SEO Tools
Free tools to boost your SEO strategy
Keyword Gap Analysis
Compare your site against your competitors to reveal the keywords they target that you're missing. Enter your website and one or more competitor domains to find your biggest content opportunities.
Up to 3 competitors. Example: competitor1.co.uk, competitor2.com
We scan up to 20 pages per site and compare the keywords each one targets. Larger sites may take up to a minute.
What is keyword gap analysis and how does this tool work?
Keyword gap analysis is the process of finding keywords your competitors target but your website does not. Closing those gaps lets you target valuable new terms, fill content holes and attract more relevant traffic.
This free tool crawls your site and each competitor's site, reads the title and main heading on every page, and works out the keyword phrases each site actively targets. It then compares the lists to show the phrases your competitors go after that you're missing (your opportunities), plus the ones you both share. Each missing keyword gets an opportunity score based on how many competitors target it and how specific it is.
A note on how this differs from paid tools: premium suites like SEMrush or Ahrefs compare live search-ranking data from their own paid databases. This tool instead compares the keywords each site targets on its pages, which needs no subscription and gives you a fast, practical starting point for your content strategy. Focus first on the missing keywords with the highest scores.
What is the Keyword Gap Analysis Tool?
Uncover untapped SEO opportunities with this free keyword gap analysis tool. By comparing your website's targeted keywords to those of your competitors, you can instantly reveal the keywords they're going after that you're missing — so you can strengthen your content strategy and gain a competitive edge in UK search results.
Key Features
Head-to-Head Comparison
Enter your domain and up to three competitor domains, and the tool crawls each site to compare the keyword phrases every site targets on-page.
Missing Keyword Discovery
See the keywords your competitors target that your site does not — the content gaps that represent your clearest opportunities.
Opportunity Scoring
Each missing keyword gets an opportunity score based on how many competitors chase it and how specific it is, so you know what to prioritise.
Overlap & CSV Export
View the keywords you already share with competitors for benchmarking, and export the full analysis to CSV to plan and track your work.
How to Use This Tool
Enter your domain
Type your website address (for example https://yourwebsite.co.uk). The tool will scan up to 20 of your pages.
Add competitor domains
Enter one to three competitor domains, separated by commas. Each competitor site is scanned the same way.
Review your gaps
Examine the missing keywords sorted by opportunity score, check the overlap for benchmarking, then create or optimise content around the best opportunities.
Why This Matters for SEO
A keyword gap tool automates the comparison between your site and your competitors, saving you hours of manual work and surfacing actionable data. It helps you prioritise keywords with real business potential and uncover missed opportunities for new content or optimisation. The best opportunities are usually the missing keywords with the highest scores — target those first, publish content around them, then re-run the analysis periodically to stay ahead of your competitors.
Frequently Asked Questions
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