The keyword density checker works like this: it analyzes word frequency, two-word phrases and focus-keyword density in pasted copy, with stop-word filtering. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.
How to use the Keyword Density Checker
Enter the full URL, domain or content the tool asks for.
Run the check - fetch-based tools query the page server-side.
Read the findings as a list, not a single score.
Fix one issue at a time and re-run to verify.
Features
Checks run server-side so protected pages can be read
Results explain the rule or value behind every finding
Copy and export options for every result list
No account needed for any check
Common mistakes to avoid
Auditing a staging or password-protected URL instead of production
Fixing everything at once instead of one change plus re-test
Treating any single score as a ranking promise
Examples
Input
Result
A 1,200-word article
Top words, top phrases, and your keyword's exact percentage
Best used for
Getting a reliable answer for keyword density checker without installing an app
One-off tasks done in under a minute from any device
Checking results before committing them to something important
Working on a phone where desktop software is unavailable
Privacy
The URL you check is fetched once so the tool can read pages that block cross-origin browser requests. No browsing history is stored, and nothing from your own device is transmitted.
Frequently asked questions
What density should I aim for?
0.5-2.5% reads naturally; above ~3.5% historically correlates with stuffing penalties. Write for readers, then check you did not accidentally over-repeat.
What are the two- and three-word phrase lists for?
They surface the natural keyword phrases your copy actually uses - which often reveals better targets than the single word you planned around.
Can I check copy against a focus keyword?
Yes - enter your focus keyword and its density across the text is reported alongside the overall word frequency ranking.