AEO ENGINE FREE TOOL
Free Keyword Density Checker
Who this tool is for: Built for SEO teams, content editors, founders, and agencies reviewing landing pages, articles, briefs, and AI-search source content before publication.
Analyze pasted text
Your text stays in this browser. Add exact phrases separated by commas.
Paste text above to see word and phrase density.
What this tool measures
- Total words, characters, sentences, and unique words
- Single-word frequency and density
- Custom multi-word phrase frequency and density
- Optional common stop-word filtering
- Sortable results for content QA
How it works
- Paste text
- Optionally add comma-separated phrases
- Choose whether to remove common stop words
- Review and sort the results
- Edit for clarity, then analyze again
Why it matters for AI search and revenue
Keyword repetition can reveal weak editing, boilerplate, or a page that overuses one phrase while missing related concepts. Search and answer engines need clear, complete content, not mechanically repeated keywords.
How AEO Engine executes beyond the tool
AEO Engine combines content analysis with intent research, evidence, structured data, internal linking, and citation monitoring so pages are built to answer buyer questions and earn trust.
Use cases and examples
- Check whether a landing page repeats its primary phrase unnaturally
- Measure exact product or service phrases before publishing
- Compare a brief with the final draft for topic drift
- Find filler words that dominate a short answer block
Comparison and alternatives
Basic density calculators report one percentage. This tool also shows custom phrases, stop-word filtering, document statistics, and transparent local analysis without fetching a URL or requiring lead capture.
FAQ
What is keyword density?
Keyword density is the number of times a word or phrase appears relative to the document's total word count. It is a descriptive metric, not a universal ranking target.
What keyword density is best for SEO?
There is no reliable ideal percentage. Write naturally, cover the topic completely, and use density to catch accidental repetition or missing terminology.
Does this tool upload my text?
No. The checker analyzes pasted text locally in your browser and does not send the content to an analysis API.
How is phrase density calculated?
The tool counts exact consecutive phrase matches and divides the matched phrase words by the document's total word count.
Next step
Analyze keyword density, word frequency, phrases, sentence count, and unique words in pasted text. Free, private, browser-based, and built for useful content review.