Free keyword research tools: Google Keyword Planner, Google Trends, Keyword Tool, io, Term Explorer, Moz's Keyword Difficulty Tool, SEMrush, Ahrefs, GrowthBar. The initial keywords are the starting point of your keyword research process. They define your niche and help you identify your competitors. Each keyword research tool requests an initial keyword, which it then uses to generate a huge list of keyword ideas (we'll talk about this shortly).
The SEO Spider tool can be used to find and fix all kinds of technical SEO errors, including broken links, audit redirects, sitemaps, site architecture, and more.