Keyword Density Analyzer

Enter any website URL into the box to instantly download its textual content and analyze its keyword density. This tool strips away all HTML code, scripts, and styling to evaluate only the readable text exactly as a search engine crawler sees it.

It mathematically calculates the frequency and percentage of every single word used on the page. This is an essential SEO process to ensure your primary keywords are mentioned frequently enough to rank, while simultaneously ensuring you aren't triggering algorithmic penalties for unnatural keyword stuffing.

How it works

When you submit a URL, our backend servers securely fetch the raw HTML of the target page. We then utilize PHP's native DOMDocument engine to meticulously strip out all HTML tags, inline CSS styles, and JavaScript blocks, leaving behind only the pure, human-readable text payload.

Tokenization & Filtering: The raw text is then tokenized (broken down) into individual words. We automatically filter out common English "stop words" (such as the, and, with, this, etc.) because search engines generally ignore them when determining the topic of a page.

Algorithmic Counting: The remaining words are tallied and sorted by frequency. The final "Keyword Density" is calculated as a percentage: the number of times a specific word appears divided by the total number of valid words on the page. In modern SEO, a natural density between 1% and 3% for primary keywords is considered optimal.

Frequently asked questions