Just wondered what online website tests or checks you use, prior to launch, or when reviewing your websites.
My list is pretty much:
https://www.ssllabs.com/ssltest/analyze.html?d=sitepoint.com
https://validator.w3.org/nu/?showsource=yes&showoutline=yes&showimagereport=yes&doc=http%3A%2F%2Fwww.sitepoint.com
https://opengraphcheck.com/result.php?url=https%3A%2F%2Fwww.sitepoint.com#.WtZSV5ch2Uk
https://developers.facebook.com/tools/debug/og/object/?q=http%3A%2F%2Fwww.sitepoint.com
https://search.google.com/test/mobile-friendly?id=AYqHM1soLAuHRRhfxqYzTg
https://developers.google.com/speed/pagespeed/insights/?url=http%3A%2F%2Fwww.sitepoint.com
https://testmysite.withgoogle.com/intl/en-gb
Just wondered what you use and which ones you pay most attention to.