Keyword Density Checker — Free Online Tool
Analyze your content to find the most frequent keywords and their density.
About Keyword Density Checker
The Keyword Density Checker analyzes any block of text and shows you the total word count along with the top 20 most frequent keywords, each with its count and density percentage. It is a fast way to see whether your content emphasizes the right terms.
An optional stop-word filter removes common words so you can focus on meaningful keywords. Everything is processed locally in your browser, making the tool instant, free, and completely private even for long articles.
How to Use Keyword Density Checker
- Paste your text or article into the input box.
- Leave 'Ignore common stop words' checked to filter out filler words.
- Click 'Analyze' to process the content.
- Review the total word count and the ranked keyword density table.
Key Features
Shows total word count and the top 20 keywords
Calculates count and density percentage for each keyword
Optional stop-word filtering for cleaner results
Handles long articles instantly
100% client-side - your text never leaves the browser
Free with no signup or limits
Frequently Asked Questions
What is keyword density?
Keyword density is the percentage of times a word appears compared to the total number of words in your text. It helps you understand which terms dominate your content.
What is a good keyword density?
There is no exact target, but a natural density of roughly 1-2% for your main keyword is usually safe. Anything that reads as forced or repetitive risks keyword stuffing.
What are stop words and why filter them?
Stop words are common words like 'the', 'and', or 'is' that carry little SEO meaning. Filtering them lets you focus on the keywords that actually describe your topic.
Is my text uploaded anywhere?
No. The analysis runs entirely in your browser with JavaScript, so the text you paste is never sent to or stored on any server.