Collect Real Core Web Vitals From Your Visitors
Measures Largest Contentful Paint, Cumulative Layout Shift and Interaction to Next Paint in visitors' browsers and shows the 75th percentile of the last 7 days per page type in a dashboard widget.
Snippet Library
Performance snippets for WordPress
Snippets that make WordPress lighter and faster: remove emoji scripts and embeds, control the Heartbeat API, limit revisions and load scripts only where they are needed. For developers and site owners chasing better Core Web Vitals.
Find What Is Calling admin-ajax.php
Counts admin-ajax.php requests per action (and whether they come from the front end or the dashboard) for the current day and the previous six, and shows the busiest ones under Tools > AJAX Usage.
Log Pages That Run Too Many Database Queries
Records front-end URLs that run more database queries than a limit you set, with the query count and load time, and lists the worst offenders under Tools > Heavy Pages.
Log Scheduled Tasks That Take Too Long
Measures how long each scheduled task (cron event) takes to run and records the slow ones under Tools > Slow Cron Tasks, so you can spot the plugin that makes WP-Cron sluggish.
Log Slow Outgoing HTTP Requests
Times every request your site makes to other servers (update checks, APIs, license servers) and records the ones slower than a second under Tools > Slow HTTP Calls, so you can find what is holding up page loads.
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.