Free Backlink Checker: a backlinks checker for who links to any website.

Enter the website's domain in the box at the top of this page and press Check backlinks: the result lists who links to it, strongest first, without an account. It works for any public website, yours or anyone else's, and up to 10 checks every 10 minutes.

1. Enter the domain. Type or paste the website's address in the box above. A full URL works too: the checker keeps the hostname, drops www. and any path, and counts links to the whole domain, its subdomains included.
2. Read the totals. The first line gives the referring domains, the Link Authority and, when MrKeyword's web graph ranks the domain, its position and the release the numbers came from.
3. Read the 20 strongest linking sites. The table lists the strongest referring domains first, with where each was found and, for domains MrKeyword's crawler has visited, an example linking page with its anchor text and whether the link is followed.
4. Open the full report. A free account lists up to 500 referring domains, the top anchor texts and the individual links, with 10 checks a day. No card is needed.

A result link can be shared: the address keeps the domain, so whoever opens it sees the same check run again. To compare the authority of several sites at once instead of their links, the bulk domain authority checker takes up to five domains side by side.

Check it above: the first number in the result is the website's referring domains, the count of different websites that link to it at least once, however many links each one has. It is the number to compare between sites, because a hundred links from one site count once.

The count is the larger of two numbers: the linking domains MrKeyword has stored for the website, from its crawl and its web graph together, and the total the web graph counts across the whole release. When the web graph's total is higher, the result says so, and the table still lists only domains MrKeyword has actually stored. A few rules apply to the stored list: links between pages of the same site are not counted, infrastructure domains such as CDNs and analytics services are left out, links to a subdomain count for the main domain, and www. is ignored.

Backlinks and referring domains are different counts: the first is every individual link, the second is the sites they come from. Our guide to what backlinks are explains why Google weighs the variety of linking sites more than the raw number of links.

Enter the competitor's domain in the checker above: it works for any public website, and the result shows their referring domains, authority and strongest linking sites exactly as it would for yours. Then read it against your own numbers.

1. Check your own domain first. Enter your site above and note its referring domains and authority. A competitor's numbers only mean something next to yours, read in the same tool.
2. Check each competitor the same way. Enter the competitor's domain, without a page path: the checker counts links to the whole domain, its subdomains included. Run the sites that outrank you for your main keywords, not just the brands you know.
3. Read the gap, then the list. The difference in referring domains and authority tells you how far behind or ahead you are. The 20 domains in the result show who the strongest linking sites are, with an example page where MrKeyword's crawler has one; a free account lists up to 500, strongest first.
4. Find the sites worth contacting. A site that links to two or more of your competitors but not to you is the best lead: it already links to pages like yours. Inside the app, the Backlink gap tab in Competitor Analysis lists those domains for you.

Links tend to follow traffic and authority, so the website traffic checker and the bulk domain authority checker are the natural next look at the same competitors: up to five sites side by side, with no account.

Yes, within what MrKeyword has recorded: every result counts the referring domains gained and lost between the last two web graph releases, and, when MrKeyword's link graph has scored the domain in at least two months, charts its linking domains month by month for up to the past twelve months. Nothing is shown for months MrKeyword has no record of.

The monthly chart reads the last Link Authority recalculation of each month. Its count is the domain's followed linking domains in MrKeyword's link graph, which is narrower than the headline total, so read the chart for direction: a line that climbs means the domain is earning links faster than it loses them. New and lost domains, by contrast, compare whole web graph releases, so they move only when a new release arrives.

Paid tools that have crawled for many years keep far longer histories, and MrKeyword cannot reach back before it started recording a domain. For well-known websites, the website authority profiles show each domain's Link Authority and strongest linking sites, with a history where MrKeyword's own score is the one on the page.

The web graph part is as fresh as its latest release, and the release behind this page's figures covers August–October 2026, built from three monthly crawls of the public web; the crawler part is as fresh as MrKeyword's last visit to each linking page. Results for domains ranked in MrKeyword's web graph name the release they were read from.

• Web graph. A new release arrives every few months. When it is imported, every domain's referring domains, rank and Link Authority are read from it, and new and lost domains are counted against the release before.
• Crawler. Each link MrKeyword's crawler fetches keeps the dates it was first and last seen, and the full report shows when each linking domain was last seen, so you can tell a link seen last week from one not seen for months.
• No live check. Pressing the button reads stored data; it does not crawl the website or its linking pages at that moment.

Without an account you see every total, the 20 strongest referring domains with an example linking page each, and the monthly history when there is one; a free account lists up to 500 referring domains with their anchors and individual links. The checks are reads of MrKeyword's own data, not calls to a paid API, so the limits exist only to stop the index being copied wholesale.

Partly: the checker works at the domain level, and only the links MrKeyword's crawler has fetched carry the exact page they point to. The web graph records that a domain links to yours, not which of your pages, so a page-level answer is only as complete as the crawl.

In a free account, the backlinks table names the target page of each crawled link, so you can see which pages earn links. For your own website, the best free source is Google itself: the Links report in Search Console lists your top linked pages and the sites that link to each one. Our guide to finding backlinks in Google Search Console shows where the report is, what its sample leaves out and how to export it. Import that export into MrKeyword and those links join your own report, beside the crawl and the web graph.

Ahrefs' free checker shows more individual backlinks, its top 100, and Semrush's also works without registration; MrKeyword's lists the 20 strongest referring domains with an example page each, and labels which of its own sources found every one. The table sets out each free tier as of November 2026, as each vendor states it on its own pages.

Free tiers are only half the picture: paid backlink tools run their own large crawlers and keep years of link history, while free checkers show a slice of an index or, like this one, what their own smaller data has seen. All of them are estimates of the same unknowable thing, because no tool crawls the whole web.

• Coverage. A large paid index usually finds more individual linking pages, especially on big sites. MrKeyword's web graph counts linking domains across much of the web, but its page-level crawl is far smaller.
• History. Paid tools typically chart links over months or years. Here, new and lost domains are counted between web graph releases, the result charts up to twelve months of linking domains where MrKeyword has them, and a website you add to MrKeyword gets its authority and referring-domain history charted from then on.
• Depth per link. Paid tools usually show every link's page, anchor and attributes. Here that detail exists for links MrKeyword's crawler has fetched, and the rest are listed as domains.
• Your own data. For your own site, Google Search Console and Bing Webmaster Tools are free and show links the search engines themselves have found. Any checker, free or paid, is best used beside them, not instead of them.
• Transparency. Whatever you use, prefer a tool that says where each number came from. Compare sites inside one tool, and never set one tool's count against another's.

If you are weighing up paid options, our comparison of Moz alternatives covers what the main backlink tools offer, and what backlinks are and how Google uses them explains which numbers matter before you pay for more of them.

It does not crawl the web live, it does not see every link, and it shows no page for links the web graph records only at the domain level. These are the gaps to keep in mind when you read a result.

From two places MrKeyword runs itself: its web graph, which records which domains link to which across about 135 million domains, and its own crawler, which records individual links on the pages it has fetched. No third-party backlink index is bought or resold, and each referring domain is labelled with the source that found it.

• MrKeyword's web graph is domain-level. It knows that one domain links to another, and how many domains link to each, but not which page, which anchor text or which link attributes. It is rebuilt with each new release, every few months, and new and lost domains are counted between releases. Rankings are kept for the top 50 million domains.
• MrKeyword's crawler is page-level. For each link it has fetched it keeps the linking page, the page linked to, the anchor text, whether the link is followed, nofollow, sponsored or UGC, and whether it is a text, image or empty link, with when it was first and last seen. It has visited far fewer pages than the web graph covers, so for big sites its link count is much smaller than the referring-domain count.
• For your own websites, a workspace can add the links Bing Webmaster Tools reports and import the link exports from Google Search Console, Ahrefs Webmaster Tools or Bing. Those are merged into your own report and never shown to anyone else.

A few rules keep the count honest. Links between pages of the same site are left out. Links from infrastructure domains such as CDNs and analytics services are filtered so they never appear as backlinks. Links to a subdomain count for the main domain, and www. is ignored. In the app, a linking domain that is one of your own websites, or shares your site's name, is flagged, because those links were probably not earned.

Every link MrKeyword's crawler has seen is labelled followed, nofollow, sponsored or UGC, and as a text, image or empty link. Web-graph links carry no label, because the web graph does not record link attributes.

A useful backlink comes from a real website about something related to yours, sits in the body of a page a person wrote, and would send a reader to you even if search engines did not exist. A link from a local news story about your business, or a guide that cites your data, fits that description. A link in a sitewide footer of an unrelated site, or one of hundreds on a directory page, mostly does not.

Variety matters more than volume: links from many different domains build authority faster than many links from the same few. Anchor text should read naturally, which in practice means mostly your brand name and your address, with a few descriptive phrases. A profile where most anchors are the exact keyword you want to rank for looks manufactured, because it usually is.

Do not buy links that pass ranking credit, and do not join link schemes. Google's spam policies name both, and the risk is that every link you paid for is discounted at once. Earn links with things worth citing, and mark any paid placement as sponsored.

Four jobs come up again and again: checking your own new links, finding the sites that link to competitors, recovering links you lost, and spotting spam before it confuses your reports.

Auf Deutsch: Mit dem kostenlosen Backlink Checker auf Deutsch checken Sie die Backlinks jeder Website mit denselben Daten. Die App selbst ist auf Englisch.