Wp Core Tools

<p>Speedix profiles PHP execution on your WordPress site, showing exactly which hooks and plugins are slow. Unlike page speed tests that just show load time, Speedix shows you <em>why</em> your site is slow.</p>
<p>Built for developers, agencies, and site administrators who need to diagnose performance issues at the code level.</p>
<h4>What It Does</h4>
<p>Measures every WordPress hook with microsecond precision and traces slow callbacks back to their source plugins using PHP Reflection. You get a clear breakdown of where time is spent: Core vs Theme vs Plugins.</p>
<p>The dashboard shows a health score (0-100), highlights the slowest hooks, and tracks performance trends over time. WooCommerce sites get a dedicated tab with categories for Checkout, Cart, Products, Orders, and more.</p>
<h4>Safe for Production</h4>
<ul>
<li>Sample rate control (10-100% of requests)</li>
<li>Threshold filtering to only log slow hooks</li>
<li>Overload protection auto-pauses if overhead spikes</li>
<li>Auto-cleanup from 1 hour to 7 days retention</li>
</ul>
<p>Quick presets let you switch between Safe Mode (10% sampling), Balanced, or Detailed profiling with one click.</p>
<h4>WooCommerce Support</h4>
<p>Works with HPOS (Custom Order Tables) and Cart/Checkout Blocks. Tracks checkout complexity: payment gateways, shipping methods, coupons, and session size.</p>
<h4>Export Options</h4>
<p>CSV, JSON, and Markdown exports for reporting and analysis.</p>
<h4>Why Not a Page Speed Test?</h4>
<p>GTmetrix and PageSpeed measure frontend delivery. Speedix measures server-side PHP execution. They answer different questions. Use both.</p>
<h4>Privacy</h4>
<p>All data stays in your WordPress database. No external API calls, no tracking, no telemetry. GDPR compliant by design.</p>
<h4>100% Free</h4>
<p>Every feature is included. No pro version, no upsells.</p>


Speedix

Pinpoint exactly which plugins and hooks slow your site. Real-time PHP profiling with visual dashboard, health scores, and zero guesswork.

Viktor Szépe

<h4>Only for development!</h4>
<h4>Now with OPcache memory consumption support</h4>
<p>This plugin dumps the colorized filenames and memory consumptions or file sizes after the normal WordPress HTML output, after the closing html tag. This generates invalid HTML but gives you an overview of loaded plugins and the current theme.</p>
<p><em>What’s running</em> lists all files parsed and executed by the PHP engine. It can be used for plugin or theme refactoring.</p>
<h4>Now you can highlight your own plugin and theme</h4>
<p>Provide a part of its path in wp-config.php:</p>
<pre><code>define( 'WHATS_RUNNING_HIGHLIGHT', 'wp-content/plugins/my-plugin' ); </code></pre>
<h4>Color codes</h4>
<ul>
<li>your code is highlighted with YELLOW background</li>
<li>plugin files are in BLUE</li>
<li>themes files are in ORANGE</li>
<li>files in the wp-includes directory are in GREEN</li>
<li>files in the wp-admin directory are in GREY</li>
<li>all other files are in RED</li>
<li>VIOLET bar after the filename represents the file size ( 0.5 kB/px )</li>
<li>DARK MAGENTA bar after the filename represents the OPcache memory consumption ( 1 kB/px )</li>
</ul>
<h4>Links</h4>
<p>You can watch <a href="https://core.trac.wordpress.org/ticket/28364" rel="nofollow ugc">WP core bug #28364</a> to get more information about <a href="https://github.com/szepeviktor/WPHW/blob/master/wp-entry-points.md" rel="nofollow ugc">WordPress entry points</a>.</p>
<p>You can find some documentaion here what makes a WordPress plugin efficient: https://github.com/szepeviktor/WPHW</p>
<p>Development of this plugin goes on on <a href="https://github.com/szepeviktor/whats-running" rel="nofollow ugc">GitHub</a>.</p>


What's running

Lists WordPress require() calls mainly for plugin code refactoring.

Speedix vs What's running