Why backlinks matter and what they tell you

A backlink is a link from another website to yours. Search engines treat backlinks as votes of confidence — the more links pointing to your site, the more authority it appears to have. But not all backlinks are equal. A link from a well-established news site carries more weight than a link from a brand-new forum post. Checking your backlinks tells you who is linking to you, whether those links are helping or hurting your search visibility, and where your competitors are getting their links from.

You can check backlinks using free tools, paid tools, or a combination of both. The free options show you a partial picture — enough to spot major links and obvious problems. The paid tools show you more links and give you better filtering options, but cost money monthly. Most people start with free tools and move to paid ones only if they are actively managing SEO for a business.

Key Takeaways

  • Free tools like Google Search Console and Ahrefs Free Backlink Checker show you some of your backlinks at no cost, though they do not show the complete picture.
  • Paid tools like Ahrefs, SEMrush, and Moz show far more backlinks and let you filter by domain authority, anchor text, and link type, making them better for serious SEO work.
  • Google Search Console is the most reliable source for backlinks that actually matter to Google, since it shows data from Google's own index.
  • You should check backlinks regularly to spot new links, catch spam or harmful links pointing to you, and understand where your traffic authority is coming from.

Using Google Search Console to see backlinks Google counts

Google Search Console is free and shows you the backlinks that Google itself has indexed and counted. This is the most trustworthy source because it comes directly from Google's data. To access it, go to search.google.com/search-console, sign in with your Google account, and select your website property.

Once you are in Search Console, click Links in the left menu. You will see a section called Top linking sites, which shows the domains sending the most links to you. Below that, Top linked pages shows which of your own pages are receiving the most backlinks. You can click on any domain to see exactly which of your pages it is linking to. This data updates periodically but not in real time — expect a delay of a few days to a week.

Search Console does not show you every backlink on the internet, only the ones Google has found and indexed. If a site links to you but Google has not crawled it yet, it will not appear here. For that reason, Search Console is best used alongside other tools.

Free backlink checkers for a broader view

Ahrefs Free Backlink Checker (backlinko.com/free-backlink-checker) lets you enter your domain and see a sample of backlinks without paying. It shows the referring domain, the page linking to you, the anchor text (the clickable words in the link), and the domain authority of the linking site. You can check up to three domains per day for free.

Ubersuggest (ubersuggest.com) has a free backlink tool that shows backlinks, referring domains, and the authority of each link. You get limited checks per day on the free plan. Moz Link Explorer (moz.com/link-explorer) offers a free tier that shows your top backlinks and domain authority, though the free version is more limited than the paid one.

These free tools do not show you every backlink — they show a sample based on their own crawling and data. They are useful for spotting major links and getting a sense of your backlink profile, but they are not complete. Use them as a starting point, then cross-check important findings in Google Search Console.

Paid tools for detailed backlink analysis

Ahrefs (ahrefs.com) is the most widely used paid backlink tool. It shows millions of backlinks, lets you filter by domain authority, anchor text, link type (dofollow or nofollow), and traffic value. You can see backlinks your competitors have that you do not, and track new backlinks over time. Plans start around $99 per month.

SEMrush (semrush.com) includes backlink analysis as part of its broader SEO toolkit. It shows backlinks, referring domains, and lets you compare your backlink profile to competitors. It also flags toxic or low-quality links that might be harming you. Plans start around $120 per month.

Moz Pro (moz.com) includes Link Explorer, which shows backlinks, domain authority, and spam score. It is less expensive than Ahrefs or SEMrush, starting around $99 per month, but shows fewer total backlinks. Choose based on your budget and how detailed you need the analysis to be.

What to look for when reviewing your backlinks

When you check your backlinks, look first at the domain authority of the linking site. A link from a site with high authority (typically 40 or above) is worth more than a link from a new site with authority near zero. Links from established news outlets, universities, or industry publications are generally more valuable than links from blogs or forums.

Check the anchor text — the words used in the link. If many links use your exact business name or a relevant keyword, that is a good sign. If you see a lot of links using generic text like "click here" or "this site", they are less valuable for search visibility. Watch for anchor text that looks spammy or unrelated to your site, which can indicate low-quality backlinks.

Look at the link type. A dofollow link passes authority to your site and helps your search ranking. A nofollow link tells search engines not to count it toward your ranking, though it can still send traffic. Most of your backlinks should be dofollow, but some nofollow links are normal and expected.

Finally, check whether the linking page is actually relevant to your site. A link from a page about your industry or topic is more valuable than a random link from an unrelated site. If you spot links from spam sites, adult sites, or sites with no connection to your business, those links may be hurting you rather than helping.

Spotting and removing harmful backlinks

Not all backlinks help you. Links from low-quality, spammy, or irrelevant sites can drag down your search ranking. If you notice a sudden spike in backlinks from suspicious sources, or if your search traffic drops after new backlinks appear, you may have a problem.

To remove a harmful backlink, first try contacting the site owner and asking them to take it down. Many backlinks are placed by mistake or by automated systems, and site owners will remove them if you ask politely. If the owner does not respond or refuses, you can use Google Search Console to disavow the link — this tells Google to ignore it when calculating your ranking.

To disavow links in Search Console, go to Links, then click the three-dot menu and select Disavow links. You will upload a text file listing the domains or URLs you want Google to ignore. Use this sparingly — disavowing too many links can confuse Google about your site's reputation. Only disavow links you are confident are harmful.

Checking competitor backlinks to find link opportunities

Most paid backlink tools let you see where your competitors are getting links from. This is useful because it shows you potential sources for your own backlinks. If a site links to your competitor but not to you, and your site is relevant to that topic, you may have a chance to reach out and ask for a link.

In Ahrefs, enter a competitor's domain and look at their top backlinks. In SEMrush, use the Backlink Analytics tool and filter by domain. Look for links from industry publications, resource pages, directories, and blogs that cover your topic. Make a list of the most relevant sources, then visit those sites to see if they accept guest posts, link submissions, or partnership opportunities.

This approach works best when you focus on quality over quantity. A single link from a relevant, high-authority site is worth far more than dozens of links from low-quality sources. Spend your time reaching out to sites that actually matter in your industry.

Frequently Asked Questions

How often should I check my backlinks?

Check your backlinks at least once a month if you are actively working on SEO. If you are not actively building links, checking quarterly is enough to spot major changes or problems. Set a calendar reminder so you do not forget.

Why does Google Search Console show fewer backlinks than other tools?

Google Search Console only shows backlinks that Google has crawled and indexed. Other tools use their own web crawlers and may find links that Google has not discovered yet. Search Console is more accurate for links that actually affect your ranking, but other tools show a broader picture of the internet.

What is the difference between dofollow and nofollow links?

A dofollow link passes ranking authority to your site and helps your search visibility. A nofollow link tells search engines not to count it toward your ranking, though it can still send traffic. Most valuable backlinks are dofollow, but nofollow links from high-traffic sites can still be worth having.

Can too many backlinks hurt my site?

A sudden, unnatural spike in backlinks — especially from low-quality or irrelevant sites — can trigger Google's spam detection and hurt your ranking. Natural growth over time is fine. If you notice a suspicious spike, review the new links and disavow any that look harmful.

Do I need a paid backlink tool or is Google Search Console enough?

Google Search Console is free and shows the backlinks that matter most to your ranking. For most small sites, it is enough. Paid tools are worth the cost only if you are managing SEO professionally or competing in a highly competitive industry where you need to understand every link your competitors have.