CheckSEO Blog
Practical SEO guides, tied to the tool that lets you check your own site — no fluff, no signup.
On-Page SEO
What Is Keyword Density, and How Much Is Actually Too Much?
Keyword density isn't the ranking factor most people think it is. The real formula, healthy ranges by content type, and a free checker to test your own page.
5 min read
Technical SEORobots.txt Checker: How to Test Your File Before It Blocks Google
One wrong line in robots.txt can deindex your entire site. See the most dangerous robots.txt mistakes and test yours free with CheckSEO's Robots.txt Checker.
6 min read
Technical SEOHow to Validate Your XML Sitemap (and Fix the Errors Google Actually Cares About)
Validate your XML sitemap in seconds. See the 7 most common sitemap errors that block Google from crawling your pages, and exactly how to fix each one — free, no signup.
6 min read