What is a content gap?

A content gap is the absence of content on your website about a topic that matters to your potential customers and for which your competitors rank. Content gap analysis is the systematic process of identifying these gaps — keywords and topics where the competition is visible in the SERP, but you are not.

Content gap analysis answers a key question: what content should your website have to be visible for all important queries in your industry? It is a crucial element of every content marketing strategy.

Why is content gap analysis important?

Content gap analysis is one of the most effective tools for planning a content marketing and SEO strategy. Instead of guessing what to write about, you base decisions on data — and create content with a proven chance of ranking.

Benefits of content gap analysis:

Discovering new opportunities — high-volume keywords where your site isn't visible
Prioritizing efforts — you know which content to create first
Building topical authority — you identify subtopics missing from your thematic clusters
Outpacing the competition — you create better content on topics where competitors already rank
Better funnel coverage — you identify gaps at individual stages of the buyer's journey (TOFU, MOFU, BOFU)

How to conduct a content gap analysis?

1. Identify competitors

Start by identifying your main competitors in the SERP — they don't always overlap with your business competitors:

Check who ranks for your main keywords
Identify 3-5 direct competitors in organic results
Also consider industry portals and blogs that may rank for the same topics

2. Compare visibility

Use SEO tools to compare visibility:

Ahrefs Content Gap — compare keywords your competitors rank for but you don't
Semrush Keyword Gap — analyze visibility gaps between domains
Senuto — compare visibility on the Polish market

The result is a list of keywords your competitors are visible for, but your site is not — these are your "content gaps."

3. Filter and prioritize

Not every content gap is worth filling. Filter keywords by:

Business relevance — is the keyword related to your offering?
Search volume — do enough people search for this keyword? (read how to do keyword research)
Search intent — does the intent match your goals (informational, commercial, transactional)?
Keyword Difficulty — do you have a realistic chance of ranking? (depends on Domain Rating)
Business value — can traffic from this keyword lead to conversions?

4. Plan content

For each identified gap, plan the content:

Content type — blog article, landing page, guide, FAQ
Thematic cluster — which pillar page to assign the article to
Priority — creation order (highest business-value keywords first)
Format — matched to search intent (guide vs comparison vs definition)

Content gap vs content audit

Content gap analysis focuses on missing content, while a content audit analyzes existing content for quality and effectiveness. Both approaches complement each other:

Analysis	Question	Result
Content gap	What's missing?	New content to create
Content audit	What do we have and does it work?	Update, consolidate, or remove

A complete content strategy requires both analyses — first assess what you have (audit), then identify what's missing (content gap).

Example

A cybersecurity company conducts a content gap analysis and discovers that competitors rank for keywords like: "IT security audit," "information security policy," "SOC as a Service" — topics for which the company has no content at all. After creating 15 articles covering these gaps, organic traffic increases by 40% within 6 months, and the site begins ranking for 200+ new keywords.