Can Some one help me please ?

I am using Horcrux theme for my wordpress site !! By my featured images are not displaying on my home page How can I fix this issue ? And how to know whether host supports GD library or not ?

Well, sometimes it might just be some problem with your settings, but if you think GD Library is the issue, then you can check if your host supports it by just simply creating a .php file and put it somewhere into your public directory with the following code:

Code:

<?php
      phpinfo();
?>

Then save it as anythingyouwant.php, and go to that file's location at your site.
After that you'll see a page with information about the PHP installation on your web server, so just hit CTRL+F to search for something on that page and type "GD".
If nothing turns up then GD library isn't installed, if you see GD Library or something like that, then it's installed.

Check the directories as well!

If your images are listed as part of the same directory but are located in a sub-directory, that may another problem. Also, make sure your GD Library is listed under your php.ini