Link Intersection Finder

What is the Link Intersection Finder?

The Link Intersection Finder is a server-side tool for finding link opportunities you are currently missing. You give it your own domain along with one or more competitor domains, and it returns the websites that link to several of those competitors at once — while linking to none of your pages. Those are the sites in the intersection you have not yet earned, and they are the strongest prospects for a new link.

The logic behind the tool is simple and powerful. A website that already links to multiple domain names in your space has already proven it is happy to reference businesses like yours. It is a relevant site — it writes about your industry, recommends similar services, and curates the kind of list that your page belongs on. If that site links to several of your competitors but never to you, the question is not whether it is a good prospect, but how you get a link there. The intersection finder puts those exact sites in front of you.

This is a tool for a specific stage of link building: prospecting. Instead of trawling through backlink reports for every competitor and mentally cross-referencing which sites show up in multiple lists, you hand the comparison to the tool. It does the crossing for you, and the result is a shortlist of the websites where your competitors are already visible and you are not.

What the Link Intersection Finder finds

The tool finds the intersection between your competitors' backlink profiles and your own. On one side, it looks at the domains that link to your competitors; on the other, it looks at whether any of those same domains also link to your site. The output is the set of websites that sit in the first group but not the second — domains that link to multiple competitors and never to you.

The emphasis on multiple competitors is what makes the results meaningful. A site that links to just one of your competitors might be an outlier — a one-off mention, an old partnership, a press hit that will never repeat. A site that links to two, three, or more of your competitors is different. It has an ongoing pattern of referencing businesses in your space, which means it is organisationally capable of linking to a domain like yours and statistically likely to accept a pitch if the fit is right.

The results are organised around your domain as the point of comparison. You enter your own site so the tool knows the line between an in-reach site and a missing opportunity. Every domain that comes back is one your competitors have captured and you have not — or, at the very least, one worth investigating before you write it off.

Thinking of the output as a running gap list keeps it useful. The intersection is not a static fact about the web; it is a snapshot of who is linking to whom right now. Sites add links every week, and a domain that currently sits in the intersection can fall out of it the moment you earn a placement there. That is why the list is best treated as something to work through and re-run, rather than as a finished document — every time you win a link from the list, the comparison improves and the next iteration shows you what changed.

Because the tool works from the input you provide, the quality of your competitor list shapes the quality of the output. Choose competitors that genuinely overlap with your business, and the intersection will be full of relevant leads. Choose distant or unrelated domains, and the results will be scattered and hard to use. Your choice of input is the main lever you hold over the results.

How to use the Link Intersection Finder

Using the tool well is mostly about choosing the right competitors to include. The mechanics are straightforward. Here are the steps:

1. Pick the competitor domains you want to compare against. Choose two to five sites that serve a similar audience and occupy a similar space to yours.
2. Enter your own domain so the tool knows what counts as already-linked, then add the competitor domains alongside it.
3. Submit the set to the server and let the tool work through the backlink comparison.
4. Review the list of intersecting domains that link to your competitors but not to you. Scan each one for relevance, quality, and how a link there would fit your site.
5. Prioritise the best prospects — the sites that are relevant, well regarded, and realistic to reach — and build a targeted outreach pitch around each one.

The output is built to feed straight into outreach. Once the prospecting is done, the real work begins: reaching out to those sites, offering them a reason to link, and turning a missing opportunity into a backlink.

How to get better results

• Choose competitors of a similar scale to your own. A site whose backlinks dwarf yours will return prospects that are hard to land; sites at a comparable stage return leads you can realistically win.
• Use several competitors per run. The more domains you include, the more confident you can be that a returned site has a genuine and repeated pattern of linking in your space.
• Keep your industry overlap tight. Competitors that serve a different audience will pollute the intersection with results that have nothing to offer you.
• Screen the results before you pitch. Check that each prospect is still active, still relevant, and still actually linking to your competitors before you invest time in a personalised email.
• Track the prospects you contact. Record who you reached out to, what the result was, and which links you won, so the intersection becomes a growing, organised pipeline instead of a one-off list.
• Re-run the comparison regularly. Sites add links and remove links constantly, and a prospect that was locked a month ago can open up — or a won link can fall out of the intersection.

Why the Link Intersection Finder matters

Link building is judged by the relevance of the domains you earn, and there is no faster way to gauge relevance than to look at where the competition already stands. Sites that link to your competitors are pre-qualified: someone has already decided they are a relevant home for a business like yours. Spending your outreach effort on those sites is a far better use of time than cold-pitching random directories and hoping for a hit.

The intersection specifically — sites that link to several competitors but not to you — is where the clearest case lives. You are not asking these publishers to do something novel or untested. You are asking them to add one more domain to a list they are already comfortable maintaining. That is an easier conversation than a cold introduction, which is why intersection prospecting is a staple of serious link building. The finder simply makes that staple possible at scale, so you stop crossing lists by hand and start pitching.

None of this is to say a page on the intersection list is automatically worth a link, or that outreach will always succeed. What the list does guarantee is that every prospect passed some basic relevance test that random prospecting cannot offer: the site already references businesses operating in your space. From there it is down to fit, timing, and pitch — but starting from a list that is already filtered by demonstrated behaviour puts you well ahead of drawing a blank on where to look.

When to use the Link Intersection Finder

• When planning a new link-building campaign, to build a targeted prospect list from real, demonstrated relevance instead of guesswork.
• When a competitor keeps outpacing you in search results, to find the linking sites that might explain their advantage and claim them for yourself.
• When your existing outreach has gone quiet, to refresh the pipeline with a fresh batch of pre-qualified prospects.
• When you need to report on link-building effort, to demonstrate that your priorities are grounded in competitor evidence rather than intuition.

Frequently asked questions

What input does the Link Intersection Finder need?

It needs your own domain plus one or more competitor domains. The tool compares where they earn links and returns the websites that link to several of your competitors but none of your pages.

Why is the intersection useful for link building?

Because those sites have already demonstrated they link to businesses like yours. They are relevant, they maintain lists that include your competitors, and getting one more domain added to that pattern is a realistic, winnable outcome.

How many competitors should I enter?

Two to five focused competitors works best. A handful of genuinely overlapping domains gives you confident intersection results; a scatter of unrelated sites will dilute the list with irrelevant leads.

Are all the returned domains worth pitching?

No — the tool is a prospecting filter, not a guarantee of quality. Before you pitch, screen each result for whether it is still active, still relevant, and still a site you would actually want a link from.

Does the tool get links for me?

No. It finds the right prospects, but the outreach and relationship work that earns the actual link is yours to do. What the tool removes is the tedious prospecting, so you can spend your effort on the part that needs a human touch.