Backlink Checker Guide
Learn what backlinks are, why they matter for SEO, and how to check your backlink profile using free tools.
Quick Answer
Backlinks are links from external websites pointing to your site, and they remain one of Google's top three ranking factors. A single dofollow link from a high-authority domain (DA 70+) can be worth more than hundreds of links from low-quality sites. Free tools for checking backlinks include Google Search Console (your own site only), Ahrefs Webmaster Tools, and Moz Link Explorer (limited queries).
What Are Backlinks?
A backlink is a link on another website that points to your site. Search engines like Google treat backlinks as endorsements — the more high-quality sites link to you, the more authoritative your site appears. Backlinks remain one of Google's top three ranking factors alongside content quality and search intent.
Not all backlinks are equal. A single link from a trusted, relevant website (like a major news outlet or industry publication) carries far more weight than dozens of links from low-quality directories or unrelated sites.
How to Check Your Backlinks (3 Free Methods)
Google Search Console (Free, Official)
The most reliable source of backlink data since it comes directly from Google. Go to Links in the left sidebar to see your top linking sites, top linked pages, and top linking text (anchor text).
Open Google Search ConsoleRequires verifying ownership of your site. Shows data for your own sites only.
Ahrefs Webmaster Tools (Free Tier)
Ahrefs offers free backlink data for verified site owners. You get a full backlink profile, referring domains, broken links, and more. The free tier is generous and includes most of what small-to-medium sites need.
Sign up for Ahrefs Webmaster ToolsFree for verified site owners. Also shows organic keywords and site health issues.
Moz Link Explorer (Free, 10 Queries/Month)
Moz lets you check backlinks for any domain (including competitors) without verifying ownership. The free plan gives you 10 link queries per month with data on linking domains, anchor text, and Domain Authority scores.
Try Moz Link ExplorerFree Moz account required. Great for checking competitor backlinks.
What to Look For in Your Backlink Profile
Dofollow vs. Nofollow
Dofollow links pass ranking authority to your site. Nofollow links don't pass SEO value but still drive traffic. A natural profile has both — aim for roughly 60-80% dofollow.
Anchor Text Diversity
The clickable text of links pointing to you should be varied. Over-optimized anchor text (e.g., exact-match keywords on every link) looks unnatural to Google and can trigger penalties.
Referring Domain Count
The number of unique domains linking to you matters more than total link count. 100 links from 100 different sites is far more valuable than 100 links from the same site.
Toxic Links
Watch for links from spammy directories, link farms, or irrelevant foreign-language sites. If you find toxic backlinks, use Google's Disavow Tool in Search Console to tell Google to ignore them.
About This Guide
This guide explains how to analyze the backlink profile of any website or page using free tools. Backlinks remain one of Google's top three ranking factors, making them essential to monitor for any SEO strategy. Understanding who links to your site — and how those links are configured — is fundamental to improving your search rankings.
For each backlink, the key data points to evaluate are: the source URL, the anchor text used in the link, the domain authority of the linking site, and whether the link is dofollow or nofollow. Dofollow links pass ranking authority to your site, while nofollow links tell search engines not to count the link as an endorsement — though they can still drive valuable referral traffic.
Use the free tools listed above to audit your own site's backlink profile, identify your most valuable links, spot potentially toxic links that could harm your rankings, and research competitor link-building strategies. A healthy backlink profile includes links from diverse, authoritative domains with natural anchor text distribution.
Google Search Console is the best starting point because the data comes directly from Google. For competitive research (checking competitor backlinks), Moz Link Explorer and Ahrefs Webmaster Tools are excellent free options that provide data on any domain.