I am trying to work out if there is a way to link to a Tumblr blog over HTTPS/SSL.
When I link to my blog with HTTPS I can't access it, but it works under HTTP.
I came across this post on TechCrunch from Feb 2014, which suggests that there is a config setting to turn it on, but it would appear this no longer exists.
According to Tumblr, the feature has been in testing for “weeks” now, and today is available in Tumblr’s settings. To enable it, users have to go to their Tumblr dashboard’s Account Settings, then toggle the switch, so to speak.
SSL on blogs is now available! This post from Tumblr support has the deets.
Basically, you can go into settings -> your blog and there should be an option to turn it on: