Https - Part 2: Http to Https Conversion Checklist

Googlebot Test
Use 'fetch as Google' in Google's Search Console to ensure that pages can be accessed and the pages render correctly.

External Scripts/Widgets
Check any social media widgets are using the https variant (if this is the case the taskbar shouldn't be green/marked as 'Secure Site')

301 Redirects
Check 301 redirects (from http://*domain* to https://*domain* are working using httpstatus.io

Sitemaps
Check the xml sitemap and also the robots.txt where the sitemap location is defined.

Analytics
Ensure analytics is working correctly on the https variant. You can do this by using the real time data.

SEMRush
Update SEMRush to use the new https URL.

Crawl Site
Xenu scan - sort by address and identify any http://*domain* links (fix these)