Extract the most frequent words and phrases from text. Free online keyword extractor for SEO, content analysis, and text mining.
The keyword extractor analyzes your text to identify the most frequently used words and phrases. It filters out common stop words (the, a, is, etc.) and presents the remaining keywords ranked by frequency. This is essential for SEO optimization, content analysis, academic research, identifying themes in large texts, and improving search engine visibility.
Keyword Density = (Keyword Count ÷ Total Words) × 100%Keyword density measures how frequently a word appears relative to the total word count. For example, if a 1000-word article uses a keyword 15 times, the density is 1.5%. SEO best practices suggest keeping keyword density between 1-3% for target keywords.
| Input | Output |
|---|---|
| SEO is important. SEO helps ranking. Good SEO practices matter. | SEO: 3 occurrences (25% density) | important: 1 | ranking: 1 | practices: 1 | matter: 1 |
| The quick brown fox jumps over the lazy dog | quick: 1 | brown: 1 | fox: 1 | jumps: 1 | lazy: 1 | dog: 1 (stop words removed) |
| Data science uses data analysis and data processing for insights | data: 3 occurrences | science: 1 | analysis: 1 | processing: 1 | insights: 1 |