Editorial Backlinks Resource
8 min readUpdated Aug 12, 2026By David

A backlink gap analysis compares your referring domains with those of realistic SEO competitors to identify websites that link to them but not to you. The output is not a list of links to copy blindly. It is a prioritized set of potential opportunities that still need relevance, quality and acquisition-method review.

The best gap analyses answer three questions:

  1. Which domains repeatedly link to competing pages or brands?
  2. Why did those links exist?
  3. Can we create an equal or better reason for the same type of publisher to reference us?

Current ranking guides from Ahrefs and other SEO publishers use a similar core workflow: choose competitors, find domains they have and you do not, remove weak prospects, analyze relevance and move qualified opportunities into an outreach list.

The terms overlap, but they are not identical.

Competitor backlink analysis studies a rival’s entire backlink profile to understand strategies, assets, anchors, publishers and patterns.

Backlink gap analysis focuses specifically on the missing opportunity set: domains or pages that support competitors but not your site.

A competitor’s existing links are evidence of publisher behavior. If a trade publication repeatedly cites original industry benchmarks, that tells you what kind of asset the publication values. If multiple competitors appear in a software-resource page, the page owner has already demonstrated willingness to list relevant tools.

The opportunity is not guaranteed, but the prospect is more informed than a random domain list.

Gap analysis also helps avoid one of the worst link-building habits: starting with authority metrics and then searching for a reason to justify the prospect. Here, you begin with a real editorial relationship and investigate whether it is replicable.

Step 1: choose real SEO competitors

Do not automatically use your largest business competitors. Your SEO competitors are the sites ranking for the queries and topics you want.

For each target page or topic, record three to five competitors that:

  • rank for the same search intent;
  • operate in a reasonably comparable market;
  • have stronger or similar organic visibility;
  • and are not giant general-purpose sites you could never realistically compare with.

A small SaaS company should not build its entire link plan around Wikipedia, Forbes and Amazon simply because those domains appear in the SERP.

Step 2: export referring domains

Use a backlink index such as Ahrefs, Semrush, Majestic, Moz or another tool you trust. Export referring domains for each competitor and your own domain.

At minimum, keep these fields:

| Field | Why keep it |
|—|—|
| Referring domain | Prospect identity |
| Linking URL | Shows actual context |
| Target URL | Reveals what earned the link |
| Anchor | Helps classify citation style |
| Follow/nofollow/sponsored | Link treatment |
| Domain traffic estimate | Supporting quality signal |
| Authority metric | Comparative screening only |

| First seen / last seen | Freshness |

Step 3: identify domains you are missing

A basic gap is:

competitor referring domains - your referring domains = missing domains

The highest-interest prospects often link to two or more competitors. That does not mean they will automatically link to you, but repeated linking suggests the publisher actively covers the category.

Create a recurrence column:

  • Links to 1 competitor
  • Links to 2 competitors
  • Links to 3+ competitors

Use recurrence as a prioritization signal, not as proof of quality.

This is the step most spreadsheet-only analyses miss.

Open the linking page and classify the reason:

  • journalist citation;
  • original research;
  • statistics source;
  • tool/resource list;
  • guest contribution;
  • partnership;
  • review;
  • directory/profile;
  • broken-link replacement;
  • sponsored placement;
  • existing-content insertion.

Different reasons require different replication strategies.

If the competitor earned a journalist citation because its CEO is a qualified tax expert, you cannot replicate the link by sending a generic sales email. You need an equally qualified source and a relevant story opportunity.

Step 5: remove low-quality and irrelevant domains

Do not let the spreadsheet become a shopping list.

Remove or deprioritize domains with:

  • no topical relationship;
  • obvious link-selling footprints;
  • weak or copied content;
  • irrelevant outbound-link patterns;
  • little current search visibility;
  • pages that no longer exist;
  • links caused by one-off corporate relationships you cannot reproduce.

A crucial field is replicability.

Highly replicable

Resource pages, broken-link replacements, statistics citations, useful tool lists and some guest-contribution opportunities.

Moderately replicable

Journalist coverage, digital PR, podcast appearances and industry roundups. These require a new story or expert fit.

Low replicability

Investor pages, acquisition announcements, customer/vendor relationships, memberships and personal connections.

A good gap analysis saves time by acknowledging when a competitor link is not realistically yours to win.

Step 7: score opportunities

Use a simple scoring model.

| Factor | Weight |
|—|—:|
| Topical relevance | 25 |
| Publisher legitimacy | 20 |
| Link reason replicability | 20 |
| Article/page quality | 15 |
| Audience overlap | 10 |
| Current visibility | 10 |

| Total | 100 |

Do not treat this as a Google score. It is an internal prioritization tool.

Step 8: map each prospect to an outreach tactic

A gap list becomes useful only when every high-priority prospect has a next action.

Examples:

Resource page: suggest a genuinely useful tool or guide.

Broken link: provide a current replacement.

Journalist: add the writer to a qualified media list and watch for relevant opportunities.

Statistics citation: create stronger primary-source data.

Guest contribution: pitch a useful article angle for the audience.

Unlinked mention: offer the original source URL.

Step 9: build the outreach sheet

Recommended columns:

| Column | Purpose |
|—|—|
| Domain | Prospect |
| Linking page | Context |
| Competitor target | What earned link |
| Link reason | Tactic classification |
| Relevance score | Priority |
| Contact | Outreach owner |
| Suggested asset | What you will pitch |
| Status | Workflow |
| Date contacted | Timing |

| Result | Outcome |

This turns analysis into an operating system rather than a one-time audit.

Suppose three competitors in the project-management software market earn links from a remote-work publication.

Competitor A is cited in an article about distributed-team productivity.

Competitor B appears in a resource page listing collaboration tools.

Competitor C is quoted in a survey story about hybrid work.

The domain is clearly relevant, but the three links came from different mechanisms. Your plan might therefore include:

  1. creating a remote-team benchmark;
  2. pitching your free planning template to the resource page;
  3. preparing a qualified workplace expert for journalist outreach.

That is much stronger than emailing the publication: "Three competitors have links from you, can we have one too?"

Backlink gap analysis by page, not just domain

Domain-level gaps are useful, but page-level analysis is more actionable for ranking goals.

For a target keyword, compare the exact pages ranking above you. Which referring domains support those pages? Which asset types attract the links? Which competitor pages are informational while yours is commercial?

Sometimes the answer is not "build more links to the sales page." The answer is "create a linkable supporting asset and strengthen internal linking."

A new website may have too little backlink data for direct comparison. In that case, choose realistic competitors and focus on patterns rather than raw gap counts.

Build an initial mix of:

  • legitimate company/entity profiles;
  • niche publications;
  • resource links;
  • journalist citations;
  • linkable assets;
  • partner or association mentions where genuine.

The goal is a credible foundation, not instant parity with mature domains.

Choosing the wrong competitors

If the sites are not competing for the same search intent, the gap becomes noisy.

Sorting by DR and stopping there

Authority metrics do not tell you why the link exists or whether it is relevant.

Some links depend on relationships, events or corporate structures you do not share.

Ignoring target pages

A competitor may earn links to a research report while you are trying to point everything at a service page.

Failing to create a better reason

"My competitor is listed" is not an editorial value proposition.

For active SEO campaigns, a quarterly review is usually practical. Competitive markets may justify monthly monitoring of new and lost links, while slower niches can use a longer cadence.

The most useful trigger is strategic change: a new target keyword, product launch, major competitor, content cluster or digital PR campaign.

Frequently asked questions

It is the process of finding referring domains or pages that link to relevant competitors but not to your website, then qualifying those gaps as potential link-building opportunities.

What tools can I use?

Ahrefs, Semrush, Majestic, Moz and other backlink indexes can all support the process. The methodology matters more than the specific interface.

No. A gap becomes an opportunity only after relevance, quality, replicability and editorial fit are reviewed.

How many competitors should I analyze?

Three to five realistic SEO competitors is a good starting point. Add more only when they share the same intent and market.

Final takeaway

A backlink gap analysis should not produce a list of domains to copy. It should explain where competitors are earning third-party support, why those links exist and which patterns you can reproduce with a better asset, story or outreach proposition.

Use the data to reduce guesswork, then apply editorial judgment before outreach.