Don's Tools · SEO & Marketing · Keyword Density Checker

Keyword density checker

Analyse word and phrase frequency in your content, right in your browser. Nothing is uploaded.

Phrase length
Keyword Density Checker is a free SEO tool that analyses word and phrase frequency in your content entirely in your browser, with nothing uploaded. It counts single words and two or three-word phrases, shows each one's count and density percentage, can ignore common stop words, and flags phrases that may be over-used.

Files are processed in your browser and never uploaded.

How to use Keyword density checker

  1. Add your text

    Type or paste your text into the input box. Everything is handled by your own browser, so nothing is sent to a server.

  2. Set the options

    Choose Ignore common words. The options are visible from the start, not hidden until you paste something.

  3. Read it and keep a copy

    The output updates as you type, so there is nothing to submit and nothing to wait for. Copy report, Don puts the result on your clipboard.

What this tool does

Single, two and three-word phrases

Count single words, two-word phrases and three-word phrases, because a page usually ranks for a phrase rather than a single term.

Counts and density percentages

Each entry shows how many times it appears and what percentage of the text it is, which is the number that matters.

Ignore common stop words

Ignore common words takes out the, and, of and the rest, so the list is about your subject rather than English grammar.

Over-use flagged in red

Anything used often enough to look like stuffing is flagged, which is a more useful signal than the raw count.

Works offline, no sign-up

The text is analysed in your browser, so unpublished copy is never uploaded, and Copy report takes the results with you.

Frequently asked questions

Is my content uploaded anywhere?

No. The text is analysed entirely in your browser with nothing uploaded, so unpublished drafts stay private. It works offline once loaded.

What is a good keyword density?

Around 1 to 2 percent for your main keyword is natural. Much higher can read as keyword stuffing, so phrases above about 4 percent are flagged in red.

What do one, two and three words mean?

They control phrase length: single words, two-word phrases or three-word phrases, so you can find both individual terms and longer key phrases.

Why ignore common words?

Words like the, and and of appear constantly and are not meaningful keywords, so ignoring them surfaces the terms that actually describe your content. You can turn this off.

How is density calculated?

Density is a phrase's count divided by the total number of counted phrases of that length, shown as a percentage.

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