Danila Vershinin

Cacheability improves your website loading time by making it a well-behaved HTTP citizen.
<h3>Plugin Features</h3>
<h4>Conditional HTTP GET</h4>
Cacheability adds conditional HTTP GET feature for WordPress posts. A repeat request to a post which wasn’t modified, will result in a 304 HTTP response. It quickly tells the browser: “nothing new here” without sending the whole post all over again. This saves the bandwidth and increases performance on both ends.
<h4>Fixes soft 404 errors</h4>
WordPress emits soft 404s on empty search results or an invalid tag page, e.g., either <code>/?s=foo</code> or <code>/tag/bar</code> will always result in the HTTP 200 status code, irrespective of whether any entries were displayed there. Soft 404s are bad for you! Cacheability eliminates them by setting the proper 404 HTTP status upon empty search results or tags.
This improves your SEO ranking.
<h4>Warming cache for updated content</h4>
Every time you edit a WordPress post, your cache is cleared in many places. The post page is cleared, the homepage is cleared, the category, feeds, etc., etc. You edited just a single post or page, but your cache is cleared in many places!
This is cool because you don’t want stale content on your website. But it’s not cool to make your next visitors face slow pages!
Cacheability automatically warms up the pages which were purged from cache:
<ul>
<li>It warms up purged caches as soon as you edit your content, via cron</li>
<li>It warms up both Gzip and Brotli versions of cleared pages</li>
</ul>
All this allows for more happy visitors that hit your cache, and not slow backend!.
This feature requires <a href="https://wordpress.org/plugins/varnish-http-purge/" rel="ugc">Proxy Cache Purge</a> plugin. 
Also, ensure WordPress cron is configured correctly.

Cacheability

Cacheability improves your website loading time by making it a well-behaved HTTP citizen.

Arya Dhiratara

A ‘Do It Yourself’ WordPress Page Speed Optimization Pack.
Optimizing web pages is really just about controlling how assets are delivered.
Optimize your site further. Load faster on GTmetrix, Get better scores on Google Page Speed Insight.
Control your CSS & JavaScripts Delivery: Load CSS Asynchronously, Delay CSS & JavaScript until User Interaction, Remove Unused CSS & JavaScript Files, Preload Critical CSS & JavaScript, Defer JavaScripts, and more.
You can choose each CSS & JavaScripts individually and what type of execution is required per each post types.
This plugin inspired by the mighty <a href="https://wordpress.org/plugins/flying-scripts/" rel="ugc">Flying Scripts</a> from Gijo Varghese. Using HTML Dom Parser to manipulate your page’s HTML, so we can simply use the keyword of the assets to target them.
<h3>Main Features</h3>
<ul>
<li>
Load CSS Asynchronously — load any CSS file(s) asynchronously on selected post/page types.
</li>
<li>
Delay CSS and JavaScripts until User Interaction — delay any CSS/JavaScripts load until user interaction on selected post/page types. 
Note:
<ul>
<li>By default, the delay JavaScripts and CSS features are configured to user interaction based. You can change that using filter.</li>
<li>If you prefer to use ‘exclusions’, you can simply delay all JavaScripts using “<code>.js</code>” keywords, and use provided filter to exclude specific JavaScripts.</li>
</ul>
</li>
<li>
Defer JavaScripts — defer loading any JavaScript file(s) on selected post/page types.
</li>
<li>
Advance Defer JavaScripts — hold any JavaScript file(s) load until everything else has been loaded. Adapted from the legendary varvy’s defer JavaScripts method *recommended for defer loading 3rd party scripts like ads, pixels, and trackers
</li>
<li>
Preload Critical CSS, JavaScripts, and Font Files — preload any critical CSS/JavaScript/Font file(s) on selected post/page types.
</li>
<li>
Inline CSS and JavaScript Files — inline any critical CSS/JavaScript file(s) on selected post/page types. *warning: Inlining multiple / large files might slow down your site’s performance. Enabling this without using a caching system is generally not recommended.
</li>
<li>
Remove Unused CSS and JavaScripts Files — remove any unused CSS/JavaScripts file(s) on selected post/page types.
</li>
</ul>
Use case:
<ul>
<li>Have CSS files that are only be used in the below the fold area? Delay them.</li>
<li>Have JavaScripts files that are not required in initial page rendering? Delay them.</li>
<li>Have CSS files that are used in the above the fold area? Preload them.</li>
<li>Have JavaScripts files such as jQuery that are needed to be load since the beginning? Preload them.</li>
<li>Have CSS files that are critical for above the fold area? Inline them.</li>
<li>Need to remove “Eliminate Render Blocking Resources” warnings on Google Page Speed Insights? Async, Defer, Inline, or Preload them.</li>
</ul>
<h3>Other Features</h3>
<ul>
<li>
Load Gutenberg CSS conditionally — This feature will make the combined CSS (wp-block-library) removed and your page will only load the CSS of each block that you use on the page (and only if you use one of the core blocks!). Each CSS of the core blocks will only get enqueued when the block gets rendered on a page. This will save you from worrying if you still need to use the native Gutenberg core blocks in some of your pages. 
Note: the inline “global-styles” will also only load if you use one of the core blocks when you combine this feature with the Remove FSE Global Styles feature.
</li>
<li>
Remove FSE Global Styles — Remove WP “global-styles-inline-css”. Note: this will still conditionally loaded if you enable Load Gutenberg CSS conditionally feature.
</li>
<li>
Remove SVG Duotone Filter.
</li>
<li>
Filter Google Fonts — Filter the Google Font Characters to use most common characters only. In most font families, this will significantly reduce the font file size. *remember to use the web-safe font that is most similar to the font you are using as the font family fallback or you can simply modify the default character using the provided filter.
</li>
<li>
Combined Google Fonts — Combine google fonts css into one single line *only works for google font url(s) that are using the latest Google Font API (css2).
</li>
<li>
Select Font Display — Choose the best google fonts’ font-display strategy for your website.
</li>
<li>
Remove Passive Listener Warnings — Remove the “Does not use passive listeners to improve scrolling performance” warning on Google PageSpeed Insights
</li>
<li>
Prefetch Pages — Prefetch in view links so visitors can switch pages (more) instantly. *based on Gijo’s <a href="https://wordpress.org/plugins/flying-pages/" rel="ugc">Flying Pages</a>
</li>
<li>
Optimize WC Cart Fragments — Disable WC Cart Fragments, only when it’s empty. *based on Optimocha’s (Barış Ünver) <a href="https://wordpress.org/plugins/disable-cart-fragments/" rel="ugc">Disable Cart Fragments</a>
</li>
<li>
Remove WooCommerce Blocks CSS.
</li>
<li>
Disable jQuery Migrate.
</li>
<li>
Disable WP Embeds.
</li>
<li>
Disable WP Emojis.
</li>
<li>
Lazyload, Preload, and More — Add Lazyload, Preload, and More features. This is a non JavaScript version of <a href="https://wordpress.org/plugins/lazyload-preload-and-more/" rel="ugc">Lazyload, preload, and more</a>. *lazyload applied for images/iframes tag only. if you need to lazyload css background images, use the <a href="https://wordpress.org/plugins/lazyload-preload-and-more/" rel="ugc">Lazyload, preload, and more</a> plugin instead.
<ul>
<li>Control your images and iframes delivery</li>
<li>Automatically preload featured images</li>
<li>Add images dimensions (also able to add SVG images dimensions)</li>
</ul>
</li>
</ul>
  
A simple tutorial of how to use this plugin: <a href="https://dhiratara.me/how-to/use-optimize-more/" rel="nofollow ugc">How to use Optmize More Plugin</a> (Indonesian Version: <a href="https://thinkdigital.co.id/wordpress/plugin/optimize-more/" rel="nofollow ugc">Cara mempercepat loading WordPress dengan plugin Optimize More</a>).
Big thanks to Gijo Varghese, without his codes in Flying Scripts, I can never be able to build this plugin. Thanks Gijo! 🙂
<h3>Credits</h3>
<ul>
<li>Gijo Varghese for his codes in Flying Scripts and Flying Pages</li>
<li>Barış Ünver for his codes in Disable Cart Fragments</li>
</ul>
<h3>Disclaimer</h3>
<ul>
<li>
This plugin should works well with any caching plugins.
</li>
<li>
This plugin only adds 1 extra row to your database. And it will self delete upon uninstallation.
</li>
<li>
I built this plugin to optimize my Clients’ site. And I can get a very good scores even before activating my caching plugin.
</li>
</ul>
<h3>Available Filters</h3>
<h3>To change the delay configuration:</h3>
By default, the delay JavaScripts and CSS are configured to user interaction based. But you can change that using filter:
For delay CSS, e.g.:
<pre><code>add_filter( 'om_delay_css_time', function($om_delay_css_time) {
 return '3*1000';
} );
</code></pre>
For delay JavaScripts, e.g.:
<pre><code>add_filter( 'om_delay_css_time', function($om_delay_css_time) {
 return '3*1000';
} );
</code></pre>
or if you want to change it for specific page only:
For delay CSS, e.g.:
<pre><code>add_filter( 'om_delay_css_time', function($om_delay_css_time) {
 if (is_front_page()) {
 return '3*1000';
 }
 else {
 return $om_delay_css_time;
 }
} );
</code></pre>
For delay JavaScripts e.g.:
<pre><code>add_filter( 'om_delay_js_time', function($om_delay_js_time) {
 if (is_front_page()) {
 return '3*1000';
 }
 else {
 return $om_delay_js_time;
 }
} );
</code></pre>
<h3>To use Exclusions instead of Inclusions</h3>
If you prefer to use ‘exclusions’ method, simply delay all JavaScript files using “<code>.js</code>” keyword, and use the provided filters to exclude specific JavaScript files:
Example filter to add exclude list for the whole site (general):
<pre><code>add_filter('delay_js_exclude_list_default', function($exclusion_list) {
 $exclusion_list[] = 'jquery-core';
 $exclusion_list[] = 'js-cookie';
 $exclusion_list[] = 'wc-add-to-cart-js';
 return $exclusion_list;
});
</code></pre>
Example filter to add exclude list for Homepage option:
<pre><code>add_filter('delay_js_exclude_list_front_page', function($exclusion_list) {
 $exclusion_list[] = 'jquery';
 $exclusion_list[] = 'custom-js';
 return $exclusion_list;
});
</code></pre>
Example filter to add exclude list for Custom Page option:
<pre><code>add_filter('delay_js_exclude_list_pages', function($exclusion_list) {
 $exclusion_list[] = 'jquery';
 $exclusion_list[] = 'another-js';
 return $exclusion_list;
});
</code></pre>
Example filter to add exclude list for Archives option:
<pre><code>add_filter('delay_js_exclude_list_archives', function($exclusion_list) {
 $exclusion_list[] = 'jquery';
 $exclusion_list[] = 'another-js';
 return $exclusion_list;
});
</code></pre>
Example filter to add exclude list for Singular option:
<pre><code>add_filter('delay_js_exclude_list_singular', function($exclusion_list) {
 $exclusion_list[] = 'jquery';
 $exclusion_list[] = 'another-js';
 return $exclusion_list;
});
</code></pre>
Example filter to add exclude list for WooCommerce Products option:
<pre><code>add_filter('delay_js_exclude_list_wc_product', function($exclusion_list) {
 $exclusion_list[] = 'jquery';
 $exclusion_list[] = 'another-js';
 return $exclusion_list;
});
</code></pre>
Example filter to add exclude list for WooCommerce Archives option:
<pre><code>add_filter('delay_js_exclude_list_wc_archives', function($exclusion_list) {
 $exclusion_list[] = 'jquery';
 $exclusion_list[] = 'another-js';
 return $exclusion_list;
});
</code></pre>
<h3>To modify the Filter Google Font Characters</h3>
By default, this feature filtered the Google Font Characters to only use:
<pre><code>1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz%20!&"#$%\'()*+,-./:;<=>?@[\\]^_`{|}~%26≤≥±√$€£¥•©®™
</code></pre>
You can modify the characters using this filter:
Example filter to add some extra characters:
<pre><code>add_filter('font_characters', function ($fontCharacters) {
 // Modify the characters as needed
 $fontCharacters .= 'éèêñ';
 return $fontCharacters;
});
</code></pre>
Example filter to fully use your preferred characters:
<pre><code>add_filter('font_characters', function ($fontCharacters) {
 // Modify the characters as needed
 $fontCharacters = '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz%20!"#$%\'()*+,-./:;';
 return $fontCharacters;
});
</code></pre>
*note the ‘dot’ difference
<h3>Lazy Load, Preload, and more filters</h3>
Example filter to add extra lazyload exclude list:
<pre><code>add_filter( 'opm_exclude_lazy_class', function($opm_exclude_lazy_class) {
 return array( 
 'my-logo', 'my-hero-img', 'exclude-lazy'
 );
} );
</code></pre>
Example filter to change the image sizes for preload featured image:
<pre><code>add_filter( 'opm_featured_image_size', function($image_size, $post) {
 if ( is_singular( 'post' ) ) { return 'large'; }
 elseif ( is_singular( 'product' ) ) { return 'full'; }
 else { return $image_size; }
}, 10, 2 );
</code></pre>
 
<h3>Need Help?</h3>
Still having trouble to speed up your site and need someone to do that for you? Try my <a href="https://dhiratara.me/services/speed-optimization/" rel="nofollow ugc">WordPress Speed Optimization Service</a>.
 
<h3>Check out my other plugins:</h3>
<ul>
<li><a href="https://wordpress.org/plugins/optimize-more-images/" rel="ugc">Optimize More! Images</a> 
A simple yet powerfull image, iframe, and video optimization plugin.</li>
<li><a href="https://wordpress.org/plugins/lazyload-preload-and-more/" rel="ugc">Lazyload, Preload, and more!</a> 
A simplified version of Optimize More! Images. This tiny little plugin (around 14kb zipped) is able to do what Optimize More! Images can do but without UI for settings (you can customize the default settings using filters).</li>
<li><a href="https://wordpress.org/plugins/animate-on-scroll/" rel="ugc">Animate on Scroll</a> 
Animate any Elements on scroll using the popular AOS JS library simply by adding class names.</li>
<li><a href="https://wordpress.org/plugins/shop-extra/" rel="ugc">Shop Extra – WooCommerce Extras</a> 
A lightweight plugin to enhance your WooCommerce & Business site. Floating WhatsApp Chat Widget, WhatsApp Order Button for WooCommerce, Hide/Disable WooCommerce Elements, WooCommerce Strings Translations, add Extra Product Tabs, add Date Picker to products, limit order quantity, add Custom Option to Checkout Page, Add Edit Order features to Checkout page, and many more.</li>
<li><a href="https://wordpress.org/plugins/image-video-lightbox/" rel="ugc">Image & Video Lightbox</a></li>
</ul>

Optimize More!

A DIY WordPress Page Speed Optimization Pack. Optimize CSS & JavaScripts Delivery: Load CSS Asynchronously, Delay CSS & JavaScripts until User …

Cacheability vs Optimize More!