Keyword Density Checker
Analyze the frequency and density of keywords in your content. The tool breaks your text into single words, 2-word phrases (bigrams), and 3-word phrases (trigrams), filters out common stopwords, and ranks what remains by frequency and density percentage. You get an instant view of what your content is actually about — and whether you might be over-optimizing for any single keyword.
How to Use It
Step 1: Paste your article, blog post, or page copy into the input. Step 2: Toggle between 1-word, 2-word, and 3-word views to see how different phrase lengths appear. Step 3: Look for your primary keyword in the top rankings — if it's not there, you may need to reinforce it. Step 4: Watch for the over-optimization warning. Any keyword above 4% density triggers it, which often correlates with keyword stuffing penalties from search engines.
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Deep Dive: The Complete Keyword Density Guide
Unigrams vs bigrams vs trigrams, the ideal density range for modern SEO, the 4% warning, stopword filtering, the writing-first workflow, and when density won't help you rank.
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Frequently Asked Questions
What density should I target?+
1-3% is a common target for primary keywords in modern SEO. But density isn't a ranking signal anymore — search engines understand context and synonyms. Write naturally, mention your topic, and use this tool to confirm your topic comes through clearly rather than chasing a number.
Why does the tool skip phrases starting with 'the'?+
Phrases where the first or last word is a stopword (the, of, in, etc.) aren't very informative as SEO keywords. Filtering them out keeps the 2-word and 3-word views focused on meaningful content phrases.
Does this replace keyword research?+
No. This analyzes what keywords your existing content emphasizes. Keyword research — finding what people are actually searching for — requires tools with search volume data like Ahrefs, Semrush, or Google Keyword Planner. Use them together: research first, write, then audit with this tool.
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