`
from one URL on a site to another URL on the same site. Internal links form the graph that crawlers walk, that screen-reader users navigate, and that AI agents follow to gather context.
```
Read the XML sitemap spec
to see how this page is discovered.
```
## Why it matters
Three audiences read internal links differently:
**Crawlers** use them to discover pages and to weight importance. A page linked from the home page is considered more important than one linked only from a deep archive.**AI agents and answer engines** use anchor text as a strong signal for what the destination is about, often stronger than the destination’s own``
.**Humans** scan link text to decide whether the click is worth it.
Internal links are also the easiest SEO lever you fully control. External backlinks are won; internal links are decided.
## How to implement
Anchor text is the single most important variable.
**Use descriptive anchor text.**“XML sitemap spec” is good. “Click here” tells the user and the crawler nothing.** Vary anchor text naturally.**Link the same destination from different pages using slightly different phrasings. Identical anchors on every link looks templated.**Link to the canonical URL** of the destination, not a redirect. Every link to a redirect costs a hop.**Link to topically related content.** Each article should link to two to five other relevant pages on the site. A page with zero outbound internal links is an orphan from the crawler’s perspective even if it links inwards.**Avoid orphan pages.** Every URL in the sitemap should be reachable from at least one other page through normal navigation, not just from the sitemap itself.**Keep link depth shallow.** Pages more than three clicks from the home page get crawled and updated less often.**Cross-link from breadcrumbs.** They give crawlers a clean hierarchical view and let users escape upwards.**Open in the same tab unless there is a reason.**`target="_blank"`
is for downloads and third-party flows, not internal navigation.
Avoid linking inside long lists of navigation that repeat on every page. Those count, but contextual links inside body content carry more weight per link.
## Common mistakes
- “Click here” or “read more” used as the only anchor text in the body.
- Hundreds of footer links to every page on the site. Dilutes the signal and clutters screen-reader rotors.
- Linking to staging or preview URLs by accident.
- Building the entire navigation in JavaScript with no
`<a href>`
fallback. Crawlers and screen readers cannot follow it. - Pointing internal links at redirect chains created by an old migration.
- Using
`rel="nofollow"`
on internal links to “sculpt” ranking signals or save crawl budget. Google treats nofollow as a hint, not an instruction, so nofollowed pages can still be crawled and indexed through your sitemap or other links. It is not a crawl-control lever: to keep your own pages out of the crawl, Google’s guidance is a robots.txt`disallow`
, not`nofollow`
.
## Verification
- Crawl the site and check the orphan-pages report. Anything in the sitemap but not reachable through links needs a contextual link added.
- Use Search Console’s Links report to see the top linked-to pages. The list should match your idea of what is important.
- Check that anchor text varies and is descriptive — a crawler that exports a list of
`(anchor, target)`
pairs tells you a lot in one read.
## Related topics
## Sources & further reading
[Yoast — Internal linking for SEO](https://yoast.com/internal-linking-for-seo-why-and-how/)— Yoast[Google — Links and link building](https://developers.google.com/search/docs/crawling-indexing/links-crawlable)— Google Search Central[Google — Qualify your outbound links](https://developers.google.com/search/docs/crawling-indexing/qualify-outbound-links)— Google Search Central[MDN — Creating hyperlinks](https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Structuring_content/Creating_links)— MDN