Find and Delete Unused Tags and Categories (WP-CLI)
Adds a "wp empty-terms" command that lists the terms of a taxonomy that no post uses, and deletes them when you add --delete. The default category is always kept.
Snippet Library
Developer snippets for WordPress
Snippets for developers: debugging helpers, custom cron schedules, body classes, REST API tweaks and admin tools for checking hooks and queries. Building blocks for people who write code for WordPress every day.