Free Backlink Checker

What is a backlink checker?

A backlink checker is a tool that shows which websites link to a given domain. Search engines treat every link from one site to another as a vote of confidence, so the number, quality, and relevance of the sites linking to you remain one of the strongest ranking signals in Google. A backlink checker turns that invisible web of links into numbers you can act on: how many sites link to you, how authoritative they are, which pages they point to, and what words they use in the link.

This free backlink checker queries a professional link index that continuously crawls the web, then summarizes the result into a link profile summary and a list of the strongest backlinks. It is the same kind of data paid SEO suites charge for, without the subscription.

How to read your backlink profile

The summary gives you five numbers. Here is what each one tells you and what a healthy value looks like:

• Domain Rating (DR). The 0 to 100 authority score of the domain, the same score shown by our DR Checker, so the two tools always agree. Higher means stronger referring domains.
• Referring domains. The number of unique websites linking to you. This is the metric that correlates best with rankings, and the one to track month over month.
• Backlinks. The total number of individual links. A single sitewide footer link can inflate this number by thousands, which is why referring domains matter more.
• Dofollow share. Dofollow links pass authority; nofollow, sponsored, and UGC links mostly do not. A natural profile is typically 60 to 90 percent dofollow. Anything near 100 percent looks manufactured.
• Broken backlinks. Links pointing at pages on your site that now return an error. Each one is authority leaking away, and each is fixable with a redirect in minutes.

How to check competitor backlinks

The fastest way to find link opportunities is to look at who already links to the sites ranking above you. Run this backlink checker on two or three competitors and compare their referring domain counts with yours: that gap is roughly how far behind you are on authority.

Then scan their top backlinks. Directories, industry blogs, resource pages, and podcasts that link to several competitors are the best prospects, because they have already shown they link to businesses like yours. Note the anchor text they use too: if competitors earn links with descriptive anchors and yours are all brand names, you are missing topical signals.

How to get more backlinks

Once you know where you stand, growing your referring domains comes down to a few repeatable plays:

• Publish linkable assets. Original data, free tools, and definitive guides attract links on their own. This backlink checker is one example.
• Reclaim broken links. Redirect any broken target page the tool reports so the authority flows again.
• Pitch sites that link to competitors. They already link to your category. A short, specific email with a better resource often works.
• Exchange contextual links at scale. BlogSEO matches you with other websites in your niche and inserts links to your site inside their articles automatically, so you earn new referring domains every month without outreach.

Whatever mix you choose, come back to this page monthly and watch the referring domains number. That trend, not the raw backlink count, is the one that predicts rankings.