Image Speed Test - Analyze your website content & make it faster.
Website Grader - Grade your website's strengths and weaknesses in seconds.
ToS;DR - Ratings of website terms & privacy policies
Smaller - Make your websites load faster
Pixpie - Optimize your images and speed up your site on WordPress
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.