Tools for SEO
Semantic HTML5 viewer
This is a tool I have created to view the semantic html5 structure of a page. It’ll save you a LOT of time!
Google SERP snippet simulator
Another tool I helped to create, to see what your meta titlesand descriptions look like in rhe Google Search Results Page
Schema Organization Markup Assistant
We created these two to assist you in writing correct Schema.org JSON-LD markup for your company or as an individual person.
More SEO tools
Google pagespeed insights for testing how your site loads
Mobile friendly test to see if it is … or isn’t
Structured data testing tool for checking your schema.org markup
TinyPNG for compressing images
Screaming Frog site crawler
SEMrush, of course