Keyword Density Checker

Analyze keyword frequency and density in your content. Identify over-optimized keywords and surface the most prominent terms in any text.

Your Content

Min. word length

Show top

Exclude common stop words

Show 2-word phrases

Paste content and click Analyze.

Frequently Asked Questions

Keyword density is the percentage of times a specific word or phrase appears in your content relative to the total word count. Formula: (keyword count / total words) × 100. Most SEO experts recommend keeping it between 1–3% for your primary keyword.

Keyword stuffing is the practice of excessively repeating keywords to manipulate search rankings. Google's algorithms penalize it. A density above 3–5% for the same keyword is generally considered a risk factor. Aim for natural, reader-first writing.

Stop words (the, and, is, a, for…) appear in almost every piece of text and carry no SEO value. Excluding them lets you focus on the meaningful keywords in your content. You can uncheck the option to see the full frequency list including stop words.

The tool generates bigrams — every consecutive pair of words in the text — then counts and ranks them by frequency. This surfaces important two-word keyword phrases (e.g., "machine learning", "email marketing") that a single-word analysis would miss.

How It Works

Paste Content

Paste your article, blog post, or any text content into the text area. The tool processes it entirely in your browser.

Tokenize & Count

JavaScript strips punctuation, lowercases all text, optionally removes stop words, then counts single-word and two-word phrase frequencies.

Review Density

Results are ranked by frequency with percentage density shown. Color-coded bars quickly show which keywords dominate your content.

Common Use Cases

Content SEO Optimization

Verify your target keyword appears enough times across a blog post without triggering keyword stuffing penalties. Aim for 1–3% density.

Keyword Stuffing Audit

Identify pages that may have been over-optimized in the past, with a single keyword dominating unnaturally, and rework them before a Google review.

Topic Discovery

Analyze competitor content to discover the most frequently used keywords and phrases in top-ranking articles in your niche.

Content Editing

After writing, run a density check to see if your naturally written content hits your target keyword often enough or if synonyms are cannibalizing focus.

LSI Keyword Analysis

The phrase frequency tab reveals latent semantic keywords — related terms you are already using — which help Google understand your content's topic depth.

Long-Form Content Review

For 3,000+ word articles, use the analysis to ensure thematic consistency and that subtopics are covered with appropriate keyword distribution throughout.