5 Free Backlink Checkers Compared: What Each One Really Shows You

Every free backlink checker comes with a catch. One only shows your own site. One stops at 100 links. One gives you ten searches a month. Sign up for all of them, though, and you can cover most of what people pay $100 a month for.

This is an honest comparison of five free backlink checkers: what each one actually shows, where it stops, and how to combine them into a workflow that costs nothing.

Free backlink checkers at a glance

If you only check your own site, the first two give you the most. If you need competitor data, Bing's comparison and Ahrefs' free checker are the best free options.

1. Google Search Console

Best for: knowing which of your links Google has actually found.

Search Console's Links report shows your top linking sites, your most-linked pages and the most common anchor text. It's the only backlink data that comes from Google itself.

The catch: it shows a sample, not every link, and gives no authority scores. You can't use it to look at competitors.

2. Bing Webmaster Tools

Best for: free competitor backlink research.

This is the most underrated free backlink checker. After you verify your own site, the Backlinks section lets you compare your profile against up to two other sites, including a filter for domains that link to a competitor but not to you. That's a link-prospecting list most paid tools charge for.

The catch: you need a verified site to get in, and Bing's link index is smaller than the big commercial ones. Sign up at Bing Webmaster Tools; you can import your verified sites from Search Console in a couple of clicks.

3. Ahrefs Backlink Checker

Best for: a quick look at any domain.

Enter any domain into the free Ahrefs backlink checker and you get Domain Rating, the number of backlinks and referring domains, and the top 100 backlinks. For sizing up a competitor or vetting a site before outreach, that's often enough.

The catch: 100 links is a snapshot, not a full list.

4. Ahrefs Webmaster Tools

Best for: a complete view of your own links.

Verify your site and Ahrefs gives you its full backlink data for that site free, plus a site audit. If you own the site, it's the most complete free link data available.

The catch: it only works for sites you verify, so it's useless for competitor research.

5. Moz Link Explorer

Best for: a second opinion, and Domain Authority.

Moz Link Explorer shows linking domains, top pages and Moz's Domain Authority for any site with a free account.

The catch: the free tier allows only a small number of queries each month, so use it for spot checks.

How to judge a backlink you find

Whichever checker you use, it will show links you didn't know about. A quick way to decide whether one matters:

• Is the linking page indexed? Search site: plus the URL in Google. If the page isn't indexed, the link isn't helping.
• Is it followed? Nofollow and sponsored links are fine to have, but they pass little or no ranking credit.
• Is the site relevant? A link from a site in your industry outweighs one from an unrelated directory.
• Does the site have real visitors? Sites that exist only to host links usually have plenty of pages and no audience.
• Is it editorial? A link inside an article a writer chose to make beats one in a footer or a comment.

Most links you find will be unremarkable, and that's normal. You don't need to disavow them. Save that for a clear pattern of paid or spammy links.

A free workflow that covers most paid use cases

1. Your own links: Search Console for Google's view, plus Ahrefs Webmaster Tools for the full list.
2. Competitor links: Bing's comparison for the "they have it, we don't" list, plus Ahrefs' free checker for each competitor's top 100.
3. Authority benchmarking: check your DR alongside up to nine competitors at once with DidYouSEO's free Domain Rating checker.
4. Lost links: find pages on your site that return 404 but used to be linked, and redirect them. The broken links checker helps.
5. Monthly: log referring domains, not total backlinks. Here's why referring domains are the number that matters.

When you actually need a paid tool

Free tools stop being enough when link work is your daily job: deep competitor link audits at agency scale, historical link data, or tracking hundreds of prospects. At that point a paid index earns its cost.

If what you're paying for today is mostly authority checks and an occasional look at someone's links, you may not need it. We compared the free options against one popular paid tool in free Majestic alternatives, honestly compared.

Common mistakes

• Comparing numbers across tools. Each tool crawls a different part of the web. A site can show 400 referring domains in one and 650 in another. Compare within one tool.
• Treating "backlinks found" as "backlinks that count". Many are nofollow, from spam, or on pages Google never indexes. Search Console is the closest thing to "what Google sees".
• Ignoring your own 404s. The easiest links to get are the ones you already earned and then broke with a URL change.