Inspect the Main Query and Its SQL
Lets administrators add ?wpide_query=1 to a front-end URL to print the main query's variables, the SQL it ran and the number of posts found at the bottom of the page.
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.
List Every Database Query on a Page for Administrators
When SAVEQUERIES is enabled, lets administrators add ?wpide_queries=1 to a front-end URL to see every SQL query of the page with its time and calling function, slowest first.
List Every Hook Fired on a Page
Lets administrators add ?wpide_hooks=1 to any front-end URL to see, at the bottom of the page, every action and filter that ran and how many times, in firing order.
Query Count and Load Time in the Page Source
Adds an HTML comment at the bottom of front-end and admin pages with the number of database queries, generation time and peak memory. Visible to administrators only.
REST API Link for the Current Item in the Admin Bar
Adds a "REST" link to the front-end admin bar for administrators that opens the JSON for the post, page, term or author being viewed, which speeds up headless and integration work.
Show Which Conditional Tags Are True in the Admin Bar
Adds a "Conditionals" menu to the front-end admin bar for administrators listing which template conditions are true on the current page, such as is_singular(), is_archive() or is_front_page().
Show the Template Parts Used on a Page
Adds a "Template parts" menu to the front-end admin bar for administrators listing every template part loaded on the page, for both classic themes (get_template_part) and block themes.
Site Settings Object for Your Front-End Scripts
Prints a small window.siteSettings object with the home URL, REST API root, AJAX URL, language and, for logged-in users, a REST nonce, so your custom JavaScript never hard-codes addresses.