internal link optimisation for seo

Internal Link Optimisation for SEO: The Complete Guide

Wayne Barker
Updated March 13, 2026

In the fast-moving world of SEO, sometimes fundamentals get forgotten. Internal links are often an element of websites that we can take full control of, and internal link optimization can often have a significant impact on rankings. So it begs the question, why don't we focus on it more than we do?

This guide looks at why internal linking is important for SEO, what you need to consider when developing an internal linking strategy, then goes on to demonstrate some of the techniques you can use to optimize your own internal links.

Thanks to Ramona Joita, Liz Bowers, Kelly-Anne Crean, Jolle Lahr-Eigen, Maeva Cifuentes, and Sophie Roberts from the Women in Tech SEO community who also share some fresh 2026 insights in this article.

Table of contents

What is internal linking?

At its simplest, an internal link is a link from one page on your website to another webpage on your site.

Why is internal linking important for SEO?

Many factors go into how search engines crawl, index and rank websites. Internal linking is up there as one of the most important. It should also be noted that creating and optimizing internal links is one of the easiest things you can do on your site to help with indexing and ranking.

So why is internal linking good for SEO?

1. It can help existing content rank better

Search engines use the position of the link, the number of internal links, and the anchor text of those links, to help them understand what a given page is about and how important particular pages might be in the overall structure of the site. If you've read Maret's post on topic clusters, you'll understand the importance of using content structure and internal linking to build themes and contextual flow between them.

Through deliberate and smart internal linking, you can help the pages that you want to rank higher… well, rank higher.

2. It can help new content rank faster

While search engines - particularly Google - are good at finding new content fast, it doesn’t mean that content’s going to rank right away.

Say you have a piece of new content that you believe will do well - or is particularly important to your business or SEO strategy. Internal links tell Google “hey, this page is important. Rank me.”

So don't just press the publish button and hope for the best.

3. It helps you build topical authority

Google doesn't just use internal links to assess individual page importance, it uses them to understand how your content relates to itself. A tightly linked cluster of pages on the same topic signals that you actually know what you're talking about, not just that you've published something on it.

The way most SEOs structure this is through pillar and cluster content. The pillar page is the broad, comprehensive treatment of a topic. The cluster pages are the specific, in-depth pieces covering subtopics within it. You link between them - cluster pages link up to the pillar, and the pillar links out to the clusters - and the whole thing reinforces the topical signal Google picks up.

Common internal linking issues

Both internal links and backlinks can affect the ranking of your site. Internal links are important for usability and keeping people on your site. They’re also valuable for SEO.

Here’s a few tips and tricks for ensuring your internal links are giving you maximum value:

Finding pages with too many or too few internal links

First, locate pages with too few internal links pointing to them. Additionally, consider pages with too many internal links. Are some less important pages benefiting from a greater number of internal links than your more important pages? If so, you might want to reduce the amount of links.

With Sitebulb

  1. Head over to the best website audit software ever and create a project for the site you’re working on.
  2. Sitebulb has an in-built website link crawler, so just head over to the Links section and click that.
  3. Find the right data.
  4. Check the graph called Incoming Internal Followed Links.

With Screaming Frog

  1. Fire up Screaming Frog and pop your URL into the box at the top of the tool.
  2. Head over to the Internal tab. Filter by HTML and then click Export.

Finding pages too deep within your website

The deeper a page is on a site, the less chance it will have of ranking well due to diluted link equity. Finding deep pages and linking internally to them is super important. Here are a few ways you can do it:

With Sitebulb

  1. Crawl your site with Sitebulb.
  2. Head over to the Audit Overview tab.
  3. Scroll down to the Crawled URLs by depth section.

With Screaming Frog

  1. Fire up Screaming Frog and enter your URL.
  2. Head over to the Internal tab. Filter by HTML and then click Export.

Finding anchor text optimization opportunities

Anchor text is critical when working on your internal link optimization. You can take the target keywords for any given page on your site and find mentions of those keywords on other pages to add context to links.

With Sitebulb

  1. Fire up the crawler and set up a project if you haven't already.
  2. Set the crawler to find anchor link opportunities.

Finding internal link opportunities with Google

  1. Enter site:yourdomainname.co.uk "keyword that you want to rank for" into Google.
  2. Check the pages that include the phrase.

How to prioritize internal link optimization opportunities

Consider the following:

Presenting internal link optimization opportunities to clients

  1. Tell a story.
  2. Show your data—utilize graphs and visuals.
  3. Use PowerPoint to present your findings concisely.
  4. Consider presenting in person via Zoom or Google Meet.
  5. Leverage case studies to demonstrate the impact.

Implementation methods for internal link optimization

Manually Adjusting Links

Changing the Existing Template

Dynamic Link Generation

Using Breadcrumbs

The End

That was a huge overview on internal linking for SEO. For further insight, check out the guide on how to find internal link optimization opportunities with Sitebulb.

Unrepentant long-time SEO, consultant at Boom Online Marketing, and guest writer for Sitebulb.