If your work needs Seach Engine Optimization or SEO, you can never go wrong in downloading this extension called SEO-tools. This plug-in gives you quick access to various SEO tools that will help you get information about domains and make technical site audits for SEO errors on any page.

By using the plug-in, you will get information about a page, including Yandex X, Alexa Rang, checking site IP in DNSBL blacklists, HTTP Request, and many more. You can even check SSL certificates and determine the density of keywords on any page. So, if you need an extension to help you with SEO, download this extension now!