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Keyword Density Checker

Paste text to see word counts and the most frequent 1, 2 and 3-word phrases with their density.

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Schema Markup GeneratorGenerate valid JSON-LD structured data for Article, Product and FAQ pages.Hreflang Tag GeneratorGenerate rel=alternate hreflang link tags for multilingual sites, with presets and URL auto-fill.Meta tags generatorGenerate SEO and Open Graph meta tags for your pages.Robots.txt generatorBuild a correct robots.txt file from structured fields: the crawler to target, the paths to allow and disallow, one or more sitemaps (relative paths are made absolute), and optional crawl-delay and host lines. It manages how search engines crawl your site — remember it is a crawl directive, not a security barrier.Slug generatorTurn any title into a clean, URL-friendly slug.UTM builderBuild tracked campaign URLs with utm_source, medium and campaign.

Keyword Density Checker is free to use as often as you like, directly from this page. It sits under SEO in our catalogue, alongside Schema Markup Generator and Hreflang Tag Generator.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is Keyword Density Checker?

Paste text to see word counts and the most frequent 1, 2 and 3-word phrases with their density.

When would I actually use this?

Before publishing: checking a title and description will not be truncated, tagging a campaign link consistently, and spotting keyword stuffing before a reader does.

What is the most common mistake?

Optimising for a character count. Search engines truncate by pixel width, not by character, so a title of capitals and wide letters is cut well before one of the same length in narrow ones.

Where do the figures come from?

Length guidance reflects what search results have displayed in recent testing, not a documented limit — engines rewrite titles freely and the thresholds move. Treat them as a safe range, not a rule.

Further reading

All guides →
ExplainerKeyword Density Is a Dead Metric, and What Replaced ItDensity counted occurrences because retrieval once counted occurrences. TF-IDF, then BM25 with its saturation curve, then embeddings replaced it. Here is the same 800-word page scored three ways, and why the three disagree.GuideTitle Tags, Meta Descriptions, and What Search Engines Do With ThemWhat Google's own documentation says about rewriting title links and about the meta description, rather than what SEO folklore says. Then the measurable part: titles are truncated by pixel width, so two titles of exactly sixty characters can render 204.55 pixels apart and only one of them survives.GuideStructured Data: What Search Engines Actually Use It ForSchema.org markup buys eligibility for a rich result, never a guarantee and never a ranking boost. Here is which types still produce something visible in 2026, what each one requires, and the one rule that gets sites penalised.GuideWhat Makes a URL Slug Good: Stability, Readability and the Conflict Between ThemA slug has two jobs that pull against each other: it is a permanent identifier and it is a piece of readable text. Length, hyphens, stop words, dates, non-ASCII characters and the identifier-plus-slug pattern that gets both properties — with the real numbers from a site that localises 1,736 tool slugs into six languages.GuideUTM Parameters: The Five Fields and the Discipline That Makes Them WorkEach of the five fields has one job, and attribution rarely breaks on the mechanism — it breaks on inconsistent values. Here are the naming rules, the case-sensitivity trap, and the internal-link mistake that destroys the original attribution.How-toHow to Write a robots.txt: Directives, Matching, and What It Cannot HideFour directives, two wildcards, one file at the host root. It is a crawl instruction and nothing more — it does not remove a page from search results, it does not restrict access, and it publishes every path you list in it.