How to design a crawlable site architecture

Executive summary

Crawlable architecture is shallow, logical and richly interlinked. Group pages into topic clusters with a pillar page linking to its supporting pages, keep everything within three clicks of the home page, and use plain crawlable links so authority and crawl attention flow to the pages that matter.

What this helps you decide

How to arrange pages and internal links so crawlers reach and prioritise your most valuable content.

Business problem

Sites grow by accretion until important pages sit five or six clicks deep, orphaned or buried under filters. Crawlers rarely reach them, authority never flows to them, and they underperform regardless of content quality.

Step-by-step process

1. 1
   Group pages into topic clusters

   Organise content into clusters, each with a pillar page covering the topic broadly and supporting pages covering subtopics, all interlinked.

2. 2
   Flatten the click depth

   Ensure every important page is reachable within three clicks of the home page; deep pages get crawled rarely and rank poorly.

3. 3
   Use crawlable links

   Build navigation and internal links as standard anchor elements with href attributes, not JavaScript click handlers crawlers cannot follow.

4. 4
   Design descriptive, stable URLs

   Use short, readable URLs that reflect the hierarchy, and avoid changing them casually since every change costs redirects and equity.

5. 5
   Eliminate orphans

   Cross-reference the sitemap against the internal link graph and add links to any valuable page nothing points to.

6. 6
   Add contextual cross-links

   Link related pages within body content, not just navigation, so authority and relevance flow between topically connected pages.

7. 7
   Maintain as you grow

   Review architecture whenever you add a section, so new content is slotted into clusters rather than dumped at the root.

Worked example

Checklist

• Group content into pillar-and-supporting topic clusters
• Keep every important page within three clicks of the home page
• Implement navigation as crawlable anchor links
• Use short, descriptive, stable URLs
• Find and fix orphan pages against the sitemap
• Add contextual body links between related pages

Common mistakes

• Relying on JavaScript-only navigation crawlers cannot follow
• Letting important pages sit five or more clicks deep behind filters
• Publishing new pages with no internal links pointing to them

30-minute experiment

KPIs to track

• Percentage of key pages within three clicks
• Number of orphan pages
• Crawl frequency of priority pages

FAQs