List Enqueued Scripts and Styles in the Page Source
Prints an HTML comment at the bottom of each page, visible to administrators, listing every script and stylesheet handle loaded and its source, to find what to optimize.
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.
Mark Each Block in the Page Source for Administrators
Wraps every rendered block in HTML comments with its name, such as core/group or a plugin's block, when an administrator views a page with ?wpide_blocks=1, to see which block produced which markup.
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.
Slow Database Query Warning for Admins
When SAVEQUERIES is enabled, lists the slowest database queries of the page with their duration and caller in an HTML comment visible to administrators.