diff --git a/readme.md b/readme.md
index 251dee4..44633c7 100644
--- a/readme.md
+++ b/readme.md
@@ -184,6 +184,7 @@ A helpful checklist / collection of Search Engine Optimization (SEO) tips and te
 - [Search Engine Spider Simulator](http://tools.seochat.com/tools/search-spider-simulator) - This tool simulates a search engine by displaying the contents of a web page in exactly the way the search engine bot would see it when it crawls the page: See most prominent or inaccessible page elements.
 - [Screaming Frog SEO Spider Tool & Crawler Software](https://www.screamingfrog.co.uk/seo-spider/) - The Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites links, images, CSS, script and apps from an SEO perspective.
 - [Linkbuilding Spider](https://github.com/fulldecent/linkbuilding-spider) - A PHP project to check if websites are linking to your website.
+- [linkok.com](https://linkok.com) - An online broken link checker app.
 
 ### Structured Data