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Internal Link

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An internal link is a hyperlink that connects one page on a website to another page on that same website, as opposed to a backlink, which connects two different websites. Internal links are one of the main tools website owners use to guide visitors around a site and to help search engines discover and understand the relationships between pages.

Internal links serve two main purposes at once. For users, they create pathways between related content, such as linking from a blog post to a relevant product page or from one glossary entry to another.

For search engines, internal links act as a map of a site’s structure, showing which pages are most important based on how many other pages link to them and what anchor text is used to describe them. A well organized internal linking structure can help newer or less visible pages get discovered by search engine crawlers, since crawlers follow links to find and index content.

Example

A blog publishes a product roundup article and includes internal links to three individual product pages mentioned in the post, along with a link back to the site’s main category page. A visitor reading the roundup can click straight through to a product they are interested in, while a search engine crawling the roundup article discovers those three product pages through the links and gains a clearer sense of how the roundup and the product pages relate to each other.

Key characteristics

Stays within one site: Internal links point to pages on the same domain, unlike backlinks, which point to a different website entirely.
Supports navigation: Internal links help visitors move between related pages without relying on menus or search.
Distributes ranking value: Pages that receive many internal links from other pages on the site tend to be treated as more important by search engines.
Aids crawling and indexing: Search engine crawlers follow internal links to discover new or updated pages across a site.
Anchor text matters: The clickable text of an internal link gives both users and search engines context about the linked page’s topic.

Related terms

Backlink – a link from an external website, as opposed to an internal link, which stays within the same site.
On-page SEO – page-level optimization that commonly includes internal linking as one of its core practices.
Off-page SEO – the category of ranking factors, including backlinks, that sits outside a site’s own internal structure.

Frequently asked questions

Why are internal links important for SEO?

Internal links help search engines discover and understand the relationship between pages on a site, and they help distribute ranking value from well established pages to newer or less visible ones.

Do internal links affect how visitors use a website?

Yes, internal links give visitors a way to move between related pages, which can lower bounce rates and keep people engaged with more of a site’s content.

Is there a limit to how many internal links a page should have?

There is no strict limit, but a page with an excessive number of internal links can dilute the value passed to each linked page and make the page harder for visitors to read.

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FAQ

How many internal links should a page have?

There is no fixed number, but most well structured pages include somewhere between 2 and 10 internal links depending on the length and depth of the content. A short page with only 300 words may only need 2 or 3 relevant internal links, while a long form guide of 3000 words might reasonably include closer to 10. Adding far more than that can start to dilute the value passed to any single linked page and can overwhelm readers. The right number depends more on what genuinely helps the reader than on hitting a specific count.

Do internal links help with SEO rankings?

Yes, internal links help search engines discover new pages, understand how pages relate to each other, and distribute ranking value across a site. A page that receives internal links from 20 other pages on a site is generally seen as more important than one with only 1 or 2 internal links pointing to it. This is one reason SEO teams often build dedicated internal linking plans alongside content calendars. Strong internal linking can meaningfully improve how quickly new pages get indexed and how well they eventually rank.

What is the difference between an internal link and a backlink?

An internal link connects two pages within the same website, while a backlink connects a page on one website to a page on a completely different website. A site might have thousands of internal links but zero backlinks if no outside site has linked to it yet. Search engines treat the two very differently, since backlinks are generally seen as a stronger trust signal because they come from an independent source. Both link types are tracked separately in most SEO tools for this reason.

Should internal links open in a new tab?

Most SEO guidance recommends keeping internal links opening in the same tab, since this keeps the visitor within the site experience and preserves the browser back button for easy navigation. Opening internal links in a new tab can fragment a visitor session across multiple open tabs and is generally reserved for external links or downloadable files. A site that opens all 10 or more internal links on a page in new tabs risks cluttering the visitor browser and increasing confusion. Consistency across a site matters more than any single rule here.

How often should a site review its internal linking?

Many SEO teams review internal linking on a quarterly basis, especially after publishing 10 or more new pages that could benefit from being linked to or from existing content. A site with frequent content updates might review internal links monthly, while a smaller site publishing only a few articles a year might review just once or twice annually. Broken internal links, which can accumulate as pages get removed or restructured, are one of the main things these reviews catch. Regular review helps ensure that older, valuable pages continue receiving internal links as new content gets published around them.