Keyword Density Checker

Analyze keyword frequency and density in text.

Runs entirely in your browser. Your data is never uploaded.

About Keyword Density Checker

Keyword Density Checker counts how often each word and phrase appears in your text and shows its density percentage, helping you avoid keyword stuffing.

Keyword Density Checker is one of dozens of free seo tools on Crystal Toolkit. When you open this page, the tool loads in your browser and is ready to use immediately — there is nothing to install and no account to create. Everything you enter is handled locally using fast, modern web technology, so the work happens on your device rather than on a remote server. This approach keeps your information private, removes upload and download waiting time, and lets the tool keep working even on a slow connection once the page has loaded.

How to use Keyword Density Checker

1Paste your content.
2Review the top keywords and densities.
3Adjust your text as needed.

Key features

Generates clean, standards-compliant output you can copy
Previews exactly how your page will look in search and social
Helps you avoid truncation and common SEO mistakes
100% free with no sign-up, account or watermark
Mobile-first design that works on any device

Common use cases

Optimising titles, descriptions and meta tags
Auditing on-page content and keyword usage
Preparing sitemaps and robots files for launch

Why use Crystal Toolkit?

Unlike many online seo tools, Crystal Toolkit runs Keyword Density Checker entirely inside your browser. That means your data is processed on your own device and is never uploaded to a server, so it stays private and the results appear instantly. There is no sign-up, no daily limit and no watermark — just a fast, focused keyword density checker you can use as often as you like, on desktop or mobile. Crystal Toolkit is built and maintained by CrystalSoftonic and is funded by unobtrusive ads, which is how we keep every tool completely free.