How Site Pagination and Click Depth Affect SEO - An Experiment

This SEO case study documents a successful optimization initiative, providing actionable insights for practitioners. The documented approach demonstrates how strategic SEO implementation drives measurable results.

Initial Situation

Understanding the starting point is essential context for evaluating any case study. This documentation covers the initial challenges, competitive position, and business objectives that shaped the SEO strategy.

Strategy and Approach

The strategic approach combined multiple SEO disciplines to address identified opportunities. Key decisions around prioritization and resource allocation provide a template for similar initiatives.

Implementation

Moving from strategy to execution required specific technical implementations, content development, and process changes. This case study documents the practical steps that translated strategy into action.

Results and Learnings

The outcomes demonstrate effectiveness through measurable improvements in rankings, traffic, and business metrics. Analysis of successes and challenges provides learning value for practitioners.

Case studies like this contribute to the SEO knowledge base, helping practitioners learn from documented real-world experiences.

Source: https://www.portent.com/blog/seo/pagination-tunnels-experiment-click-depth.htm

Practitioner Commentary

Pagination looks harmless because it is so familiar. A category with hundreds of items breaks into pages, each linking to the next, and users click through happily. The problem is what that structure does to depth. If the only way to reach page fifty is to pass through the previous forty nine, then the items on page fifty sit fifty clicks from the category entrance. That is the tunnel, and search crawlers experience it the same way a patient visitor would.

Two things follow. First, crawl budget gets spent walking the sequence rather than reaching valuable content, which is wasteful on large catalogs. Second, the deepest items inherit almost no internal authority and are crawled rarely, so they refresh slowly and can quietly drop out of the index. This is the same depth problem described in the discussion of page depth as a ranking factor, seen from the angle of list templates.

The fix is to give crawlers shorter routes. Sub category pages, filtered landing pages built for real demand, and contextual links from editorial content all reduce the number of hops to reach popular items. A well designed hub can turn a fifty click journey into a two click one. Larger page sizes and view all pages, where performance allows, also compress the tunnel. The point is not to remove pagination but to stop it being the only path.

Measurement makes this concrete. Crawl the site, record the depth of your item pages, and note which sit far down the sequence. After you add hub and category links, crawl again and compare. When the deep tail moves closer to the homepage, you have shortened the tunnel. For the wider set of structural levers that pair with this work, see our notes on lesser known SEO tips.

What Has Changed Since This Was Published

Google confirmed some years ago that it no longer uses rel equals next and rel equals prev as an indexing signal, so those tags are not a substitute for good linking. That change makes the structural argument stronger, not weaker, because the burden of exposing deep items now rests entirely on your internal links. Infinite scroll and JavaScript driven listings have also spread, which can hide items from crawlers unless paginated URLs remain reachable. The practical advice is the same: give important items a short, crawlable path that does not depend on walking the whole sequence.

Tunnel Depth Versus a Flatter Path

Frequently Asked Questions