WordPress Developer Blog

Tag: Extending WordPress

How to extend WordPress via the SlotFill system

By Ryan Welcher

November 18, 2022

Advanced, Concepts, Plugins

In WordPress 5.0, the WordPress SlotFill system was introduced as part of the Gutenberg project and is the extension paradigm that allows developers to extend the UIs introduced with the Gutenberg project such as the Post Editor and the Site Editor.

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