A content gap analysis is a review that finds the topics, questions and search terms your audience cares about which your website does not yet cover, or covers poorly. The output is a prioritised list of content to create or improve.
How content gap analysis works
There are three common ways to find gaps, and the best analyses use all of them.
Against competitors. SEO tools such as Ahrefs and Semrush compare the search terms several competing sites rank for with the terms your site ranks for. Terms where they appear and you do not are a keyword gap. Choose competitors in search, which are not always your commercial rivals: a local electrician may compete in search with a national trade association’s guides.
Against your audience. List the questions customers ask before they buy, from sales calls, enquiry forms, reviews and support emails. Compare them with your pages. A London removals firm that is asked every week about parking suspensions and council permits, but has no page explaining them, has found a gap no tool would flag.
Within your own pages. Search Console shows queries where a page gets impressions but sits low, often because the page mentions a topic without answering it. Those are gaps inside existing content.
Each potential gap is then checked for search intent, relevance to what you sell and whether an existing page could cover it.
Why it matters
Content plans built on guesswork tend to produce what is easy to write, not what is missing. A gap analysis bases the plan on evidence: real searches, real questions and real competitor coverage.
It also helps build topical authority. A site that answers the full set of questions around a subject, from the basics to the specific edge cases, is more likely to be seen as a dependable source than one with a single page on it.
For a UK business, the gaps are often local or regulatory: costs in GBP, UK rules, regional differences between England, Scotland, Wales and Northern Ireland. Competitors writing generic or American content tend to miss these, which leaves room for a site that covers them properly.
Common mistakes
- Taking a tool’s list of missing keywords as the plan, without checking relevance or intent.
- Comparing yourself with the wrong competitors, such as national brands when your customers search locally.
- Creating a new page for a gap an existing page should cover, which leads to keyword cannibalisation.
- Copying a competitor’s structure and topics so closely that your content adds nothing new.
- Ignoring gaps in the middle of the buying journey, such as comparisons and pricing questions, because they show low search volumes.
How to act on it
Choose three to five search competitors and run a gap report in your SEO tool. Export the results, remove terms that do not fit your services, and group the rest by topic. Add the customer questions you gathered and the weak queries from Search Console.
For each group, decide whether it needs a new page or an improvement to an existing one, then rank the list by closeness to revenue and effort required. Topics near what you sell and quick to cover go first.
Finding and prioritising those gaps is part of my keyword research service, and it feeds directly into the content plan that follows.