Check how often keywords appear in a piece of text.
Paste some text to see keyword frequency.
Density = (times a word appears ÷ total word count) × 100. Common short words (the, and, is, etc.) are excluded by default so the list highlights meaningful terms.
No fixed number — modern search engines look at topical relevance and natural language rather than hitting a specific percentage. Use this as a sanity check for repetition, not a target to optimise toward.
No — it only reports what's already in your text. If a word is far more frequent than everything else, that's worth a look, but writing naturally for readers is more reliable than chasing a density number.