Website Validation and SEO
Here's a random list of useful tools to validate your websites
SEO Validation
- WooRank[ provides SEO validation in addition to link checking, mobile page load time, and many other health checks on your website. ]{style="line-height: 13px;"}
- Google Webmaster Tools
- SEO Checkup generates a rather nice report, but limits free reports to 1 per 30 minutes.
- MOZ Open Site Explorer might be useful(?)
- Majestic