Keyword Density Checker

Keyword Density Checker — Analyse SEO Keyword Frequency and Avoid Over-Optimisation

Keyword density is a basic but still-useful SEO signal for on-page content analysis. While Google's algorithms have evolved far beyond simple keyword counting, content that never mentions its primary topic clearly or mentions it so excessively that it reads as stuffed still performs poorly. This checker gives you a clear picture of keyword frequency distribution in any piece of content, helping you find the right balance between topical relevance and natural readability.

How to use this checker

Paste your full article, blog post, product description, or landing page copy into the text area. The tool immediately calculates the word count and shows a frequency-ranked table of the top 30 words with their occurrence count and density percentage. Toggle "Hide stop words" to filter out common words like "the", "and", "of" and focus on your meaningful keywords. To check a specific target keyword or phrase, enter it in the Target Keyword field — the tool highlights exactly how many times it appears and whether the density falls in the recommended 0.5–2.5% range. The visual bar chart makes it instantly clear which terms dominate your content.

What healthy keyword density looks like

A keyword density of 0.5–2.5% is generally the safe range for a primary keyword in a 1,000+ word article. Below 0.5% may signal that your content doesn't sufficiently establish topical relevance for that term — Google needs clear signals about what a page is about. Above 2.5–3% starts to look unnatural and risks triggering over-optimisation filters that can actively suppress rankings. More important than hitting a specific density number is ensuring your keyword and its semantic variants (LSI keywords) appear naturally across the introduction, subheadings, body paragraphs, and conclusion. A well-written piece that uses a keyword naturally at 1.2% outperforms a mechanically stuffed piece at 2.5% every time.

Who uses this tool

SEO content writers use it after drafting an article to verify their primary keyword appears frequently enough before publishing. Content editors use it when reviewing client-submitted articles to check for keyword stuffing that might hurt rankings. SEO auditors use it when analysing underperforming pages to see if keyword frequency issues could be a contributing factor. Students learning SEO use it to understand the relationship between keyword frequency and on-page optimisation.

Privacy and data handling

All text analysis runs 100% in your browser — your article content, keywords, and draft copy are never uploaded to any server or stored anywhere outside your current browser session.