Internal Linking: The Free SEO Tactic You're Ignoring
There is an SEO tactic that costs nothing, takes minutes, requires zero technical knowledge, and is ignored by most small business websites. It is internal linking — adding links from one page on your site to another page on your site.
Most business websites have the same pattern: homepage links to service pages, service pages link to the contact page, and that is it. Blog posts link to nothing. Service pages do not link to each other. The homepage does the heavy lifting while every other page sits in isolation.
This means Google has a harder time finding your pages, your visitors have fewer paths to explore, and the authority your homepage earns from backlinks does not flow to the pages that need it. All of this is fixable in an afternoon.
Quick Navigation
- What Internal Links Are and Why They Matter
- How Google Uses Internal Links
- The Internal Linking Audit
- A Simple Internal Linking Strategy
- Common Internal Linking Mistakes
- How to Find Linking Opportunities
- Frequently Asked Questions
What Internal Links Are and Why They Matter
An internal link is a hyperlink from one page on your website to another page on the same website. The link you just read in the table of contents? Those are internal links. The navigation menu at the top of your site? Internal links. A blog post that references another blog post? Internal link.
Internal links serve three purposes:
1. Help Google find your pages. Google discovers pages by following links. If a page has no links pointing to it (called an "orphan page"), Google may never find it. Every internal link is a path Google can follow.
2. Pass authority between pages. When your homepage earns backlinks from other websites, that authority can flow to your other pages through internal links. A service page with three internal links from other pages on your site carries more weight than one with zero.
3. Keep visitors on your site. When a blog post links to a relevant service page, some visitors will click through. Without that link, they read the post and leave. Internal links create journeys instead of dead ends.
How Google Uses Internal Links
Google's crawler follows links to discover and understand your website. The structure of your internal links tells Google several things:
Which pages are important. Pages with many internal links pointing to them are treated as more important than pages with few or no links. This is why your homepage usually has the highest authority — every page links to it.
How pages relate to each other. When your blog post about title tags links to your post about striking-distance keywords, Google understands these topics are related. This builds topical clusters that strengthen your authority in those areas.
What the linked page is about. The text you use in the link (called anchor text) tells Google what the destination page covers. A link that says "Google Search Console guide" is more useful to Google than a link that says "click here."
The Internal Linking Audit
Before adding links, understand what you have. Here is a quick audit:
Step 1: List Your Most Important Pages
Write down the 5 to 10 pages that matter most to your business. For most small businesses, this includes:
- Homepage
- Main service or product pages
- Key blog posts that drive traffic
- Contact or pricing page
Step 2: Check How Many Internal Links Point to Each
For each important page, use Google: search site:yourdomain.com "page title or keyword" to see which of your other pages mention the topic. Each mention is a potential internal link.
Or ask Brass-SEO: "Which of my pages get the most search traffic?" Cross-reference that with which pages have the fewest internal links. High-traffic pages with few internal links are leaving authority on the table.
Step 3: Identify Orphan Pages
Orphan pages have no internal links pointing to them. Google may not know they exist. Check GSC > Indexing > Pages for pages marked "Crawled - currently not indexed" — orphan pages are more likely to have indexing problems.
A Simple Internal Linking Strategy
You do not need a complex system. Here is a straightforward approach:
Rule 1: Every Blog Post Links to at Least One Service Page
When you write about a topic related to your business, link to the relevant service or product page. This creates a path from informational content to commercial content.
Example: A blog post about how to tell if your SEO is working links to the SEO analysis page because readers who want help measuring their SEO are potential customers.
Rule 2: Every Blog Post Links to 2-3 Related Blog Posts
When you mention a topic you have written about before, link to that post. This creates a web of related content that Google recognizes as a topical cluster.
Look for natural connections:
- Posts that share a tag or category
- Posts that cover a subtopic of the current post
- Posts that provide background context for what you are writing about
Rule 3: Service Pages Link to Relevant Blog Posts
Your service pages should not be dead ends. Link to blog posts that provide more detail, explain concepts, or show examples. This serves both visitors (more information) and Google (connecting your commercial and informational content).
Rule 4: Use Descriptive Anchor Text
Good: "See our guide to keyword targeting for small businesses"
Bad: "See our guide here"
The anchor text tells Google what the destination page is about. Descriptive anchor text reinforces the target page's relevance for those keywords.
Common Internal Linking Mistakes
Linking only from navigation. Your menu and footer create internal links, but they are site-wide and every page has them. Contextual links within content carry more SEO value because they are specific and relevant to the surrounding content.
Using the same anchor text every time. If every link to your services page says "our services," that is unnatural. Vary the anchor text: "our SEO analysis tools," "get your site analyzed," "see how it works." Natural variation signals honest linking.
Linking too many times to the same page from one post. Two or three links to the same destination from one post is fine. Ten is excessive and looks spammy. Link where it is natural and useful for the reader.
Forgetting to update old posts. When you publish a new blog post, go back to 2 or 3 older posts that cover related topics and add a link to the new post. This is the most overlooked step in internal linking, and it takes 5 minutes.
Creating links that do not help the reader. Every internal link should make sense in context. If a reader would wonder "why is this linked?", the link does not belong. Links should help readers find related, useful information.
How to Find Linking Opportunities
Here is a practical workflow you can do in 30 minutes:
1. Pick a target page — Choose an important page that you want to strengthen. A service page, a key blog post, or your pricing page.
2. Search your own site — Google site:yourdomain.com "keyword related to target page". This shows every page on your site that mentions the keyword.
3. Add links — On each page that mentions the keyword, add a link to your target page. Use the keyword mention as the natural anchor text.
4. Check the target page — Make sure the target page also links out to related content. It should not be a dead end.
5. Repeat monthly — When you publish new content, add links to and from existing pages. Over time, your internal link structure builds naturally.
For identifying which pages need the most attention — including pages with indexing issues, low engagement, or missed keyword opportunities — Brass-SEO can cross-reference your search data with page performance to show you where to focus.
Frequently Asked Questions
How many internal links should a page have?
There is no exact number. A 500-word blog post might have 3 to 5 internal links. A 2,000-word guide might have 10 to 15. The right number is however many genuinely help the reader find related content. If a link feels forced, remove it. If a mention naturally connects to another page, add the link.
Do internal links help with indexing?
Yes. Google discovers pages by following links. A page with no internal links pointing to it is harder for Google to find and may not get indexed. Adding internal links from established pages to new or orphan pages helps Google discover them faster. This is one of the recommended steps for fixing indexing issues.
Should I use nofollow on internal links?
Almost never. The nofollow attribute tells Google not to pass authority through the link. For internal links, you want authority to flow between your pages. The rare exception is links to login pages or user-generated content, but for standard internal linking between your own content, never use nofollow.
How do internal links compare to backlinks?
Backlinks (links from other websites to yours) and internal links serve different purposes. Backlinks bring authority from external sources. Internal links distribute that authority within your site. You need both, but internal links are entirely within your control — you can add them today for free. Backlinks depend on other people deciding to link to you. If you want to earn more backlinks without cold outreach, see our guide on link building without cold emails.
Should I go back and add internal links to all my old posts?
Yes, gradually. Start with your highest-traffic posts and your most important service pages. Add links between content that is naturally related. Do 5 to 10 posts per week and you will have a solid internal link structure within a month. Each time you publish a new post, go back to 2-3 old posts and add a link to the new one.
More on Content Architecture
This post covers the tactic. For the strategic layer above it — link equity flow, hub-and-spoke structure, and orphan page prevention — see Internal Linking Strategy: Beyond Adding More Links, part of Content Architecture.