Please provide a link to a page on your site where we can see this. Thanks.
It doesn’t show up on the page itself. It shows up whenever I run a tester.
https://www.webpagetest.org
And then I tell it to test https://www.stfinian.com and that’s where I keep seeing sharethis references. I am starting to think that it is actually something to do with HostGator. I can’t find any references to sharethis in my plugins list or in the files on my server.
If find these lines in your page source
<link rel='dns-prefetch' href='//platform-api.sharethis.com' />
<script type='text/javascript' src='//platform-api.sharethis.com/js/sharethis.js#product=ga'></script>
Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.
If you can install plugins, install “Health Check”: https://wordpress.org/plugins/health-check/ On the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site. You can then use its admin bar menu to turn on/off plugins and themes one at a time. If you do this, then just view the source of your site (right click, select view source) and press CTRL+F to search for “share”.
Alright. WHere in the source would I find those lines? And couldn’t I just delete them?
No, you’re only viewing the page source. The troubleshooting method I outlined will help you find what’s putting them there.
Is it possible that it is something my host is putting there that I have no control over?
Probably not. It’s most likely your theme, but maybe a plugin.