Free Keyword Comparison
Your competitor outranks you — but on which topics, exactly? NToolHub's free Keyword Comparison tool extracts the top keywords from two texts side by side and measures their topical overlap. Content strategists use it for gap analysis: your draft versus the page currently winning the SERP.
How to Use the Keyword Comparison
- Paste two texts — e.g. your draft vs a competitor’s page.
- Click Compare to extract each side’s top keywords.
- Check the overlap: shared terms show common topical ground.
- Borrow the competitor’s missing terms to close content gaps.
Features
Paste two texts to get each side's top-10 keywords (stopwords filtered), a shared-keywords overlap percentage, and side-by-side frequency tables — revealing exactly which terms the competitor covers that you don't.
Benefits & Use Cases
Topical gap analysis is the highest-ROI content research: instead of guessing what to add, you see the specific terms and subtopics the winning page covers. Closing those gaps is often all a rewrite needs.
Tips
Compare against the actual top-ranking page for your target query, focus on missing terms that represent real subtopics (not just synonyms), and cover them with genuinely useful content — not keyword sprinkling.
Frequently Asked Questions
What is topical overlap?
The percentage of top keywords two texts share. High overlap means they cover the same ground; low overlap means different angles or missing subtopics.
Which texts should I compare?
Your draft versus the current top-ranking competitor for your target keyword gives the most actionable gaps. You can also compare two of your own pages to avoid cannibalization.
Should I add every missing keyword?
No — add terms that represent subtopics your readers genuinely need. Forcing irrelevant keywords hurts quality more than it helps rankings.
How are top keywords chosen?
The tool filters stopwords and short words, then ranks by frequency. Frequent meaningful words approximate a text's topical focus.
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