Keyword Density Checker

The Keyword Density Checker analyzes body copy to show how often each meaningful term appears and whether any keyword has crossed into over-optimization territory. Paste a blog post or page draft into the textarea and the tool tokenizes it live, strips a built-in list of roughly sixty common English stopwords (the, and, for, with, your, and the rest), ignores one-character fragments, and builds a ranked table of the top twenty terms with counts and density percentages. Density is computed against the total word count, so the number reflects how the page reads to a crawler rather than just the filtered list. Stat tiles summarize total words, unique terms, and the current top keyword, and any term at or above 3% density gets a red badge, matching the warning printed below the table that such levels can read as keyword stuffing to search engines. That is the practical use case: catch accidental repetition before publishing, verify that your primary keyword appears often enough to be topically obvious, and spot stuffed copy from freelance drafts before they go live. Because the analysis runs instantly in the browser, you can iterate on wording and watch the density numbers move in real time without exporting anything.

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   Paste the full body text of your article into the Body text textarea — the word count updates live in the hint above it.

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   Read the Total words, Unique terms, and Top keyword stat tiles for a quick overview of the copy.

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   Scan the keyword table: terms are ranked by count with density percentages, and anything at 3% or more gets a red badge.

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   Watch for one term dominating the table — a single term far above the others usually signals repetition or stuffing.

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   Edit your copy, paste the revised version, and compare; the analysis runs instantly so you can iterate until the top keyword sits in a healthy range.

• Pre-publish content audits — scan drafts for accidental over-repetition of the target keyword before going live.
• Freelance writer reviews — quickly vet submitted articles for keyword stuffing without manual counting.
• Competitor analysis — paste a ranking competitor's body copy and compare term emphasis against your own draft.
• Content refreshes — re-analyze aging posts to spot drifted keyword focus after multiple rounds of edits.
• Product description QC — check e-commerce copy for stuffed terms that could trip spam filters.
• Briefing writers — show new contributors which terms the page must include and at what rough frequency.

• Treat the 3% red badge as a warning zone, not a hard penalty line — but if your primary term sits far above it, rewrite for humans.
• Remember that density is a diagnostic, not a ranking lever; Google uses semantic analysis, so rank topics by coverage, not repetition.
• Run the checker on rendered body text only — it analyzes copy, not meta tags, alt text, or headings outside the pasted content.
• Compare densities across your own top pages and your competitors' pages to calibrate a realistic term budget for your niche.
• Keep the primary keyword naturally in the title, first 100 words, and at least one heading — the table tells you if the body overdoes the rest.
• Re-run after every major edit; term drift during revision is one of the most common silent SEO regressions.

• Run the checker on your best-performing page to learn what a healthy density profile looks like for your niche.
• Paste competitor copy and compare top terms — the gap between the two lists becomes your content brief.
• Remember the tool strips stopwords only for analysis, never from your published page.
• Check density after the editor's final pass, since heavy edits shift term frequency more than first drafts do.