There is regular discussion within the WordPress user community on certain common encounters developers have when creating themes and plugins. One such discussion is around post thumbnails 1 and, more specifically, how to specify a default thumbnail. After reading a few discussions around this, I thought I’d share my take on things.
There are a myriad of methods to achieve this. Some developers do conditional checks in their code to see if an entry has an image assigned to it. This is the most common method of applying a default thumbnail. If the entry doesn’t have a thumbnail, display a default image. That’s pretty straight forward. That being said, this method requires extra logic on the frontend of your website, which may not always be clean/necessary.