Backlink Gap
Find the referring domains that link to your competitors but not to you. Enter your domain and up to four competitors, and the gap analysis surfaces the sites already willing to link to others in your space — your warmest link-building prospects, ranked by Authority Score, with the exact links to pursue.
The fastest way to find prospects
Cold outreach is hard. A site that already links to two of your rivals is a far warmer prospect than one chosen at random. The Backlink Gap analysis is built on that idea: compare your link profile against your competitors' and it returns the referring domains they have and you don't, so every name on the list is a site that links to pages like yours.
Up to five sites, ranked by what matters
Add your own domain and up to four competitors. Results are ranked by Authority Score so the strongest prospects sit at the top, and a Matches column shows how many of the entered sites each domain links to. A domain that links to three of your four rivals but not you is about as warm as a prospect gets — it stands out immediately.
Best, Strong, Weak, Shared and Unique
Slice the list by intent with one click:
- Best — high-authority sites that link to rivals but not you (warmest prospects)
- Strong — high-authority referring domains across the set
- Weak — lower-authority domains, for volume plays
- Shared — domains linking to several of the entered sites
- Unique — domains linking to only one competitor
- All — every referring domain, no filter
Layer on a minimum Authority Score filter to hide weak domains, search by domain name, and switch the perspective to view prospects from any entered domain's point of view.
Drill into the link to pursue
A name on a list isn't enough — you need to know where the link lives. Expand any referring domain and you get every backlink from it to your competitors: the source page, the anchor and target, and first and last seen dates. That's the exact page and context to pitch, so outreach starts from evidence rather than a guess.
Run it once, work it for weeks
Every gap analysis is saved under Your saved analyses with the date it was run, and reopening one is free. Build a prospect list now and work through it over the following weeks without re-running anything. To go deeper on a single site first, the Backlink Checker profiles any domain, and Referring Domains lists every site linking to one.
How to find your backlink gaps
1. Enter your domain and competitors
Add your domain and up to four competitors, then run the analysis.
2. Work the prospect list
Use the Best view for your warmest prospects, ranked by Authority Score, and switch views or set a minimum score to focus the list.
3. Drill into a domain
Expand any referring domain to see the exact links it gives your competitors — the page and context to pitch for your own.
Frequently asked questions
What does the Backlink Gap tool do?
You enter your domain and up to four competitors, and it finds the referring domains that link to them but not to you. Those are your warmest link-building prospects — sites already willing to link to others in your space — ranked by Authority Score.
How many competitors can I compare?
Up to four competitors alongside your own domain, for five sites in total. The Matches column shows how many of the entered sites each referring domain links to, so a domain linking to several rivals stands out as a strong target.
What are the Best, Strong, Weak, Shared and Unique views?
Best surfaces high-authority sites that link to rivals but not you — the warmest prospects. Strong filters to high-authority domains, Weak to lower-authority ones. Shared shows domains linking to several of the entered sites, Unique shows domains linking to only one, and All drops the filter.
Can I see the actual links to pursue?
Yes. Expand any referring domain and you get every backlink from it to your competitors — the source page, anchor and target, and first and last seen dates — so you can see the exact page and context to pitch for your own link.
Can I filter by authority?
Yes. Set a minimum Authority Score to hide weak domains, and search by domain name to focus on a specific site. You can also switch the perspective to view prospects from any of the entered domains' point of view.
Are my analyses saved?
Yes. Every gap analysis is saved under Your saved analyses with the date it was run, and reopening one is free and doesn't use a daily run, so you can come back to a prospect list whenever you're ready to work it.
Is the Backlink Gap tool free?
It's a paid feature with a daily limit that depends on your plan. Reopening a saved analysis is always free. If you need a higher limit, you can upgrade your plan.
Find your backlink gaps
Enter your domain and up to four competitors, and get a ranked prospect list in seconds.