Search specialists auditing a landing page rarely ask for density in isolation—they want the SEO keyword density checker view alongside headings, internal links, and schema. SmartFlexa keeps the math transparent: every alphanumeric token is counted once in the denominator, each row shows raw frequency and percentage, and you can strip stop words so the grid surfaces nouns and verbs instead of glue words.
Use the highlight preview after major rewrites to confirm you did not push important phrases only into footers or disclaimers. Because processing stays in the tab, you can paste pre-rendered HTML source stripped elsewhere, or competitor snippets for training workshops—just remember ethical and contractual boundaries when borrowing text.
Canonical documentation, FAQ schema, and the extended article live on the Check keyword density route; the widget below is the same implementation shared across SmartFlexa hubs.