WordPress is one of the most powerful blog platforms out there. One of its strength is the ability to allow post authors to assign custom fields to a post. This arbitrary extra information is known as meta-data and can be added using the Custom Fields box under the content editor of writing post screen. The problem is that adding these meta data handy is not a good idea for most users because they have to know what are the meta key and type of its value. It’s better when developers create a custom meta box that can show which information is needed and give some explanations to users. In this tutorial, we’ll see how to creating a better meta box in WordPress post editing page.