Free Backlink Checker — See Every Link Pointing at Your Site
Check any domain's backlink profile: referring domains, anchor text, follow vs nofollow, and the authority behind each link. Then find the links your competitors have and you don't.
What you get
Every referring domain
The distinct sites linking to you, ranked by how much authority each one carries — the number that actually moves rankings.
Anchor text breakdown
See exactly which words people link to you with. Over-optimised anchors are a common cause of suppressed rankings.
Follow vs nofollow split
Know how much of your profile genuinely passes authority, and whether the mix looks natural.
Backlink gap
The sites linking to your competitors but not to you. This is the outreach list — real prospects, not guesses.
Authority Score
A 0–100 read on how strong the profile is overall, so you can compare yourself against the sites you're competing with.
Top linked pages
Which of your pages attract links. Usually a surprise, and usually where your next piece of content should point.
How to check your backlinks
- 1Enter your domain — no account needed to see the summary.
- 2Review referring domains and Authority Score to understand where you stand.
- 3Open the anchor text report and check nothing looks over-optimised.
- 4Add two or three competitors to the Backlink Gap report.
- 5Work the gap list: those sites already link to businesses like yours, so they're the realistic targets.
Understand the metrics
Backlink checker FAQ
How do I check the backlinks to my website?
Enter your domain and OnPageSEO.ai returns every backlink we can find: the referring domain, the exact page linking to you, the anchor text used, and whether the link passes authority (follow) or not (nofollow).
Can I check a competitor's backlinks?
Yes. Enter any domain, not just your own. The Backlink Gap report goes further — it shows the sites linking to your competitors but not to you, which is the practical list of who to approach.
What's the difference between backlinks and referring domains?
Backlinks counts every individual link; referring domains counts the distinct websites they come from. Referring domains matters far more — 100 links from one site is worth much less than 100 links from 100 different sites.
Do nofollow links matter?
They don't pass authority the way follow links do, but they still drive real referral traffic and a natural profile contains both. A profile that's 100% follow looks manipulated.
How often is the backlink data updated?
Backlink profiles are refreshed on a rolling basis and cached so viewing them is always free. If you need the very latest snapshot, a manual refresh pulls fresh data and uses one of your plan's monthly refreshes.
See your own data in a couple of minutes
Connect a site and OnPageSEO.ai pulls your rankings, backlinks, keyword opportunities and local map-pack position into one place.
Check your backlinks free