This article is going to to be a DIY (Do it yourself) tutorial. As you have reached this page, I am going to think that you want to know how to increase WordPress Memory Limit. Though there are several solutions on how to do it correctly, I am going to show you the easiest and best method to do this.
On the root directory of your domain, you will find a file named wp-config.php
Download that file and copy it in two different folders (for safety purposes). Open any one of this with a text or code editor. I will prefer Notepad++ for this.
Just after the opening <?php line add this line. (see attachment below) and then delete the previous file and upload the edited one.
define ('WP_MEMORY_LIMIT', '256M');
Here, I have increased the limit to 256M. You should set this value as per your need.
You are done! ✌
If you have further questions in mind, please comment below. And never forget if it helps, it deserves a share. 😉