Online Tool Store
Keyword Density & Content Semantic Analyzer
Paste any page content and see keyword and phrase density, ranked and filtered for common stop words, updated live as you type. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
- Word count
- Unique words
- Top phrase
| Keyword / phrase | Count | Density |
|---|
Common stop words (the, a, and, ...) are excluded so the table reflects meaningful terms.
How it works
- Paste in a page's content or draft copy.
- The text is tokenized into words and two-word phrases, with common stop words filtered out.
- The most frequent meaningful terms and phrases are ranked by count and density.
The formula
Density = (occurrences of a term ÷ total word count) × 100. Two-word phrases ("free tools") are only shown if they repeat more than once, to avoid noise from one-off word pairs.
FAQ
What counts as "keyword density"?
The percentage of your total word count that a given word or phrase makes up — a rough signal of how much a piece of content focuses on that term.
Why are common words like "the" and "and" excluded?
Stop words appear in nearly every piece of text and don't reflect topical focus, so filtering them out surfaces the terms that actually characterize the content.
Does high keyword density help SEO?
Not directly — modern search engines look at topical relevance and semantic context far more than raw density. Unnaturally high density can even look like keyword stuffing and hurt rankings.
Is my content sent anywhere?
No — tokenizing, counting, and scoring all happen with JavaScript in your browser as you type.
How we compare
| Feature | Online Tool Store | SEO suite content analyzer | Manual word counting |
|---|---|---|---|
| No sign-up | ✓ | ✗ | ✓ |
| Both single words and phrases | ✓ | ✓ | ✗ |
| Instant as-you-type results | ✓ | ✗ | ✗ |
If you want a quick gut-check on whether your copy is topically focused before publishing, this gives you the ranked terms without a full SEO suite.