Quicktags in WordPress is the buttons located above the post editor that allows users to format their text without using any HTML code. They provide a simple and user-friendly way of formatting content, making it easy for users to add headings, bold and italicize text, create lists, and more.
Quicktags are customizable and can be added or removed based on the user’s preference. They also support custom formatting options, such as inserting specific code snippets or custom HTML.
WordPress supports several default quicktags, but developers can add their own custom quicktags using the Quicktags API. The API allows developers to add new buttons, remove existing ones, or modify the functionality of the default quicktags. This makes it possible to create custom formatting options that are tailored to the specific needs of a website or application.