quickly analyze the heading structure of any webpage.
This intuitive bookmarklet instantly highlights all heading tags (H1-H6) with distinct colors and provides a clear summary of the page's heading hierarchy.
Perfect for on-page SEO analysis and content structure optimization, this tool makes it easy to identify heading patterns and potential structural issues.
javascript:!function(){try{const e={h1:"#ff9999",h2:"#99ff99",h3:"#9999ff",h4:"#ffff99",h5:"#ff99ff",h6:"#99ffff"},t=document.querySelectorAll("h1,h2,h3,h4,h5,h6");let r="";t.forEach((t=>{const o=t.tagName.toLowerCase();t.style.backgroundColor=e[o],t.style.padding="5px",t.style.margin="2px 0",t.style.borderRadius="3px",r+=`${o.toUpperCase()}: ${t.textContent.trim()}\n`}));const o=document.createElement("div");o.style.cssText="position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:white;padding:20px;border-radius:8px;box-shadow:0 0 10px rgba(0,0,0,0.5);z-index:9999;max-width:80%;max-height:80%;overflow:auto;",o.innerHTML=`<h3 style="margin-top:0">Heading Structure Summary:</h3><pre style="white-space:pre-wrap">${r}</pre><button onclick="this.parentElement.remove()" style="margin-top:10px;padding:5px 10px">Close</button>`,document.body.appendChild(o)}catch(e){alert("Error: "+e.message)}}();* Color-codes different heading levels (H1-H6) for easy visualization
* Displays a comprehensive summary of all headings
* Works instantly on any webpage
* Provides clear visual hierarchy analysis
* Includes a modal summary for quick reference
Why Use Highlight Headings? #
This bookmarklet is essential for:
- Quick analysis of page structure and heading hierarchy
- Identifying missing or improperly nested headings
- Ensuring proper SEO heading implementation
- Content structure optimization
- Training content writers on proper heading usage
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