You can’t remember everything especially with that huge amount of new information we consume daily. It is always great to have a few sheets that list most essential data we often need to deal with. Below I am listing a few cool cheat sheets most SEOs will find useful:

* Important SEO HTML tags;
* Search engine indexing limits (common indexing limits imposed by search engines on sites that don’t hold a lot of authority);
* Recommended title tag syntax;
* Common canonical issues;
* Important search engine robot user-agents;
* Common robot traps to avoid (how webmasters might unintentionally stop spiders from crawling their sites);
* Robots Meta tag syntax;
* Robots.txt syntax;
* Sitemap syntax.