SEOSTUDIO™ · SEO & WEBMASTER

Keyword Density Analyzer

Analyze word and phrase frequency in pasted text, search a target keyword, filter stop words, and export CSV. No invented ideal density or ranking data.

SEO & WEBMASTER · LOCAL PROCESSING

Your input stays in the browser. This tool does not request a website or external API.

Calculated when required fields are complete.

What problem does this tool solve?

Editors and website owners need to see which terms dominate a draft. The Keyword Density Analyzer examines word frequencies and repeated phrases without suggesting an artificial ideal keyword percentage.

Six practical questions answered

How many times does my target keyword appear?

Paste the text and enter your target term. The tool shows its count, including terms that do not appear in the most frequent results.

How is keyword density calculated?

For a single word, divide its occurrence count by the total word count and multiply by 100. For multiword phrases, this tool divides occurrences by the number of possible consecutive word groups of that length.

Which words occur most often in my article?

The analyzer lists frequent individual words and selected two-word and three-word phrases, with their counts and relative shares.

How can I spot unnecessary keyword repetition?

Review the highest-frequency terms and then read the relevant passages in context. A frequent word is not automatically a problem when the topic requires it.

Is there an ideal keyword density for Google?

No universally valid ideal percentage exists. Relevance, readability, and the reader’s intent matter more than a particular occurrence count.

How can I analyze long-tail phrases in a draft?

Review the two-word and three-word combinations. These reveal repeated consecutive phrases without inventing combinations from words that were separated in the source text.

How it works, with an example

Counting is case-insensitive; hyphenated words and apostrophes stay within a token. For an n-word phrase: share = occurrences ÷ max(0, word count − n + 1) × 100. Overlaps count. The stop-word filter hides rows without changing word order or the denominator. The table shows up to 30 frequent terms per phrase length; target-keyword counting is independent. Limits: 200,000 characters and 50,000 words.

Practical example

An editor pastes a guide and checks whether specialist terms are repeated unnecessarily or whether important subjects receive little attention in the wording. Frequency results guide a manual editorial review.

Additional use cases

  • Find repeated terms in a draft.
  • Review two- and three-word phrases.
  • Export counts as CSV for editorial review.

Frequently asked questions

Is a 2% keyword density always best?

No. A single target percentage is not a reliable rule for all content.

Can I analyze a full article locally?

Yes, within the displayed input limits and your browser’s resources.

Can I filter stop words from the frequency table?

Yes. The optional filter hides common function words and phrases containing them from the table. It does not change the source text or the percentage denominator.

Can I export keyword frequency data?

Yes. Download the frequency results as CSV.

Does the density analyzer check Google rankings?

No. It analyzes only the text you provide.

Related tools for your next step

Review content quality alongside search intent

A frequency list does not replace editorial judgment. We help develop useful SEO/GEO content and a clear topic structure. Your consultation inquiry is free and carries no obligation.

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Editorial team: SEOSTUDIO · Updated November 9, 2026