If you want your website to rank in Google, you need to understand two fundamental categories of SEO: on-page and off-page. On-page SEO is about the content and structure of your own pages. Off-page SEO is about everything that happens outside your website that signals to Google how important and trustworthy your content is. The most critical component of off-page SEO is backlinks.

How Google Ranks Pages

When you search for a keyword phrase in Google, the engine returns results in a specific order. Google is trying to put the most useful, most authoritative results at the top because better results mean more people use Google. To determine that order, Google evaluates at least two things: how relevant your page content is to the search query (on-page SEO) and how authoritative your page is in the eyes of the web (off-page SEO).

Authority is determined largely by how many quality pages link to yours and who those linking pages are. Google's original insight, dating back to Larry Page and Sergey Brin's work at Stanford in the 1990s, was that a link from one page to another is essentially a vote of confidence. The more votes a page accumulates, and the more authoritative the voters are, the higher that page should rank.

Why Backlinks Matter

Imagine two pages about dog training with similar on-page optimization. The page with backlinks from well-known pet care websites, veterinary blogs, and news outlets will outrank the page with no incoming links or links only from obscure, low-quality sites. Google figures that if credible sources took the time to link to a page, it probably contains valuable information.

Not all backlinks carry equal weight. A link from a high-authority site like a major news outlet or a well-established industry blog passes significantly more ranking power than a link from a brand-new blog with no authority of its own. This is why link building strategy matters. Ten links from authoritative, relevant sites will do more for your rankings than a hundred links from low-quality directories.

Understanding the Nofollow Attribute

When a page links out to other pages, it passes some of its authority to those pages. But what if a site wants to link to another page without passing authority? That is where the rel=”nofollow” attribute comes in.

Adding nofollow to a link tells Google that you are linking to the page but you do not want to vouch for it. This was originally introduced to combat comment spam, where people would leave links on blogs and forums purely to gain SEO value. When a link has the nofollow attribute, Google traditionally does not pass ranking authority through that link.

In practice, the nofollow landscape has evolved. Google now treats nofollow as a hint rather than a directive, meaning they may choose to count some nofollow links for ranking purposes. Google also introduced two additional link attributes: rel=”sponsored” for paid or affiliate links, and rel=”ugc” for user-generated content like comments and forum posts.

What This Means for Your Strategy

For your own link building efforts, focus on earning dofollow links from authoritative, relevant sites. These are the links that move the needle for your rankings. Guest posting on quality sites, creating genuinely link-worthy content, building relationships with other creators in your niche, and getting mentioned in industry publications are all effective approaches.

Do not ignore nofollow links entirely, though. Links from social media profiles, forum participation, and blog comments may not pass traditional SEO authority, but they do drive referral traffic and build brand awareness. A balanced backlink profile with a mix of followed and nofollowed links actually looks more natural to Google than a profile composed entirely of dofollow links.

The bottom line: off-page SEO is about building genuine authority through quality backlinks. There are no sustainable shortcuts. Create content worth linking to, build real relationships in your industry, and the links will follow.