mangcodingdev

OnPage Speed Checker helps you monitor content performance without leaving wp-admin.
This plugin provides:
<ul>
<li>Homepage performance snapshot for Mobile and Desktop.</li>
<li>Content performance table for published pages and posts.</li>
<li>One-click audit action from dashboard rows.</li>
<li>Detailed modal view with score breakdown, Core Web Vitals, and recommendations.</li>
<li>Single URL report export from detail modal with CSV and PDF options.</li>
<li>Settings page to control content scope, table results per page, and timeout.</li>
<li>Stored latest snapshot results for faster dashboard review.</li>
</ul>
Important behavior:
<ul>
<li>Homepage is treated as primary and shown in the top summary section.</li>
<li>Front page entries are excluded from the content list table to avoid duplication.</li>
<li>API key is configured and verified directly from plugin settings.</li>
<li>Dashboard audit actions are disabled until API key verification is successful.</li>
</ul>
<h3>External Services</h3>
This plugin connects to a third-party service:
<ul>
<li>Service name: Google PageSpeed Insights API</li>
<li>Service URL: https://pagespeedonline.googleapis.com/pagespeedonline/v5/runPagespeed</li>
<li>Trigger: Only when an administrator runs an audit from the plugin dashboard.</li>
<li>Data sent: The audited page URL and selected strategy (<code>mobile</code> or <code>desktop</code>).</li>
<li>Purpose: Retrieve Lighthouse/PageSpeed performance results for the target URL.</li>
<li>Service privacy policy: https://policies.google.com/privacy</li>
<li>Service terms: https://policies.google.com/terms</li>
</ul>

OnPage Speed Checker

Check PageSpeed Insights performance for homepage, pages, and posts directly from your WordPress dashboard.

Easy Critical CSS

Seth Alling

Easy Critical CSS is a lightweight WordPress plugin that lets you add Critical CSS to any page on your site to improve loading speed and performance.
Features: 
– Easily add Critical CSS and Secondary CSS to any page 
– Secondary CSS removes unused CSS rules and stylesheets, ensuring only a single optimized CSS file loads 
– Supports posts, pages, archives, and taxonomy pages 
– Fully compatible with caching plugins (WP Rocket, W3 Total Cache, WP Super Cache, etc.) 
– Customizable settings for individual pages 
– Stores Critical CSS in your choice of the database or as static files 
– Optional API service (API key required) for automated Critical and Secondary CSS generation via <a href="https://criticalcss.net/" rel="nofollow ugc">CriticalCSS.net</a> 
– Background processing to generate CSS without blocking page loads or admin actions
<h3>Why Use Critical CSS?</h3>
Critical CSS ensures above-the-fold content loads first by reducing render-blocking CSS. This helps you boost Core Web Vitals, improve page speed scores, and deliver a better experience to your visitors.
Want to try it out first? You can generate free one-off Critical CSS at <a href="https://criticalcss.net/#free-generator" rel="nofollow ugc">CriticalCSS.net</a> and manually apply it to your site using the plugin settings.
<h3>External services</h3>
This plugin interacts with external third-party services in order to provide its functionality. Below is a detailed breakdown of these interactions:
<ol>
<li>
Critical CSS API (api.criticalcss.net) 
This service generates critical and secondary CSS used to optimize your site’s CSS delivery and improve page load times.
<ul>
<li>Data Sent: The URL, CSS generation preferences, generation status, and HTML content of pages from your website.</li>
<li>When: Data is transmitted only if you have explicitly enabled the Auto generation mode, and occurs whenever Critical CSS or Secondary CSS needs to be generated or regenerated.</li>
<li>Links: <a href="https://criticalcss.net/terms/" rel="nofollow ugc">Terms of Service</a>, <a href="https://criticalcss.net/privacy/" rel="nofollow ugc">Privacy Policy</a>.</li>
</ul>
</li>
<li>
Cloudflare API (api.cloudflare.com) 
This service is used to automatically clear your Cloudflare cache after new critical CSS is generated, ensuring your visitors see updated styles immediately.
<ul>
<li>Data Sent: Authentication credentials (Cloudflare email, API key, and zone ID) and instructions for purging the cache.</li>
<li>When: Data is sent only if <code>CLOUDFLARE_EMAIL</code>, <code>CLOUDFLARE_API_KEY</code>, and <code>CLOUDFLARE_ZONE_ID</code> are defined in your site’s configuration.</li>
<li>Links: <a href="https://www.cloudflare.com/terms/" rel="nofollow ugc">Terms of Service</a>, <a href="https://www.cloudflare.com/privacypolicy/" rel="nofollow ugc">Privacy Policy</a>.</li>
</ul>
</li>
<li>
Kinsta Cache Clear (localhost) 
If your site is hosted on Kinsta, this plugin can trigger a cache clear after generating new critical CSS, ensuring immediate availability of updated styles.
<ul>
<li>Data Sent: A cache-clear request to your site’s local server endpoint provided by Kinsta. No sensitive or identifying information is transmitted beyond the local environment.</li>
<li>When: Data is sent only when your site detects that it’s running on Kinsta infrastructure (<code>KINSTA_CACHE_ZONE</code> environment variable is present).</li>
<li>Links: <a href="https://kinsta.com/legal/terms-service/" rel="nofollow ugc">Kinsta Terms of Service</a>, <a href="https://kinsta.com/legal/privacy-policy/" rel="nofollow ugc">Kinsta Privacy Policy</a>.</li>
</ul>
</li>
<li>
Freemius API (api.freemius.com and wp.freemius.com) 
Used to manage licensing, validate API keys, and handle plugin updates and account management.
<ul>
<li>Data Sent: Freemius sends and receives licensing information and plugin activation status, including your site’s URL, plugin version, API key, and licensing details.</li>
<li>When: Data is transmitted only after explicitly opting in through the plugin’s settings page or upon activation of a purchased API key. By default, the plugin does not send any data to Freemius until you explicitly opt in.</li>
<li>Links: <a href="https://freemius.com/terms/" rel="nofollow ugc">Freemius Terms of Service</a>, <a href="https://freemius.com/privacy/" rel="nofollow ugc">Freemius Privacy Policy</a>.</li>
</ul>
</li>
</ol>

Easily inject Critical CSS and Secondary CSS (with unused CSS styles removed) to improve site speed and performance.

OnPage Speed Checker vs Easy Critical CSS