Pixpie - Optimize your images and speed up your site on WordPress
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
Pixabay Images 3.0 for WordPress - Search and insert images directly within WordPress
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.
Website Image Speed Test - Beautiful & easy free analysis of the images on your page
Serpstat Website SEO Checker - Check your website's SEO, analyze competitors and keywords