The short version: a backlinks counter is a tool that crawls the web and reports how many other websites link to yours, plus details like which pages, which domains, and how strong those domains are. Used it's a diagnostic tool, not a scoreboard, and the number on its own tells you almost nothing until you look at the quality behind it.
What a backlinks counter does
A backlinks counter is software that maintains its own index of the web, separate from Google's, and reports every link it finds pointing at a given URL or domain. Ahrefs, Semrush, Moz's Link Explorer, and Ubersuggest are the big commercial ones. Google Search Console does a stripped-down free version of the same job for your own site, under "Links".
Each tool crawls billions of pages, follows links, and stores them. When you type in a domain, it shows you referring domains (how many separate websites link to you), total backlinks (every individual link, since one site can link to you many times), and usually a quality score for each one, Ahrefs calls it Domain Rating, Moz calls it Domain Authority, Semrush calls it Authority Score. None of these scores come from Google. They're each company's own estimate, built differently, so a site can show DR 40 on Ahrefs and DA 55 on Moz at the same time. That's normal, not a bug.
Why the raw number is misleading on its own
Here's the uncomfortable bit most guides skip over: a bigger backlink count does not reliably mean better rankings. I've seen the same pattern described over and over in SEO forums and case studies, a site with 400 backlinks outranking one with 4,000, because the 400 came from relevant, trusted domains and the 4,000 came from spun blog networks, forum spam, or directory dumps that got built during an old link-buying phase. Google's own webspam guidance is clear that link schemes can lead to a site being demoted or removed from results entirely, so a high count built the wrong way isn't just useless, it's a liability. If you want the full picture on why the count and the ranking impact are two different questions, this piece on how many backlinks you have and whether it changes your rankings goes into that gap.
A worked example
Say you run a small accountancy practice website with 12 pages and you've never checked your backlink profile. You plug the domain into a free backlinks counter and it comes back with 89 referring domains and 340 total backlinks. On the surface that sounds decent. You dig in and sort by Domain Rating, low to high, and find that 60 of those referring domains are DR 0 to 10, mostly directory listings from 2016, a few defunct business award sites, and two link farms you don't recognise. The remaining 29 domains are DR 20 to 55, and include your local Chamber of Commerce, a regional business newspaper that covered a story you were quoted in, and a handful of genuine client and partner sites.
That split matters. The 29 solid links are doing real work for your rankings. The 60 weak or spammy ones are, at best, doing nothing, and at worst quietly dragging on trust. The next move isn't to panic and disavow everything, Google's disavow tool is a blunt instrument meant for toxic, manipulative links, not tidy-ups. It's to note which weak links are harmful (payday loan sites, gambling directories, obvious link farms) versus just low-value but harmless (an old defunct directory), and only disavow the first group. Then you shift effort toward earning more links like the 29 good ones, not more links generally.
Step by step: how to use one
- Step 1. Pick one tool and stick with it for tracking over time. Comparing DR from Ahrefs one month against DA from Moz the next month will make it look like your site is losing links when it isn't, you're just comparing two different measuring systems.
- Step 2. Run your domain and export the full list of referring domains, not just the total count.
- Step 3. Sort by authority score, lowest to highest, and scan the bottom 20 percent. This is where spam and dead links live.
- Step 4. Check anchor text. If dozens of links all use the exact same commercial keyword as anchor text, that's a pattern Google's algorithms are specifically built to spot, and it's a red flag for manipulation, even if you didn't build those links yourself.
- Step 5. Look at your competitors' profiles in the same tool. If three competitors all have links from a regional trade press site or a specific industry directory and you don't, that's your next outreach target, not a guess.
- Step 6. Set a monthly check, not daily. Backlink counts move slowly and checking obsessively just creates noise. Once a month is plenty for most small businesses.
Free versus paid backlinks counters
Google Search Console is free, official, and shows you exactly what Google itself has indexed linking to your site, which no third-party tool can promise since none of them crawl at Google's scale. Its limitation is that it only covers your own domain, you can't use it to check a competitor or a prospective link partner before you pitch them.
Ahrefs and Semrush both start around £99 a month for their entry tier and crawl far more of the web, which is why most working SEOs pay for one of them despite the free options existing. Ubersuggest is a cheaper middle ground, often under £30 a month, with a smaller index, meaning it will show fewer total links than Ahrefs for the same domain, so don't be alarmed if the numbers don't match. Moz's Link Explorer has a useful free tier that gives you 10 lookups a month at no cost, enough for a small business owner checking their own site and a couple of competitors once a month without paying anything.
What the number should change about your strategy
If your count is low but the domains linking to you are strong, don't chase volume, chase relevance. Ten links from sites in your niche will outperform a hundred generic ones. If your count includes a wave of links from one single link-building push (a guest post round, a directory submission service, a PR blast), check the dates, because a sudden cluster of new links all landing in the same week is exactly the pattern that looks unnatural to a search engine, even when the individual links themselves are fine. Spread new link building out and this stops being a worry, which is one reason I always point people toward the guidance on how many backlinks per day is safe to build before they start any active campaign.
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Also worth doing while you're in the tool: check how many pages on your own site are getting zero backlinks at all. Most small business sites find that 80 to 90 percent of their inbound links point to the homepage and one or two blog posts, everything else is an orphan. That's a content and internal linking gap, not a backlinks problem, and it's worth fixing before you spend money chasing more external links to pages nobody can find anyway. If you're also unsure how many topics or keywords each of those pages should even be trying to rank for, this is where how many keywords to target on one page becomes relevant, since scattered targeting is usually why a page never earns links in the first place.
Where new backlinks come from
A backlinks counter shows you the past. It doesn't build anything. The most reliable route I've seen recommended for earning genuine, high-authority links without paying for placements is responding to journalist requests through services like HARO (now part of Connectively) or Qwoted, where reporters actively look for expert quotes and will link back to your site in a published piece. It's slower than buying links and it takes real effort per pitch, but the links that come out of it sit on news and trade press domains that a link farm could never touch. There's a full walkthrough on how to master HARO for backlinks and journalist attention if you want the mechanics of pitching well.
Consistent publishing also feeds the counter over time, since fresh, specific content is what other sites find and link to, not thin pages padded out for the sake of it. If you're trying to work out a realistic cadence rather than guessing, how many blog posts a day you need for growth lays out what's sustainable for a small team.
Frequently asked questions
Is a free backlinks counter accurate enough to trust?
For your own domain, Google Search Console is the most accurate free option since it shows exactly what Google has indexed, no third-party tool matches that. For checking competitors, free tools like Ubersuggest give a rough, smaller-index picture that's useful for spotting patterns but won't show every link a paid tool like Ahrefs would find.
Why do different backlinks counters show different numbers for the same site?
Each tool runs its own separate crawl of the web on its own schedule and with its own coverage, so none of them see the same set of pages at the same time. A domain can show 300 backlinks in Ahrefs and 480 in Semrush purely because of index size and timing differences, not because either number is wrong.
Does a high backlink count guarantee better rankings?
No. A smaller number of links from relevant, trusted domains regularly outranks a larger number of links from directories, spun content, or link farms, and Google's own webspam policies explicitly target manipulative link building, which means a high count built the wrong way can actively work against you.
How often should I check my backlinks counter?
Once a month is enough for most small businesses. Backlink profiles change slowly, and checking more often just adds noise without giving you anything new to act on.
