Keyword Density Analyzer

See which words your content actually emphasises. Paste it in and this lists the top keywords by frequency — handy for checking your page is about what you think it is, without overstuffing.

Free vs paid — when to upgrade

What this free tool is great for: a quick, one-off job with no signup — it runs entirely in your browser, so nothing leaves your device and there's nothing to manage.

Its honest limit: it checks or generates one thing in your browser — it won't track rankings over time, monitor changes across many pages, or optimise at scale.

Where Frase does more: Density is a blunt signal. To optimise content against what's actually ranking — topics, questions and terms competitors cover — an AI SEO tool like Frase does the heavy lifting.

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What keyword density is — and what it isn't

Keyword density is simply how often a word or phrase appears in your text, expressed as a percentage of the total. This tool counts your content and shows you which terms you're actually emphasising, which is genuinely useful information. What it is not — despite a decade of bad advice — is a dial you should tune to some magic number. Understanding the difference between "a signal worth reading" and "a target worth chasing" is the whole point, and it will save you from optimising your content in exactly the wrong direction.

Why the old "target percentage" is dead

For years, SEO folklore insisted you should hit a keyword density of one to three percent, as if search engines were counting. They aren't, and they haven't for a very long time. Modern search understands language, not word-frequency ratios. It reads meaning, recognises synonyms and related concepts, and judges whether a page genuinely covers a topic. Writing to hit a percentage produces stilted, repetitive text that reads as though it were built for a machine — because it was. The moment you find yourself awkwardly wedging a phrase in to bump a number, you've left useful territory and entered self-sabotage.

What density is still good for

So why look at it at all? Because it's an honest mirror. Density won't tell you what to add, but it reliably tells you two things. First, whether you've drifted off topic — if your target phrase barely appears while unrelated words dominate, your page may not actually be about what you think it is. Second, whether you've overdone it — if one phrase towers over everything else, you're probably repeating yourself in a way that reads badly to humans and looks manipulative to search engines. Used as a diagnostic rather than a target, density is a quick gut-check on focus and balance.

Keyword stuffing and how it backfires

Cramming a keyword in unnaturally — the practice known as keyword stuffing — is one of the oldest tricks in the book, and one of the most reliably punished. Search engines treat it as a spam signal, and the pages that do it tend to read so awkwardly that humans bounce anyway, sending a second negative signal. The irony is brutal: the technique meant to boost rankings actively suppresses them while destroying the reader experience. If a term appears so often that a human would notice and be annoyed, you're past the point of diminishing returns and into the zone of active harm.

From density to topical coverage

The modern replacement for "hit this percentage" is "cover this topic thoroughly." Search engines evaluate whether a page addresses the concepts, questions and related entities a searcher expects — not whether it repeats one phrase enough times. A genuinely useful article about email marketing naturally mentions deliverability, segmentation, automation, open rates and subject lines, because you can't cover the subject well without them. That natural vocabulary is what signals real expertise. So instead of counting your main keyword, ask a better question: have I covered everything a reader searching this term would want answered? Breadth and depth beat repetition every time.

How to actually optimise a page in 2026

The practical workflow looks nothing like keyword-counting. Start with search intent: what does someone typing this query actually want — to buy, to learn, to compare, to fix a problem? Match your format to that intent. Then use your primary term naturally where it genuinely belongs: the title, an early paragraph, a heading or two, and wherever it reads normally in the body. Weave in the related concepts and questions that a thorough treatment demands. Structure the page with clear headings so both readers and crawlers can follow it, and link it sensibly to related pages on your site. Do all that and your keyword density lands in a healthy range on its own — as a by-product of good writing, never as a goal.

The role of headings, structure and internal links

Where a keyword appears matters far more than how often. A term in your title tag and an H2 heading carries real weight, because those locations tell search engines what the page is organised around. The same word buried twenty times in body text does very little. Structure also helps readers, who scan headings before they commit to reading, and internal links pass context and authority between related pages. Optimising on-page is much more about putting the right terms in the right structural places, and covering the topic completely, than about tuning a frequency. Density is a rear-view mirror; structure and coverage are the steering wheel.

Synonyms, entities and how search reads meaning

The reason density stopped mattering is that search engines stopped reading words in isolation and started reading meaning. Modern systems recognise that "car," "vehicle" and "automobile" point at the same concept, and they map the entities — people, places, products, ideas — a page discusses and how those relate. This is why a page can rank for a term it barely uses by name, simply because it covers the surrounding concept thoroughly and unmistakably. It also means natural writing is now the optimised writing: when you explain a topic properly, you automatically use the synonyms and related entities that signal genuine coverage, without ever thinking about frequency. Write for a knowledgeable human and you're writing for the semantic engine too, because the two now want the same thing — clarity, completeness and real subject-matter depth.

From counting words to writing what ranks — where Frase does more

Density is a blunt, backward-looking signal: it describes what you already wrote. The harder, more valuable question is forward-looking — what should this page cover to compete with the results already ranking for your term? Answering that by hand means opening the top ten results, reading each, and noting the topics, questions and subtopics they all hit. An AI SEO tool like Frase does that research for you: it analyses what's ranking, surfaces the questions and terms the best pages cover, and builds a brief so your content is comprehensive by design rather than by luck. Use this analyzer to sanity-check focus and catch stuffing; use a research tool to know what "thorough" actually means for your specific keyword before you write.

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