Investigate WordPress performance in PHP

Code Profiler Pro measures the PHP code WordPress runs on your server. Its charts and tables show performance by add-on and theme, then help you trace a slow workflow to the scripts, classes, methods, or functions involved. This server-side view complements browser-based page speed checks, which measure rendered pages from the user’s perspective.

Choose a request and inspect its activity

Profile the WordPress frontend or backend, a cron event, or a custom URL. GET and POST methods, custom cookies, and HTTP headers let you examine requests such as contact form submissions, checkout processes, and AJAX actions. Filters help narrow the results to the activity relevant to your investigation.

• Profile plugin and theme performance.
• In Pro, inspect PHP scripts, methods, functions, and database query performance.
• In Pro, monitor remote connections.
• Review file I/O operations and statistics, plus disk I/O usage.

Review and export profile results

Charts present performance information visually, and tables provide detailed results. Export charts as PNG images. Pro also exports tables and charts in CSV format. WP-CLI integration lets you execute the profiler from the command line.

Installation and requirements

Upload the plugin ZIP through WordPress under Plugins > Add New, activate it, then open the Code Profiler menu and select the area or workflow to profile. The stated requirements are WordPress 5.0 or later and PHP 7.1 or later.

Code Profiler works with multisite installations; only the superadmin can run it. The product information states that it does not collect private data from you or your users and does not use cookies. It can remain active when you are not profiling without affecting website performance, according to the product information. Consider running a profile after plugin or theme updates to review any performance changes.