A sitewide link is a link that appears on every page, or nearly every page, of a website, because it sits in a part of the page template that every page shares. Typical places are the footer, header, sidebar, main navigation and blogroll. For example, a web design agency's "Website by Studio X" credit in a client's footer appears on every page of that client's site, so it is a sitewide link.

Sitewide links come in two kinds that need very different treatment:

  • Internal sitewide links point to the same site, such as a menu link to the About page. Every site has these, and they are how navigation works.
  • External sitewide links point to another site, such as a design credit, a sponsor's logo, a partner link or a blogroll entry. These are the ones SEOs mean when they say "sitewide backlink".

Sitewide links are not bad for SEO in themselves, but external sitewide links placed to manipulate rankings break Google's spam policies. Google's list of link spam examples includes "widely distributed links in the footers or templates of various sites" [1], and "keyword-rich, hidden, or low-quality links embedded in widgets that are distributed across various sites" [1].

Read that wording closely. The policy targets links spread across the templates of various sites, meaning a link pattern repeated on many different websites, not a single site linking to a partner in its footer. One honest, unpaid sitewide link from a related business is ordinary. The same link sold to every site that would take it, or built into a free theme or widget that spreads it across thousands of sites, is a link scheme.

Paid sitewide links are acceptable to Google only when they cannot pass ranking credit. Google says buying and selling links for advertising is a normal part of the web as long as the links are qualified with rel="nofollow" or rel="sponsored" [1].

A sitewide link adds one backlink for every page it appears on but only one referring domain, so it inflates backlink counts without adding breadth. A footer link on a site with 5,000 pages shows up in SEO tools as about 5,000 backlinks from one referring domain.

That makes sitewide links the most common reason a site's backlink and referring domain numbers sit far apart. When a backlink report shows a large total from very few domains, sort the referring domains by link count. The handful at the top are almost always sitewide links, and they tell you little about how many sites actually recommend you.

Why do sitewide links carry anchor text risk?

Sitewide links carry anchor text risk because the same anchor is repeated on every page, so one link can dominate a site's anchor text profile. A footer link reading "best plumber Denver" on 5,000 pages produces 5,000 exact-match anchors from one site.

Ahrefs' 2019 study of 384,614 ranking pages found the median share of exact-match anchors across all ranking positions was zero [5]: pages that rank do not typically carry a pile of keyword anchors. A sitewide link with a keyword anchor creates exactly the pattern that natural link profiles lack. Branded anchors, such as the company name, avoid the problem.

Google's treatment of sitewide links shifted in 2012, when Penguin began targeting manipulative links, and again in 2016, when Penguin started discounting such links in real time. Before Penguin, sitewide footer and blogroll links were a common way to buy volume.

2012: Penguin targets link schemes

Google launched Penguin on April 24, 2012 [3]. The update affected about 3.1% of English queries and targeted link manipulation including link buying, link farming and automated links [3]. Bought sitewide links fall squarely under link buying.

2016: Penguin runs in real time and discounts links

On September 23, 2016, Penguin became part of Google's core algorithm and began running in real time [3]. Penguin 4.0 discounts manipulative links, meaning it ignores them so they no longer count toward rankings [3]. For most sites, a spammy sitewide link is now more likely to be ignored than to trigger a penalty, but a manual action remains possible for clear link schemes [1].

Today: footers and templates named in the spam policies

Google's current spam policies, last updated August 28, 2026, name widely distributed footer and template links, and links embedded in distributed widgets, as link spam [1].

The difference between a sitewide link and a footer link is that "sitewide" describes how many pages a link appears on, while "footer" describes where on the page it sits. Most footer links are sitewide, because the footer is shared by every page. But a sitewide link can also sit in a header, sidebar or menu, and a footer link can appear on a single page if that page has its own footer. See the footer link entry for footer-specific risks.

Sitewide linkFooter link
DescribesHow many pages carry the linkWhere the link sits on the page
LocationsFooter, header, sidebar, menu, blogrollFooter only
Usually both?Most footer links are sitewideNot every sitewide link is in a footer

No published evidence shows that a sitewide link passes more ranking value than a single in-content link from the same site, and Google has never said it does. Google does not publish how it weighs repeated links from one domain. Counting a sitewide link as thousands of votes is a tool artifact, not a known Google behavior.

What is clear is that a sitewide link is one link among many on each page. HTTP Archive's 2024 Web Almanac found the median page carries 41 internal links and 6 external links [4], so a sitewide footer link shares each page with dozens of other links.

What you should do about sitewide links depends on whether they are on your site or point to it:

  • Credits you place on client sites. Use a branded anchor, such as the agency name, and rel="nofollow" if the client did not freely choose it. Google lists requiring a link through a contract "without allowing a third-party content owner the choice of qualifying the outbound link" as link spam [1].
  • Sponsor, partner and advertiser links on your site. Mark them rel="sponsored" [2].
  • Your own navigation. Leave internal sitewide links as they are. They help visitors and crawlers find your important pages.
  • Sitewide backlinks pointing to you. A single unpaid sitewide link from a relevant partner needs no action. If you bought keyword-anchored sitewide links, ask for them to be removed or marked sponsored.

Never buy sitewide links to pass ranking value. They are named in Google's spam policies, they are easy for Google to spot because the pattern repeats on every page, and since 2016 the most likely outcome is that Google ignores them [3].