Google Ranks Topics, Not Just Pages
Google doesn't rank individual pages in a vacuum. It looks at your entire site to decide how much you know about a topic. If you've written one post about email marketing, you're a footnote. If you've published 15 posts covering every angle, from list building to segmentation to subject lines to deliverability, Google sees you as an authority and rewards your pages accordingly.
This is called topical authority, and it's one of the most misunderstood parts of SEO. Most people focus on individual keywords without stepping back to see the bigger picture: how well does your site cover the topics it's trying to rank for?
I built the Topical Authority Map to answer that question visually. It crawls your site, groups your content into topic clusters, scores each cluster, and shows you where the gaps are.
What the Tool Does
When you enter your domain or sitemap URL, the tool runs through a five-step process:
- •Crawls your pages (up to 100 per scan). Pulls the title, headings, meta description, and body text from each page.
- •Runs topic clustering. Using TF-IDF analysis, it groups pages that share similar keywords and themes.
- •Builds an interactive graph. Each page becomes a node. Same-colored nodes belong to the same cluster. Internal links become connecting lines. Drag nodes, zoom, click for details.
- •Scores each cluster. Reflects page count, interlinking quality, and whether obvious subtopics are missing.
- •Flags problems. Orphan pages (no inbound links), thin clusters (only 1 to 2 pages), and disconnected content.
Crawl your site, see your content clusters, and find the gaps. Free, no signup.
Map Your Topical AuthorityWhat You'll Learn
After running a scan, the map tells you:
- •Which topics you own. Clusters with 5+ pages and strong interlinking show Google you're an authority on that subject.
- •Which topics are underdeveloped. A cluster with only 2 pages isn't a cluster. It's a missed opportunity.
- •Where your orphan pages are. Pages with zero inbound internal links aren't contributing to any cluster.
- •How your clusters connect. Well-connected clusters reinforce each other. Disconnected ones don't.
- •What to write next. The gap analysis tells you which subtopics would strengthen a cluster.
A Real Example
I ran this tool on one of my own e-commerce sites that had about 45 blog posts. From the outside, it looked like a decent content library. After mapping it, I saw the real picture:
I had 12 posts about Shopify SEO and they were all well-connected. That cluster was solid. But I also had 8 posts about email marketing that were barely linked to each other. Three of those were orphan pages. Google was treating them as isolated articles instead of a coherent body of work.
After spending a weekend adding internal links between the email marketing posts and publishing 3 new posts to fill the gaps, traffic to that cluster increased by about 35% over the next two months. I didn't build any new backlinks. I just showed Google that I actually knew the topic well enough to cover it thoroughly.
Tips for Building Topical Authority
The map gives you the data. Here's what to do with it:
- •Pick 3 to 5 core topics and go deep. It's better to have 15 posts on one topic than 3 posts each on 5 topics. Depth beats breadth.
- •Interlink everything within a cluster. Every post about a topic should link to at least 2 to 3 other posts about the same topic.
- •Create a pillar page for each cluster. A long overview page that links to every specific subtopic. This becomes the hub.
- •Fill the gaps the tool identifies. If your SEO cluster covers keyword research but nothing about technical SEO, that's the next article to write.
- •Revisit your map quarterly. As you publish new content, your clusters evolve. Run a fresh scan every few months.
Frequently Asked Questions
Up to 100 pages per scan. For sites with more than 100 pages, you can run multiple scans with different sitemap sections or focus on specific subdirectories. Most small to mid-size sites fit within the limit. Run it on your whole domain first to get the big picture, then drill into specific sections if needed.
It controls how similar two pages need to be to land in the same content cluster. Lower values create tighter clusters with very closely related pages. Higher values create broader groupings. Start with the default (0.15) and adjust from there. If your clusters feel too broad, lower it. If you're getting too many single-page clusters, raise it.
Yes. You can export the full cluster analysis as a CSV, including page URLs, cluster assignments, keyword data, and coverage scores. Useful for planning your content calendar or sharing the analysis with a team. The export works the same way across all the tools in the free suite.
No. The analysis runs during the scan and nothing is saved to any server. Your URLs, page content, and results are gone when you close the tab. I built all the tools this way so you don't have to worry about your site data being stored or shared.
The Internal Link Finder focuses on specific page-to-page linking opportunities with ready-to-use anchor text. The Topical Authority Map gives you a bird's-eye view of your entire content structure, showing clusters, gaps, and coverage scores. They work well together: use the map to plan your content strategy, then use the link finder to connect the pages you've written. I cover the linking side in detail in the internal linking guide.
Related Tools & Posts
Topical Authority Map Tool
Visualize your content clusters and find topic gaps.
Internal Link Finder
Find specific page-to-page linking opportunities.
Thin Content Detector
Find low word count pages that weaken your clusters.
How to Find Internal Linking Opportunities
After mapping your clusters, connect them with internal links.
See Your Content Structure
Paste your domain and get an interactive map of your content clusters, coverage scores, and content gaps. Free, no signup.
Map Your Topical Authority