Free Backlink Checker
Analyze backlinks, referring domains and domain authority for any URL. Currently in development — join the waitlist for early access.
Backlink Analysis
Any Domain
Will Be Free
Coming Soon
In Development
Our Backlink Checker is Coming Soon
Reliable backlink data requires a paid API (Moz, Ahrefs, Semrush). We are evaluating the best source so we can offer accurate results — for free, like every other XToolBoost tool.
Full backlink list
Referring domains
Domain authority
Anchor text
Dofollow / Nofollow
You're on the list! We'll email you when it launches.
No spam. Just one email when the tool goes live.
Preview: What the Backlink Checker Will Show
Coming Soon
Analyze
Total Backlinks
12,847
All incoming links
Referring Domains
2,183
Unique linking sites
Domain Authority
68
Score out of 100
Dofollow Ratio
74%
Pass link equity
Linking Domain
DA
Type
techcrunch.com
92
Dofollow
forbes.com
94
Dofollow
medium.com
95
Nofollow
smashingmagazine.com
89
Dofollow
searchengineland.com
91
Dofollow
Why Reliable Backlink Data Isn't Free
Unlike most of our tools, backlink data can't be collected from your browser or a public API. Here's the honest reality of how backlink checkers work behind the scenes — and why we're taking extra time to build this one properly.
The problem with backlink data
To know who links to a website, you need a constantly-updated crawl of the entire web — billions of pages, refreshed daily. Building and maintaining that crawl costs tens of millions of dollars per year. Only a handful of companies have done it:
- Ahrefs — known for the freshest backlink index. API access starts at $99/month.
- Moz — the original link authority tool. API access starts at $99/month.
- Semrush — comprehensive but focused on paid search. API access starts at $139/month.
- Majestic — trust flow and citation flow metrics. API access starts at $49/month.
How we plan to keep it free
We are looking at three approaches:
- Free-tier quotas. Each tool offers a small free tier (Moz Link Explorer: 10 queries/month). We can pool these across multiple API keys to serve more users without paying.
- Ad-supported access. Users who watch an ad get one free lookup. Revenue from the ad pays for the API call. Everyone wins.
- Rate-limited free access. 1 check per IP per hour, unlimited for waitlist members. Heaviest users fund the tool, casual users never pay.
Our goal is simple: free for everyone, forever. But we won't release a half-broken tool that gives wrong data. That would hurt your SEO more than help it.
Free Backlink Tools You Can Use Today
While we finish development, here are the legitimate free options that already work:
Google Search Console
Shows all backlinks Google has discovered for your own verified sites. Free forever. The most authoritative source because Google is showing you its own index.
Ahrefs Webmaster Tools
Free backlink data for sites you can verify by DNS or file upload. Limited to your own verified sites — not competitors. Excellent data quality.
Bing Webmaster Tools
Bing shows a "Backlinks" report for your verified sites. Smaller index than Google but useful as a second opinion. Completely free.
Google Search Operators
Search
"yoursite.com" -site:yoursite.com in Google to see pages mentioning your brand. Not a true backlink check but reveals unlinked mentions. Ubersuggest (Limited)
Free tier gives you 3 backlink searches per day. Data is pulled from Moz. Good for occasional competitor research without paying.
Moz Free Tools
Moz Link Explorer free tier gives 10 queries per month after signup. Shows Domain Authority and top backlinks. Small quota but real data.
Frequently Asked Questions
What is a backlink checker?
A backlink checker is a tool that finds all the external websites linking to a given URL or domain. It shows you which sites link to you, what anchor text they use, whether the links are dofollow or nofollow, and the authority of each linking domain. Backlinks are one of Google's strongest ranking signals.
What is the difference between a backlink and a referring domain?
A backlink is a single link from another page. A referring domain is the site the link comes from. If one website links to you from 5 different pages, that counts as 5 backlinks from 1 referring domain. Referring domains matter more because getting links from many different sites is a stronger signal than many links from one site.
What is domain authority?
Domain Authority (DA) — also called Domain Rating (DR) by Ahrefs or Authority Score by Semrush — is a 0–100 metric that predicts how well a domain will rank in search. It is calculated by each tool's own proprietary algorithm based on link quantity, quality and diversity. Higher DA links usually pass more value.
What is a dofollow vs nofollow link?
A dofollow link passes link equity — it tells Google the link is a vote of confidence and helps the linked page rank. A nofollow link has the
rel="nofollow" attribute, which tells Google not to count it as a ranking signal. Modern Google treats nofollow as a hint rather than a directive, but dofollow links still carry more ranking value.When will the XToolBoost Backlink Checker launch?
The tool is in active development. Reliable backlink data requires a paid API (Moz, Ahrefs, Semrush) which costs $49–$99 per month. We are evaluating which API gives the best data at the lowest cost. Join the waitlist to get notified when it launches and to receive an early-access discount.
Are there free alternatives I can use today?
Yes. Google Search Console shows the backlinks Google has discovered for your own verified sites — free. Ahrefs Webmaster Tools gives free backlink data for sites you can verify. Bing Webmaster Tools also shows some link data. For checking competitors, you need a paid tool — there is no free comprehensive source.
Is this tool really going to be free?
Yes. Like all XToolBoost tools, the Backlink Checker will be free to use — no sign-up, no credit card. We are looking at ways to keep it free by using ad-supported access and rate-limiting heavy users.