Forge12 Interactive GmbH

<p>F12 Profiler analyzes your WordPress site comprehensively and delivers concrete, prioritized recommendations to improve load times. The plugin combines server diagnostics, asset analysis, database optimization, and plugin impact assessment in a modern, clean interface.</p>
<h4>Features</h4>
<p><strong>Analysis & Diagnostics</strong></p>
<ul>
<li>Server analysis (PHP, MySQL, OPcache, web server, SSL, HTTP/2, compression)</li>
<li>Automatic site crawler with load time measurement (desktop & mobile)</li>
<li>Asset analysis (CSS, JS, images) with optimization potential</li>
<li>OPcache status & configuration recommendations</li>
<li>PHP profiler (runtime, queries, hooks, plugin ranking, culprit analysis)</li>
<li>Plugin impact analysis (assets, hooks, queries per plugin)</li>
<li>PageSpeed Insights integration (Lighthouse Scores + Core Web Vitals + CrUX)</li>
<li>Performance score with 6 weighted categories (A-F grades, trend delta)</li>
<li>Recommendation engine with automatic optimization suggestions</li>
</ul>
<p><strong>Optimization Tools</strong></p>
<ul>
<li>Lazy Loading (images and iframes)</li>
<li>Font Display Optimization (font-display: swap/optional/fallback/block)</li>
<li>Script Defer Manager (automatic defer for scripts with exclusion list)</li>
<li>Auto Image Dimensions (prevents Layout Shifts / CLS)</li>
<li>HTML Minification (whitespace, comments, empty attributes)</li>
<li>CSS/JS Minification (file-based cache)</li>
<li>WordPress Bloat Removal (emojis, embeds, Dashicons, jQuery Migrate, XML-RPC, Heartbeat, and more)</li>
<li>Browser Cache (.htaccess-based)</li>
<li>DNS Prefetch & Preconnect (domain detection from asset scan)</li>
<li>Database Analysis (8 categories with detail view)</li>
<li>Autoload Manager (granular wp_options management)</li>
<li>Background Asset Scanner with conflict detection</li>
<li>File-based Page Cache with TTL and URL exclusion <strong>(Pro)</strong></li>
<li>CSS/JS Asset Manager – disable, defer, async per page or globally <strong>(Pro)</strong></li>
<li>Conditional Loading – shortcode, block, regex, archive, login status, post type, plugin <strong>(Pro)</strong></li>
<li>Smart auto-suggestions with source-based plugin detection after full scan <strong>(Pro)</strong></li>
<li>Asset Preload Manager – Link headers for critical assets <strong>(Pro)</strong></li>
<li>Critical CSS Generator & Applier – above-the-fold CSS per template <strong>(Pro)</strong></li>
<li>Unused CSS Removal – per page template, safelist, regex safelist <strong>(Pro)</strong></li>
<li>WebP Image Conversion with batch queue and backup <strong>(Pro)</strong></li>
<li>LQIP Image Placeholders – 20px blur-up previews with IntersectionObserver <strong>(Pro)</strong></li>
<li>Preload Key Requests – LCP images, fonts, critical resources <strong>(Pro)</strong></li>
<li>Script Delay – delays third-party JS until first user interaction <strong>(Pro)</strong></li>
<li>Local Google Fonts – GDPR-compliant WOFF2 self-hosting <strong>(Pro)</strong></li>
<li>YouTube/Vimeo Facade – thumbnail + play button instead of iframe <strong>(Pro)</strong></li>
<li>Database Cleanup – one-click per category or bulk action <strong>(Pro)</strong></li>
<li>Redis Object Cache Management – drop-in installation/removal <strong>(Pro)</strong></li>
<li>Scheduled Crawls & Cleanups via WP-Cron <strong>(Pro)</strong></li>
<li>Performance Budgets with email/webhook notifications <strong>(Pro)</strong></li>
<li>Settings Import/Export as JSON <strong>(Pro)</strong></li>
<li>One-Click Optimizer – automated optimization with backup & restore <strong>(Pro)</strong></li>
<li>License Management with activation/deactivation <strong>(Pro)</strong></li>
</ul>
<p><strong>User Interface</strong></p>
<ul>
<li>Modern iOS-style design system</li>
<li>React 18 + TypeScript SPA</li>
<li>30+ pages/tools with dedicated configuration</li>
<li>Context-sensitive info sections on all pages</li>
<li>Pro features visible with lock icon and upgrade prompt</li>
</ul>
<p><a href="https://www.forge12.com/f12-profiler-pro/" rel="nofollow ugc">Get F12 Profiler Pro</a></p>
<h4>System Requirements</h4>
<ul>
<li>WordPress 6.0 or higher</li>
<li>PHP 8.0 or higher</li>
<li>MySQL 5.7 / MariaDB 10.3 or higher</li>
</ul>


F12 Profiler

Excellent! After P3 doesn’t work with PHP7+ anymore, F12 seems finally the one stepping in to fill that gap.

Update [18-Jun-19]. After some small contributions of mine to the dev efforts, the plugin developer has decided to add me to the team, long after this review was written.

Finally an alternative to P3

Comprehensive WordPress performance analysis with crawling, load time measurement, server diagnostics, and integrated optimization tools. Free.

Viktor Szépe

<p>Toggles human and machine language (aka ID-s) on admin pages.</p>
<h4>Only for development!</h4>
<p>This plugin shows you the ID-s of almost all form fields including selects, checkboxes and radio buttons like in <code>wp-admin/options.php</code>.</p>
<p>It works only on WordPress Settings API-like formatted — not necessarily API generated — admin pages. E.g. <code><input></code> elements cannot be wrapped in <code><span></code>.</p>
<h4>Activation</h4>
<p>You can find the plugin’s checkbox in standard Screen Options (upper right corner). This checkbox could be overwritten — thus hidden — by poorly written plugins. To restrict Machine Language to a certain admin page, copy this to your <code>wp-config.php</code>:</p>
<pre><code>define( 'MACHINE_LANGUAGE_HOOK', 'load-options-reading.php' ); </code></pre>
<p>For example this line causes to run only on Settings / Reading.</p>
<h4>Features</h4>
<ul>
<li>Basically all input ID-s are displayed in place of labels, actually <code>for</code> attributes of labels</li>
<li><code>select</code>-s get a title showing all option values comma separated (hover over <code>select</code>-s with your mouse)</li>
<li><code>option</code>-s get values appended in the form of “original option text|value”</li>
<li>Radio button labels will show: “name|value”</li>
<li>Descriptions (<code>p</code>-s and <code>span</code>-s with “description” class) will be hidden, this way Machine Language will clean up all admin pages, descriptions are hidden by CSS, so there’s no <a href="http://en.wikipedia.org/wiki/Flash_of_unstyled_content" rel="nofollow ugc">FOUC</a></li>
</ul>
<h4>Other notes</h4>
<ul>
<li>Radio buttons or checkboxes with empty value are displayed with the “Empty Set” Unicode character: “? ” (U+2205) ( e.g. Settings / Permalinks / Default )</li>
<li><code>select</code>-s with empty values are not</li>
<li>The plugin’s checkbox in Screen Options is effective immediately</li>
<li>The code is designed as a must use plugin, so there is no separated Javascript or CSS file</li>
<li>State of Machine Language is saved as a user option so it is a per user setting</li>
</ul>
<h4>Links</h4>
<p>Development goes on on <a href="https://github.com/szepeviktor/machine-language" rel="nofollow ugc">GitHub</a>.</p>


F12 Profiler vs Machine Language