How to Do a Content Gap Analysis That Finds Real Opportunities

Most content gap analyses end with a long export of keywords your competitors rank for and you do not.

Most of that export is noise.

Some topics you already cover under different wording. Some are sitting in a writer's queue. And some would put a new blog post in direct competition with a page you rely on.

This guide shows you how to do a content gap analysis that survives those problems. It is the same seven-step method my automated gap pipeline runs, done by hand.

What a Content Gap Analysis Should Give You

A content gap analysis finds topics your search competitors cover that your site does not, then filters them down to ideas worth writing.

Every topic on the final list should pass three tests:

• New: you do not already have it, plan it or have it in draft.
• Safe: it will not compete with a page that already ranks or sells.
• Wanted: there is evidence people search for it or ask about it.

Here is how that compares with a typical tool export:

The export is raw material. The filtered list is a plan.

Before You Start

You need five things:

• A short competitor list. Three to five sites that rank for your main keywords.
• Your sitemap and Search Console access. These tell you what you already publish.
• Your content calendar and drafts. Whatever form they live in: a sheet, a board, a folder.
• A spreadsheet. One tab for your pages, one per competitor, one for the exclusion list.
• A keyword tool. Only needed at the end, to check demand.

Set aside proper time for the first round. It takes longest, because nothing has been excluded yet beyond your own site.

Step 1: Choose Competitors Who Win in Search

Your gap analysis is only as good as the sites you compare against.

The trap is using business competitors. The firm you lose tenders to might have a weak website. The sites taking your clicks might be publishers, comparison sites or a rival two counties away.

To find your real search competitors:

1. List the five to ten keywords that matter most to your revenue.
2. Search each one and note which domains appear repeatedly.
3. Keep the sites that look like you: same kind of business, same kind of pages.

Leave out marketplaces, encyclopaedias and giant directories. They cover everything, so they make every topic look like a gap.

I go deeper on this in my guide to SEO competitor analysis.

Step 2: Inventory Your Own Content

Before you look at anyone else, write down what you already have.

Start with your XML sitemap. Google describes a sitemap as a file where you provide information about the pages and other files on your site. It is your own list of what you publish, which makes it the natural starting point.

Then collect three things for every URL:

• The page title. Slugs are often vague or out of date. Titles tell you what each page is really about.
• The page type. Service, category, location, blog post, guide.
• The main topic, in a few words. You will match gaps against this column.

Finally, read your homepage. It shows which services and themes the business leads with, and gap topics should support that positioning, not pull against it.

Note: Sitemaps can be incomplete. Compare the URL count with the Page indexing report in Search Console. If the numbers are far apart, crawl the site too.

Step 3: Harvest Competitor Pages

Now run the same collection on each competitor: sitemap URLs, titles and page types.

Group each competitor's pages by section. Their blog, guides, service pages and resources usually sit in separate folders, which makes the topics easier to compare.

If a competitor has no usable sitemap, my walkthrough on finding every page on a competitor website covers the other routes.

A keyword tool's gap report is a useful second source here. It shows which competitor pages earn traffic, so you can see which of their topics actually work.

But do not start with it. Start with the pages, because pages are what you will build.

Step 4: Build Your Exclusion List

This is the step most gap analyses skip, and it is why their lists disappoint.

Your exclusion list holds every topic you should never be offered as a gap. Put it in one column, one topic per row:

The last row matters more than it looks.

"How long does a loft conversion take" and "loft conversion timeline" are one article. If your list only catches exact matches, rewordings slip straight through.

Step 5: Pull Out the Gaps

Now compare competitor topics with your exclusion list.

Work at topic level, not keyword level. A competitor page might rank for dozens of keywords, but it represents one topic. So do your candidate gaps.

For each competitor topic:

1. Check it against the exclusion list for exact matches and rewordings.
2. If it matches, drop it.
3. If it does not, add it to a candidates tab with a working title.

Note how many competitors cover each candidate. A topic three competitors have built pages for is a stronger signal than one only a single site covers.

If your candidate list is long, group it before you go further. My comparison of keyword clustering methods explains how to merge near-duplicates without merging topics that need separate pages.

Step 6: Check Each Gap for Cannibalisation

A topic can be new to your site and still be a bad idea.

The risk is a new article that targets the same search as a page you already have. When that happens, the two pages compete, and the one you care about can lose.

For every candidate, ask:

• Does an existing page already answer this intent? Search the candidate topic and compare the results with those for your nearest page's main keyword. If the same URLs rank for both, it is not a gap. It is an update to that page.
• Is it close to a service or category page? If so, reframe it as supporting content. A post on choosing a provider can support your service page, while a post on "X services" would fight it.
• Is your existing page simply weak? Then the fix may be improving or merging that page. My content pruning guide covers when to update, merge or remove.

My full process for this check is in the guide on avoiding keyword cannibalisation.

Step 7: Validate Demand and Prioritise

Until you check demand, every gap is a guess.

A topic can look obvious and still have nobody searching for it. So label your candidates unvalidated until a demand check has been run.

Check demand two ways:

• Search volume for the topic's main phrasing and close variants, from any keyword tool.
• Customer questions from sales calls, enquiry forms and reviews. Some of the best topics have little measurable volume but come up in every sales conversation.

Then rank what is left:

Drop anything you would not be proud to publish, whatever its volume.

Turn Your Best Gaps Into Briefs

A good content gap analysis gives you a short list of topics that are new, safe and wanted. That short list beats a long export every time.

Your first action: build the exclusion list for your own site today. Even before you look at a competitor, it will show you how much you already cover.

Each approved topic then needs a plan before anyone writes it. My checklist of what goes into an SEO content brief covers that, and my walkthrough on automating content briefs shows how to speed it up.

If you want the harvesting, exclusion and round-by-round filtering done for you, that is what my content gap analysis automation does. It works best with a competitor analysis run behind it and a clear content strategy in front of it.