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Keyword Density & SEO Content Analyzer

Paste an article and a target keyword or phrase to check density, placement, top word frequencies, and the terms that actually appear near your keyword. Everything runs in your browser — nothing is uploaded.

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Density = keyword occurrences ÷ total words. Modern SEO guidance: keep it around 1–2%. Above 4% reads as keyword stuffing.
In first 100 words: — In last paragraph: —
Words that co-occur around the keyword appear here — these are the related terms actually in your text.

About this tool

Counts how often your target phrase appears relative to total word count, checks whether it shows up in the first 100 words and the last paragraph, and surfaces the words that actually appear within five words of it — a quick, honest picture of how a page treats its topic. Density is a sanity check, not a ranking hack: search engines rank content on relevance and usefulness, so aim for the natural 1–2% range and treat anything above 4% as a sign to rewrite, not a dial to tune.

Analysis happens entirely in your browser with plain JavaScript — your article is never uploaded, stored, or tracked.

Found this useful? 113 free, browser-only tools by Yuvrajsinh Jadav — an engineer who ships production AI systems. No account, nothing sent anywhere.