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.
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REST API Error Log Under Tools
Records REST API requests that fail with a 4xx or 5xx status, with the route, method, user and error code, and lists the latest 100 under Tools > REST Errors for debugging integrations.
Read-Only Custom Fields Viewer for Administrators
Adds a box to the post editor that lists every custom field stored for the post, hidden ones included, with serialized arrays and JSON shown in a readable layout. Nothing can be changed from it.
Readable Variable Dump for Administrators
Adds a wpide_dump() helper that shows any variable in a readable, collapsible box only to administrators, so debug output never reaches visitors even if you forget to remove it.
Registered Image Sizes Under Tools
Adds a Tools > Image Sizes screen listing every image size WordPress creates on upload, with its width, height and crop mode, so you can see what themes and plugins have added.
Rewrite Rules Viewer and URL Tester
Adds Tools > Rewrite Rules, listing every rewrite rule and showing which rule and query a URL path you enter would match, for debugging 404s and custom permalinks.
Scheduled Cron Events Viewer
Adds a Tools > Cron Events screen listing every scheduled WP-Cron event with its next run time, recurrence and hook name, to debug missed or duplicate tasks.
Searchable Options Viewer Under Tools
Adds a Tools > Options Viewer screen where administrators can search the options table by name and see each value decoded and pretty-printed, including serialized arrays that Settings > All hides.
Send PHP Values to the Browser Console
Adds a wpide_console() helper that prints any PHP variable to the browser's developer console for administrators, so you can inspect data without breaking the page layout.
Server-Timing Header for Administrators
Adds a Server-Timing header with PHP time, database query count and peak memory to pages viewed by administrators, so you can read the numbers in your browser's developer tools Network tab.
Show Outgoing HTTP Requests in the Admin Bar
Counts the external HTTP requests WordPress, plugins and themes make while building a page, and lists each URL, status and time in an admin bar menu for administrators.
Show PHP Errors to Administrators With ?debug=1
Lets administrators see PHP warnings and notices on screen by adding ?wpide_debug=1 to any address, while visitors and other users never see them, even with WP_DEBUG_DISPLAY off.
Show PHP Version, Memory and Queries in the Admin Footer
Replaces the WordPress version in the bottom right of admin screens with the PHP version, peak memory use and database query count of the current page.
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 Which Functions Run on a Hook
Lets administrators add ?wpide_hook=the_content (or any hook name) to a URL and see the callbacks attached to that hook with their priorities and source files, printed at the bottom of the page.
Show a User's Capabilities on Their Profile
Adds a collapsible list of everything a user is allowed to do to the user edit screen, which helps when checking what a role or plugin has granted.
Show the Admin Screen ID in the Footer
Displays the current screen ID, base, post type and hook suffix in the admin footer for administrators, which is exactly what you need when targeting a screen in your own code.
Show the Current Template in the Admin Bar
Displays the theme template file (and block template, on block themes) used for the current page in the admin bar, for administrators only.
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.
Silence "Translation Loading Triggered Too Early" Notices
Hides the "_load_textdomain_just_in_time was called incorrectly" debug notice (added in WordPress 6.7) for plugins you cannot fix yourself, keeping debug logs readable.
Site Health Check for Publicly Exposed Sensitive Files
Adds a Site Health test that checks whether files such as .env, debug.log, .git/HEAD and wp-config.php backups can be downloaded from your site by anyone, and flags them as critical.
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.
Stop Automatic Update Debug Emails
Stops the long technical "background update" debug emails WordPress sends after automatic updates on development, beta and nightly versions.
Transients Viewer Under Tools
Adds a Tools > Transients screen listing the cached transients stored in the database with their size and expiry time, and lets administrators delete a single one to force a refresh.