Crawl Depth
In one line
Crawl depth is how many clicks it takes to reach a page from the homepage — the deeper a URL sits, the lower its crawl priority and perceived importance tend to be.
Going deeper
Crawl depth is usually counted with the homepage at zero — how many clicks does it take to reach a given page? Search engines treat shallower pages as more important, so a revenue page sitting six clicks deep is silently penalised.
The practical workflow is to crawl the site with something like Screaming Frog or Sitebulb, visualise the depth distribution, then reshape internal links and category structure to pull priority pages within three clicks. A tweak to the main nav, the footer or a related-content module is often enough to drop depth by a level or two.
The same logic carries over to AI search. AI crawlers also use the link graph to weigh importance, and good content buried deep simply never makes it into the citation pool.
Related terms
Site Architecture
Site architecture is how you organise pages into categories and connect them via internal links — the structure that tells both search engines and AI what your site is really about.
SEOInternal Linking
Internal linking is the practice of connecting pages within the same domain — and it shapes crawl efficiency, how authority flows between pages, and how users move through the site.
SEOOrphan Page
An orphan page is a URL that no other page on the site links to — invisible to internal navigation and badly disadvantaged in discovery, evaluation and ranking.
SEOCrawl Budget
Crawl budget is the amount of resource a search engine is willing to spend crawling a single site over a given period — a critical factor for indexing efficiency on large sites.
SEOSite Migration
Site migration is any change that touches the substance of a site — domain, platform, URL structure, redesign — and historically the project where SEO equity is most at risk.
How does your brand show up in AI answers?
Villion measures how your brand appears across ChatGPT, Perplexity and AI Overviews, then automates the work that lifts citation rate and share of voice.
Get a free audit