What are the wordpress shortcodes?
WordPress shortcodes are small snippets of code that allow you to do various things with little effort. They were introduced in WordPress 2.5 and were introduced to allow people to execute code in WordPress posts, pages and widgets without writing code directly.
This allows you to embed files or create objects that usually require a lot of code in a single line. For example, a short code for embedding a password generator might look like this:
[password_generator]
Live demo below and in the demo widget.