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Keyword Density Checker

Analyze keyword frequency and density in your content to optimize for search engines without over-stuffing.

What is Keyword Density Checker?

Keyword density is the percentage of times a keyword or phrase appears in your content relative to the total word count. The Keyword Density Checker by SlapMyWeb analyzes your text and shows you exactly which words and phrases appear most frequently, their count, and their density percentage. It supports 1-word, 2-word, and 3-word phrase analysis (n-grams), automatic stop word filtering, and visual distribution bars so you can quickly spot over-optimized or under-used keywords.

How to Use Keyword Density Checker

  1. 1

    Paste your content

    Copy and paste your article, blog post, or page content into the text area. The tool works with any length of text.

  2. 2

    Configure analysis options

    Toggle stop word exclusion, set minimum word length (1-5 characters), and choose between 1-word, 2-word, or 3-word phrase analysis.

  3. 3

    Review the results

    The tool shows total words, unique words, and average word length at the top. The table below lists the top 25 keywords sorted by frequency with count, density percentage, and visual bars.

  4. 4

    Optimize your content

    Aim for 1-2% density for primary keywords and 0.5-1% for secondary keywords. If any keyword exceeds 3%, consider reducing its usage to avoid keyword stuffing penalties.

Features

  • Supports 1-word, 2-word, and 3-word phrase analysis
  • Automatic stop word filtering (60+ common English words)
  • Configurable minimum word length (1-5 characters)
  • Visual density distribution bars
  • Total words, unique words, and average word length stats
  • Top 25 keywords sorted by frequency
  • One-click export to clipboard in TSV format
  • Real-time analysis as you type

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Frequently Asked Questions

What is a good keyword density for SEO?+
There is no exact perfect number, but most SEO experts recommend 1-2% for your primary keyword and 0.5-1% for secondary keywords. Anything above 3% may be flagged as keyword stuffing by search engines.
Does Google penalize keyword stuffing?+
Yes. Google's algorithms (especially since the Panda update) can detect unnatural keyword repetition. Over-stuffed content may be demoted in rankings or receive a manual action. Write naturally for users first.
Should I exclude stop words from the analysis?+
Yes, for most use cases. Stop words like "the", "is", "and" appear frequently in all text and aren't useful for SEO analysis. Excluding them lets you focus on meaningful content keywords.
What are n-grams and why should I check 2-word and 3-word phrases?+
N-grams are sequences of N consecutive words. Checking 2-word and 3-word phrases helps you find long-tail keyword opportunities and spot phrase-level over-optimization that single-word analysis might miss.
How is keyword density calculated?+
Keyword density = (Number of times keyword appears / Total word count) x 100. For example, if "seo tools" appears 5 times in a 500-word article, its density is 1%.
Can I use this tool for competitor content analysis?+
Absolutely. Copy a competitor's page content and paste it into the tool to see which keywords they're targeting and at what density. This can inform your own content strategy.