What Is a Shortcode and How Its Work? A shortcode is a short piece of code, not the full codes. Usually, you will find many plugins like slider, pdf embedder, contact form 7, even Instagram feed so there has no extra option to add directly their content feature/function appear on the frontend of your WordPress website specific page /post/widgets so on. for that, all of these types of the plugin provides a shortcode for adding their feature/function appear on the frontend the sort code usually looks like [instaid6554], or, something like this, Even, every page builder/theme has permission to add shortcodes for adding a particular feature to appear on your website. The reason we use shortcodes to make it super easy for us. Instead of configuring the full piece of code.