If you want to check out the number of public likes your post has received on Tumblr, you're going to have to do a little leg work. You are first going to have to register an application for an OAuth key, which is a key that gives access to private resources on your site. This will provide you with an API key, which you can then use to count your Tumblr likes.

Number of Likes

Check your number of likes using the API Console (see link in Resources). Activate your API key and use the following URI method to find out how many likes you have:

api.tumblr.com/v2/blog/{base-hostname}/likes?api_key={key}

Where you see base-hostname in the code, replace it with your blog's name. For example, if you have a standard blog and your blog's URL is http://fixyourzipper.tumblr.com/ then your base hostname is fixyourzipper.