This unofficial Google SEO checklist definitely accounts for MUCH of the work SEO companies do for onsite and offsite SEO work! Please check out this infographic as it gives you an overview of all the standards in one convenient place! Special thanks to the The Sherwood Group as I stumbled on this via Linkedin! BIG thanks to Single Grain and Backlinko for putting this together with their knowledge!!!!
This infographic includes Google’s ranking properties, domain and backlink factors, plus many more that you can use to help increase your website ranking. Though Google is constantly changing its algorithms this list should serve you well for the time being. You may want to keep it for future reference too!

Author: Jeremy Broekman
https://broekmancomm.com As an expert in marketing, branding, advertising, social media, graphic design and website development, Jeremy trains corporate, entertainment industry, real estate, start-up and nonprofit C-suite and V-suite executives. Jeremy leads summits and seminars that show professionals how to launch successful marketing campaigns and manage effective promotions. He coaches and consults teams and individuals in the areas of business development, brand strategy and social media. Jeremy is a Spartan racer, charismatic connector and master networker. His presentations are highly motivational and energizing, showing teams how to overcome obstacles and develop a shared vision. Jeremy draws on his experience at Universal Television and Xerox Corporation to train senior managers of Fortune 500 companies.