Free Online Keyword Density & N-Gram Analyzer
Evaluate keyword frequency, single and multi-word phrase density, stop-word filtering, and SEO optimization ratios directly in your browser.
About This Tool
The Keyword Density & N-Gram Analyzer calculates single-word and multi-word phrase occurrences in your text. It filters out common stop words and alerts you if any keyword exceeds recommended SEO density thresholds (typically 1–3%), helping you avoid search engine over-optimization penalties.
How to Use This Tool
- Paste or type your article, blog post, or web copy into the input area.
- Toggle stop-word removal or adjust minimum word length as needed.
- Review the ranked 1-word, 2-word (bi-gram), and 3-word (tri-gram) density tables.
- Check the optimization warnings to identify potential keyword stuffing.
Why Use This Tool
- Find exact keyword frequency and percentage density for target SEO terms.
- Uncover recurring multi-word phrases and n-grams across your copy.
- Protect against search engine penalties caused by excessive repetition.
- 100% private and client-side—no content is sent over the network.
Frequently Asked Questions
What is an ideal keyword density for SEO?
Most SEO professionals recommend keeping primary keyword density between 1% and 2.5%. Anything above 3.5% may appear unnatural or trigger keyword stuffing filters.
What are n-grams in text analysis?
An n-gram is a contiguous sequence of n items from a text. A 1-gram is a single word, a 2-gram is a two-word phrase (e.g., 'developer tools'), and a 3-gram is a three-word phrase (e.g., 'free online tools').
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