Free Keyword Gap Tool
Compare your site with a competitor to find the keywords they rank for in Google's top 20 that your site doesn't rank for at all.
Live Google data · free, no sign-up
How to use the free keyword gap tool
- 01
Enter your domain and a competitor's.
- 02
Pick the country.
- 03
Turn the best gap keywords into new pages or sections.
What is a keyword gap analysis?
A keyword gap (or content gap) analysis lists the searches a competitor gets traffic from that you're missing entirely. It's the most direct way to find content to create: the demand is proven, and the competitor's page shows what Google rewards.
Run it against two or three competitors; keywords that appear for all of them are the ones your market clearly cares about.
Tips for using the keyword gap tool
Compare against several competitors
Keywords that show up as gaps for two or three competitors are clearly important in your market.
Start with easy gaps
Sort by difficulty and tackle gaps under 30 first.
Check the winning page
Look at what ranks with the SERP checker before writing, to match format and depth.
Plan the content
Group gap keywords with the keyword clustering tool so each new page targets a cluster.
Skip the manual work: get an article published to your site every day.
Rankfly finds the keywords your site can actually win, writes a full SEO article for each one, adds images, and publishes it to WordPress, Shopify, Webflow, Wix and more. Enter your website to see your free 30-day content plan.
3-day free trial · $66/month for 30 articles
Keyword Gap Tool FAQ
Where does the data come from?
From DataForSEO, which supplies search volumes from Google Ads data and live Google results to SEO tools worldwide. Every figure is real; when there's no data for a query, the tool tells you instead of guessing.
What if no gaps are found?
Either you already rank for their keywords, or there's little data for the competitor in that country. Try a bigger competitor.
Is it free?
Yes. Search-data tools are limited to 5 runs per person per day because each lookup costs us real data credits. Rankfly customers get this research done automatically for their whole site.
What's the difference between a keyword gap and a content gap?
They're the same idea: searches a competitor gets traffic from that you don't cover.
Why only the competitor's top 20?
Keywords where they rank on pages 1–2 are the ones proven to bring them traffic.
Can I compare two competitors?
Yes. Put one in each field to see what the first ranks for that the second doesn't.
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Related Keywords Finder
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Keyword Difficulty Checker
Check difficulty and search volume for up to 20 keywords at once. Add your domain to see which ones your site can realistically win.
Competitor Keyword Analyzer
Enter a competitor's domain to see the keywords they rank for in Google's top 20, sorted by the traffic they bring, with position, volume and difficulty.
Keyword Clustering Tool
Paste a list of keywords to group them into clusters that one page can rank for together, each with its search intent.
Let Rankfly do your SEO for you.
Enter your website for a free 30-day content plan: the keywords your site can win and the articles Rankfly would write and publish. About three minutes.
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