Keyword Density Checker

The Keyword Density Checker analyses any piece of writing and shows you which words appear most often, how many times each one occurs, and what percentage of the total word count it represents. Density is a core signal in on-page SEO and content editing, and seeing it laid out clearly helps you understand what your text is actually about — and whether any term is over-used to the point of sounding unnatural.

For each keyword the tool reports its raw count and its density as a percentage, sorted from most to least frequent. You can limit the results to the top N words, set a minimum word length to ignore tiny tokens, and toggle a built-in English stop-word list so common filler words like the, and and of do not crowd out the terms that matter. The result is a focused view of your real vocabulary.

Everything runs locally in your browser using JavaScript, so nothing is uploaded and no account is required. Paste your text, adjust the options to suit your content, and read the ranked keyword table with counts and percentages. Because the work happens entirely on your own device, drafts, briefs and client copy stay completely private while you optimise them.

Features

• Ranks words by frequency and shows each keyword's count alongside its percentage of the total.
• Optional stop-word filtering hides common English filler words so real terms stand out.
• Adjustable top-N limit keeps the table focused on the keywords that matter most.
• Minimum word length option ignores very short tokens that add noise to the results.
• Unicode-aware word matching handles accented characters and many non-Latin scripts.
• Reports total words, unique keywords and the number shown so you can gauge coverage.
• Runs fully offline in your browser with no sign-up, no upload and no usage limits.

How to use Keyword Density Checker

1. Paste the article, page copy or draft you want to check into the input box.
2. Leave stop-word removal on to focus on meaningful terms, or turn it off to see everything.
3. Set the top-N value to control how many keywords appear in the results table.
4. Optionally raise the minimum word length to ignore short words like of or to.
5. Read the ranked table of keywords with their counts and density percentages.
6. Copy or export the table to track keyword density across drafts or share it with your team.

Benefits

• Helps SEO writers confirm target keywords appear enough without keyword stuffing.
• Reveals accidental over-use of a phrase that can make copy feel repetitive.
• Shows editors what a document actually emphasises versus what it was meant to.
• Speeds up competitor and content audits by quantifying vocabulary quickly.
• Keeps briefs and unpublished copy private because nothing leaves your device.
• Removes the need for spreadsheets or scripts to compute word frequency by hand.

Keyword density is a guide, not a target to chase. Modern search engines understand topics and synonyms, so there is no magic percentage that guarantees rankings. Instead, use the checker to make sure your primary term is clearly present, that related terms support it, and that no single word is repeated so often it reads awkwardly. Natural, well-varied language almost always outperforms text engineered to hit a specific density.

The stop-word toggle changes what the numbers mean. With stop words removed, the percentages are calculated against the full word count but only content words are listed, which surfaces the terms readers actually notice. Turn stop words back on when you want a complete frequency profile — for example, when analysing writing style or comparing filler usage between drafts. Either way, the counts update instantly and privately in your browser.