What Are Backlinks?
A backlink (also called an inbound link, incoming link, or external link) is a hyperlink from one website that points to a page on a different website. When Website A includes a clickable link leading to a page on Website B, Website B receives a backlink from Website A.
From a technical standpoint, a backlink is just an HTML anchor tag: <a href="https://yoursite.com/page">anchor text here</a>. When a user clicks the anchor text, they are taken to your page. When a search engine crawler follows that link, it signals to Google that someone else found your page valuable enough to link to.
Backlinks are distinct from internal links (which connect pages within the same site) and from outbound links (links you place on your site pointing to other sites). The term "backlink" always refers to links coming in from an external domain.
Key Takeaway
A backlink is a vote of confidence from one site to another. Search engines use backlinks as a key signal of a page's credibility, authority, and relevance — which directly influences how high that page ranks in search results.
Why Backlinks Matter for Rankings
To understand why backlinks matter, you need to understand PageRank — the algorithm Google co-founders Larry Page and Sergey Brin developed at Stanford in the 1990s that became the foundation of Google Search.
The core insight of PageRank was simple but powerful: a web page is important if other important pages link to it. Instead of just analyzing a page's content, Google counted links as votes. A link from a highly-linked page passed more authority than a link from an obscure page. This created a recursive, self-reinforcing measure of web authority.
While Google's algorithm has evolved enormously since 1998 — now incorporating hundreds of signals including content quality, user experience, and entity recognition — backlinks remain one of the most heavily weighted ranking factors. Multiple industry studies consistently show a strong correlation between the number of high-quality referring domains and Google ranking positions.
What Backlinks Tell Google
It's worth noting that not all backlinks are equal. A single link from a major industry publication (high authority, highly relevant) can have more impact on your rankings than hundreds of links from irrelevant, low-quality directories. Understanding what makes a backlink valuable is just as important as knowing you need them.
Types of Backlinks
Not all backlinks are created equal — and understanding the differences helps you prioritize which links to pursue and which to ignore (or disavow).
Dofollow vs. Nofollow
Dofollow Links
The default link type. Dofollow links pass PageRank (link equity or "link juice") from the linking page to the linked page. They directly contribute to the linked page's authority and ranking power. Most editorial links — when a site links to yours because they genuinely want to — are dofollow.
Nofollow Links
Links with the rel="nofollow" attribute. Google treats them as a hint (not a hard rule) not to pass PageRank. Common on comment sections, forums, and user-generated content. While they don't pass direct authority, they can still drive referral traffic and contribute to a natural link profile.
Variants: rel="sponsored" (paid links), rel="ugc" (user-generated content)
By Acquisition Method
Editorial Links
Highest valueEarned organically when a writer or editor chooses to link to your content because it genuinely helps their readers. These are the gold standard — they signal real endorsement and carry the most ranking power.
Guest Post Links
High valueYou write an article for another site's blog and receive a link back to your site in the author bio or within the content. Effective when the host site is genuinely relevant and authoritative. Avoid low-quality 'article farm' guest posting — Google can detect and discounts these.
Resource Page Links
High valueMany sites maintain 'resources' or 'links' pages listing helpful tools and content for their audience. Getting listed on a relevant, curated resource page is a natural and respected way to earn links.
Directory Links
Low to medium valueListings in industry-specific directories can provide genuine value, especially locally. However, generic web directories with no editorial standards are largely ignored by Google and not worth pursuing.
Paid / Sponsored Links
Must be disclosedLinks you pay for must carry the rel='sponsored' attribute under Google's guidelines. Undisclosed paid links are a violation of Google's webmaster guidelines and can result in a manual penalty. Always be transparent about paid placements.
What Makes a High-Quality Backlink?
Understanding what makes a backlink valuable helps you evaluate link building opportunities and prioritize your outreach efforts. Here are the key quality signals:
Authority of the Linking Domain
A link from a site with a high Domain Rating (DR 70+) carries significantly more weight than a link from a new blog with DR 5. Sites that are themselves well-linked earn more authority to pass on. Before pursuing a link, check the linking domain's DR in Rank Crown's Site Explorer.
Topical Relevance
Google's algorithms heavily weight topical context. A link from a highly relevant industry site (e.g., a digital marketing blog linking to your SEO tool) carries more SEO value than a link from an unrelated site (e.g., a cooking blog linking to your SEO tool), even if both have similar DR scores.
Anchor Text
The clickable text of the link signals to Google what the linked page is about. Descriptive, keyword-rich anchor text ('best keyword research tool') is more informative than generic text ('click here'). However, over-optimized exact-match anchor text at scale is a manipulation signal — a natural backlink profile has varied anchor text.
Link Placement on the Page
Links embedded naturally within the main body content of an article carry more weight than links buried in footers, sidebars, or author bio sections. Contextual links — where surrounding content is relevant to your linked page — are the most valuable placement.
Traffic of the Linking Page
Links from pages that receive real organic traffic from Google are a stronger quality signal. A link from a page ranking on page one for competitive queries likely carries more authority than a link from an orphan page nobody reads — even on an otherwise strong domain.
Editorial Standards of the Linking Site
Sites with genuine editorial review, real authors, and quality standards give more trustworthy links. If a site links to anyone who pays or submits content without review, Google likely discounts those links heavily.
How to Check Your Backlink Profile
Regularly auditing your backlink profile is essential for two reasons: to understand your current link authority, and to catch toxic or spammy links before they harm your rankings. Here's how to do a comprehensive backlink analysis using Rank Crown:
Get a full backlink overview
Open Rank Crown's Site Explorer and enter your domain. The overview shows your Domain Rating (DR), total referring domains, total backlinks, and your organic traffic estimate. The referring domains count is the most important — it's the number of unique websites linking to you.
Analyze referring domains by quality
In the Referring Domains report, sort by DR to see your highest-authority links first. Are there well-known publications, industry sites, and relevant blogs in your top 20? If your best links are DR 5–15 directories, there's significant room to improve your link profile.
Review your anchor text distribution
Check the Anchors report. A natural backlink profile has diverse anchor text — a mix of branded (your company name), naked URLs (https://yoursite.com), generic ('click here', 'read more'), and some descriptive keywords. If 70%+ of your anchors are exact-match keywords, that's an over-optimization signal.
Check for broken backlinks
Filter for backlinks pointing to pages that return 404 errors. These are lost links — someone is linking to your site, but that page no longer exists. Redirect those URLs to relevant live pages and recapture that link equity.
Monitor new and lost backlinks
Track links gained and lost over time. Sudden drops in referring domains can signal that authoritative sites removed links to you — worth investigating. Sudden spikes in low-quality links can indicate a negative SEO attack.
Link Building Strategies That Work in 2026
Link building is the practice of actively earning backlinks from other sites. The best strategies earn links through genuine value — creating content, tools, or relationships that make other sites want to link to you. Here are the most effective tactics:
Guest Posting on Relevant Blogs
MediumIdentify blogs in your niche that accept contributor articles. Pitch them a genuinely useful topic — not a thinly veiled product pitch. Write a high-quality article and include one contextual link to relevant content on your site. The key is targeting sites your audience actually reads, not just sites with high DR.
Broken Link Building
MediumFind pages in your industry that link to resources that no longer exist (404 errors). Use Rank Crown to identify these broken outbound links. Then reach out to the site owner, let them know about the broken link, and suggest your relevant content as a replacement. You're helping them fix a problem — a natural, non-pushy outreach angle.
Digital PR and Data Studies
HardCreate original research — surveys, industry reports, or unique data analyses — and pitch them to journalists. Journalists need data and statistics for stories; if yours is compelling, they'll link to it. A single well-placed study can earn dozens of editorial links from news sites and industry publications.
HARO (Help a Reporter Out) / Connectively
Easy–MediumSign up for journalist query services (HARO, Connectively, Qwoted). Journalists post questions looking for expert sources; you respond with a useful, expert quote. When they publish the article, they link back to you. This is one of the most legitimate, scalable ways to earn editorial links from major publications.
Content Marketing (Linkable Assets)
HardCreate comprehensive resources that people naturally link to as references: ultimate guides, free tools, original data, calculators, templates, interactive content, or visual explainers. The investment is high, but the best assets can earn hundreds of links over years without active outreach.
Competitor Backlink Replication
EasyIn Rank Crown, find your top-ranking competitor and analyze their backlink profile. Identify the sites linking to them — then pitch those same sites with reasons to also link to your content. If a site links to your competitor's article on a topic, and you have an even better article on the same topic, you have a strong case for a link.
Toxic Backlinks and How to Disavow Them
Not all backlinks help you — some can actively harm your rankings. Toxic backlinks come from spammy, irrelevant, or manipulative sources. While Google is generally good at ignoring low-quality links, a large concentration of toxic links — especially if it looks like an attempt to manipulate rankings — can trigger a manual penalty.
Signs of a Toxic Backlink
The Disavow Process
If you identify toxic links that you cannot get removed by contacting the linking site directly, Google provides a Disavow Tool in Search Console. Submitting a disavow file tells Google to ignore specific links or entire domains when evaluating your site. Use it cautiously:
Export your full backlink list from Rank Crown's Backlink Analysis
Filter for low-quality, irrelevant, or suspicious links
For each toxic domain, attempt to contact the webmaster and request removal first
For links you can't remove, compile them into a disavow.txt file in Google's required format
Upload the file to Google Search Console's Disavow Tool
Wait 3–6 weeks for Google to re-process your link profile
Caution: Don't disavow links unless you have clear evidence they're harmful. Disavowing good links by mistake can hurt your rankings. Most sites don't need to use the disavow tool unless they have a history of manipulative link building or are under a manual penalty.
Backlink Metrics Explained
Several third-party metrics help you evaluate link authority quickly. These are not Google's actual PageRank (which is not publicly disclosed), but they are useful proxies. Here are the key ones you'll encounter:
Domain Rating (DR)
Rank Crown / AhrefsA 0–100 score representing the strength of a website's entire backlink profile. Higher DR means more authority to pass through links. DR 50+ is generally considered strong for most niches. Use this to evaluate the authority of potential link partners.
Domain Authority (DA)
MozMoz's equivalent of DR — a 0–100 score predicting ranking ability based on link profile strength. Historically the most widely cited metric, though DR has become increasingly common. Both are useful comparisons, but neither is a Google ranking factor.
Referring Domains
UniversalThe count of unique websites that have at least one link pointing to your site. This is more meaningful than total backlinks — 500 links from 500 different sites is far more valuable than 500 links from the same site. Tracking referring domain growth over time is the best measure of your link building progress.
URL Rating (UR)
Rank Crown / AhrefsThe link authority score of a specific page (not the whole domain), on a 0–100 scale. UR is more directly relevant to how well an individual page will rank. High UR means that page has many high-quality inbound links.
Spam Score
MozA metric estimating the likelihood that a site has spammy characteristics, based on patterns correlating with penalized sites. High spam score links (30%+) are candidates for disavowal. Use this in combination with a manual review of the site — automated scores can produce false positives.
Link Velocity
Tracked over timeThe rate at which a site gains or loses backlinks over time. Sudden, unnatural spikes in link acquisition can trigger algorithmic scrutiny. Steady, consistent link growth looks natural and is preferred. Monitor this trend in Rank Crown's referring domains over time chart.
Analyze Your Backlink Profile
Rank Crown's Backlink Analysis shows you every link pointing to your site — who's linking, with what anchor text, from what DR, and whether links are dofollow or nofollow. Analyze your profile, identify gaps, and find the same link sources your competitors use.