Keyword Density Checker

What is keyword density?

Keyword density is the share of words on a page that belong to a given keyword or phrase: occurrences × words in the phrase ÷ total words × 100. A 1,000-word article that uses “espresso machine” 10 times has a density of 2 % (10 × 2 ÷ 1,000). In the early days of search, cramming in a keyword could lift rankings; today, search engines understand topics, synonyms and context, and Google has said there is no ideal keyword density.

So why measure it? Because the numbers still reveal two real problems: a page that never mentions its main topic in the places that matter, and a page that repeats a phrase so often it reads unnaturally (keyword stuffing, which violates Google's spam policies).

Placement beats density

Where a keyword appears matters more than how often. This tool checks the positions that carry the most weight:

• Title tag — the strongest on-page relevance signal and the headline in search results.
• H1 and subheadings — confirm the topic and structure of the page.
• URL — a short, descriptive slug (see the Slug Generator).
• First 100 words — tells readers and crawlers early what the page covers.
• Meta description — not a ranking factor, but matching words are shown in bold in search snippets.
• Image alt text — where an image genuinely shows the subject.

Reading the phrase tables

The 1-, 2- and 3-word tables list the most frequent terms; phrases that start or end with a common English stop word (“the”, “and”, “of”…) are skipped. If the top phrases are navigation labels or cookie-banner text, your main content may be thin compared with the template around it. If the top phrases match your topic and its close variants, the page is focused. As a rough signal, density above about 3 % for a single phrase often reads as repetitive — rewrite with synonyms and pronouns rather than chasing a number.

Readability

We compute the Flesch Reading Ease score (and the Amstad variant for German pages). It combines average sentence length and syllables per word: higher scores are easier to read, and 60–70 corresponds to plain language most adults read comfortably. Long sentences are the easiest thing to fix. For counting words in your own drafts, use the Word Counter.

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Outils complémentaires : Keyword Density Checker

• Readability Score Checker — Paste any text — a blog post, landing page or email — and get its readability score on six standard formulas: Flesch Reading Ease, Flesch–Kincaid grade level, Gunning Fog, SMOG, Coleman–Liau and ARI.
• Analyse SEO et audit de site — Collez une URL pour effectuer jusqu’à 70 vérifications de référencement sur la page ainsi qu’un audit complet du site : vitesse Lighthouse, en-têtes de sécurité et SSL, données structurées, liens rompus, fichier robots.txt et robots d'exploration IA, principes de base de l'accessibilité, suivi et consentement, SPF/DKIM/DMARC et expiration du domaine — le tout regroupé en un score unique pour le site, accompagné de corrections classées par ordre de priorité.
• Heading Checker — Visualize the heading outline of any page.
• Meta Tag Checker — See exactly how Google is likely to display your page: title and description measured in pixels, desktop and mobile previews, and every meta tag in the <head>.