Title: SOptimizer – Critical CSS, WebP, Asset Manager & Bloat Remover Author: Sky Plugins Published: August 14, 2026 Last modified: August 14, 2026 --- Search plugins ![](https://ps.w.org/siteskyline-optimizer/assets/banner-772x250.png?rev=3647173) ![](https://ps.w.org/siteskyline-optimizer/assets/icon-256x256.png?rev=3647173) # SOptimizer – Critical CSS, WebP, Asset Manager & Bloat Remover By [Sky Plugins](https://profiles.wordpress.org/siteskyline/) [Download](https://downloads.wordpress.org/plugin/siteskyline-optimizer.0.2.3.zip) * [Details](https://wordpress.org/plugins/siteskyline-optimizer/#description) * [Reviews](https://wordpress.org/plugins/siteskyline-optimizer/#reviews) * [Installation](https://wordpress.org/plugins/siteskyline-optimizer/#installation) * [Development](https://wordpress.org/plugins/siteskyline-optimizer/#developers) [Support](https://wordpress.org/support/plugin/siteskyline-optimizer/) ## Description **SOptimizer** is an all-in-one, ultra-lightweight WordPress performance and speed optimization plugin designed to boost your Google PageSpeed Insights score, pass Core Web Vitals (LCP, INP, CLS), and deliver instant page loads for your visitors and WooCommerce customers. Unlike bloated cache plugins that overwhelm you with confusing settings or break your layout, SOptimizer delivers surgical, clean performance enhancements. Every single toggle is safe, modular, and 100% opt-in. Whether you run a high-traffic content blog, an agency client website, or a busy WooCommerce store, SOptimizer gives you everything you need to eliminate bottlenecks, strip unused code, convert images to next-gen WebP, inline Critical CSS, self-host Google Fonts, and accelerate page delivery. ### 🚀 Key Performance Highlights * **Static HTML Page Caching:** Instant cache generation with preloading, auto- purge on content updates, and dynamic exclusions. * **Asset Manager & Script Unloader:** Scan, analyze, and conditionally disable unused CSS and JavaScript handles per page or post type. * **Next-Gen WebP Conversion:** Automatic conversion of JPEG and PNG uploads to WebP, plus one-click bulk library optimization. * **Critical CSS Generation:** 100% in-browser generation that extracts above-the- fold styling and eliminates render-blocking stylesheets. * **LCP & Image Optimization:** Priority `fetchpriority="high"` for hero images, responsive `srcset` with `sizes="auto"`, and native lazy loading. * **Local Google Fonts Hosting:** Download and serve Google Fonts locally to speed up rendering, eliminate external DNS lookups, and ensure GDPR compliance. * **JavaScript Optimization:** Defer non-critical scripts, delay heavy scripts until user interaction, and remove legacy jQuery Migrate. * **Database Cleanup & Maintenance:** Remove revisions, drafts, spam comments, and expired transients, plus optimize MySQL tables in one click. * **WordPress Core Head & Bloat Cleaner:** Remove emojis, oEmbed links, RSS feed links, XML-RPC, Pingbacks, guest REST API requests, and admin Heartbeat bloat. * **WooCommerce Speed Suite:** Disable `wc-cart-fragments` AJAX, unload store scripts from non-shop pages, optimize Action Scheduler background crons, and disable admin marketing bloat. * **Third-Party Integrations:** Built-in speed enhancements for Elementor, WooCommerce Stripe Payment Gateway, and WPForms. ### ⚡ Comprehensive Feature Breakdown #### 1. High-Speed Page Caching & Server Acceleration * **Instant Static Page Cache:** Generates lightweight static HTML snapshots to bypass heavy PHP and MySQL execution. * **Intelligent Cache Preloader:** Automatically crawls and warms your cache before visitors arrive. * **Smart Purge Triggers:** Flushes relevant cache files automatically when posts, pages, or WooCommerce products are published or edited. * **Flexible Cache Exclusions:** Bypass caching for specific URLs, query strings, or visitor cookies (e.g. active carts and logged-in users). * **Browser Caching Headers:** One-click insertion of 1-year `Cache-Control` rules into `.htaccess` (Apache/LiteSpeed) or ready-to-paste Nginx directives. * **PHP OPcache Monitoring & Control:** Inspect OPcache memory usage, hit rate, and cached script count, with one-click cache reset. * **Object Cache Support:** Connect persistent Redis or Memcached object backends to accelerate database queries. #### 2. Visual Asset Manager & Conditional Script Unloader * **Enqueued Asset Analyzer:** Inspect every CSS stylesheet and JavaScript file loaded across each page template. * **Conditional Dequeue Rules:** Disable heavy plugins or script handles globally, on specific URLs, or across post types. * **Visual Frontend Asset Picker:** Point and click on frontend elements to identify and unload unnecessary assets right from the WordPress admin bar. * **Eliminate Unused CSS/JS:** Stop contact form scripts, slider assets, and tracking snippets from loading on pages where they aren’t used. #### 3. Next-Gen WebP Images & Core Web Vitals (LCP/CLS) * **WebP Conversion Engine:** Automatically converts newly uploaded PNG and JPEG media into lightweight WebP format. * **Bulk Media Library Converter:** Upgrade your existing media library to WebP with a single click. * **LCP Hero Image Preload:** Automatically detects your largest above-the-fold image and assigns `fetchpriority="high"` to maximize Largest Contentful Paint. * **Responsive Image Delivery:** Automatically generates missing `srcset` sizes on the fly and sets `sizes="auto"` for perfectly rendered images without database bloat. * **CLS Layout Shift Prevention:** Injects intrinsic width and height attributes to eliminate Cumulative Layout Shift. * **Native Browser Lazy Loading:** Defers below-the-fold images natively without heavy third-party JavaScript libraries. #### 4. Critical CSS & Render-Blocking Style Elimination * **Zero-Cost In-Browser Generation:** Generates Critical CSS directly inside your browser without external APIs, accounts, or recurring subscription fees. * **Above-The-Fold Rule Extraction:** Sweeps the initial viewport to extract only required layout styles and inlines them directly into ``. * **Asynchronous CSS Delivery:** Converts secondary stylesheets to asynchronous loading (`media="print"` with `onload` swap) to completely eliminate render-blocking CSS. * **Automatic CSS Minification:** Compresses extracted CSS with built-in minification( stripping duplicate rules, compacting selectors, removing whitespace). * **Custom Fallback & Invalidation:** Automatically refreshes styles when templates or theme files change. #### 5. Local Google Fonts & GDPR Privacy * **Self-Host Google Fonts:** Automatically downloads Google Fonts to your local server (`/wp-content/uploads/siskopfowo-fonts/`) and serves modern WOFF2 files. * **Eliminate External DNS Lookups:** Cuts out connections to `fonts.googleapis. com` and `fonts.gstatic.com` for faster rendering and total GDPR compliance. * **Font-Display Swap:** Enforces `font-display: swap` to prevent Flash of Invisible Text (FOIT). * **Font Preload Hints:** Preloads crucial local font files so typography renders instantly on page load. #### 6. JavaScript Deferral & Delay Manager * **Defer Non-Critical JavaScript:** Moves non-critical scripts to the footer or applies `defer` attributes to prevent parsing delays. * **Delay Heavy Scripts:** Postpones loading intensive scripts (such as marketing analytics, live chat, or tracking pixels) until first user interaction (scroll, click, keypress). * **jQuery Migrate Removal:** Safely strips redundant legacy jQuery Migrate scripts. * **Granular Exclusions:** Exclude essential scripts by handle or URL keyword to prevent theme conflicts. #### 7. Database Cleaner & Optimizer * **Post Revisions & Drafts Cleanup:** Delete accumulated post revisions, auto- drafts, and trashed posts to trim database bloat. * **Comment Cleanup:** Remove spam, unapproved, and trashed comments in bulk. * **Expired Transients Purge:** Clean up orphaned and expired WordPress transient cache entries. * **Table Optimization:** Run MySQL/MariaDB database optimization queries to reclaim unused disk space and boost query response times. #### 8. WordPress Core Head Cleaner & Bloat Removal * **Head Clutter Removal:** Strip generator tags, RSD/WLW manifest links, shortlinks, and unnecessary REST discovery links from the HTML head. * **Disable Emojis:** Remove WordPress emoji JavaScript, CSS, and DNS prefetch hints. * **Disable oEmbed:** Disable remote embed discovery scripts and REST API endpoints. * **Disable Feeds:** Remove unused RSS, Atom, and comment feed links. * **Disable XML-RPC & Pingbacks:** Close vulnerable `xmlrpc.php` endpoints and pingback headers to harden security and reduce server load. * **Guest REST API Protection:** Restrict public REST API access to logged-in users only. * **Admin Heartbeat Control:** Throttle or disable WordPress Heartbeat API calls in the admin dashboard. #### 9. WooCommerce Performance Suite * **Store Mode Presets:** One-click performance presets tailored for **Lightweight Stores**, **Digital Download Stores**, **Physical eCommerce**, or **Standard** configurations. * **Disable Cart Fragments:** Turn off the resource-draining `wc-cart-fragments` AJAX request on non-shop pages to eliminate server bottlenecks. * **Unload WooCommerce Assets:** Restrict WooCommerce CSS and JavaScript to only load on product, shop, cart, and checkout pages. * **Disable Unused Core Modules:** Turn off features you don’t use (e.g., product reviews, coupons, tax calculations, shipping calculators, geolocation, brands package, or order attribution). * **Action Scheduler & Cron Tuning:** Optimize WooCommerce background cron queues, purge old action logs, and adjust batch execution sizes. * **Admin Bloat & Analytics Control:** Turn off heavy WooCommerce analytics reports, dashboard widgets, and promotional notifications to keep `wp-admin` lightning fast. * **Transactional Email Optimizer:** Disable unnecessary customer email triggers and streamline dispatch queues. #### 10. Dedicated 3rd-Party Optimizers * **Elementor Optimizer:** Strip unused Google Fonts, Font Awesome icon libraries, and remote template calls enqueued by Elementor. * **Stripe Gateway Scoper:** Limit Stripe checkout scripts strictly to payment and checkout endpoints, stopping them from loading across the entire site. * **WPForms Optimizer:** Conditionally load WPForms assets only on pages that contain an active form block or shortcode. ### 💎 Upgrade to SOptimizer Pro Take your website speed and automation to the next level with **SOptimizer Pro**. Unlock advanced Cloudflare edge CDN integration, automated background asset scanning, and enterprise-grade speed tools. #### What’s Included in Pro: * 🌐 **Full Cloudflare API v4 Edge Integration:** - Auto-discover Cloudflare zones with a secure API token. - 1-Click Cloudflare Edge Cache Purge (Entire site or individual URLs). - Synchronize Browser Cache TTL and Edge Cache levels directly from WordPress. - Toggle Cloudflare Development Mode with an automated countdown timer. - Enable Always Online™ and optimize edge delivery effortlessly. * 🤖 **Automated Unused Code Scanner:** - Background iframe DOM evaluation across all active post types and templates. - Real-time CSS and JavaScript handle coverage percentage calculation. - Automated 1-click rule generation to unload, defer, or delay unused code. * 🚀 **Priority VIP Support:** Fast-track technical support from dedicated WordPress optimization engineers. * 🔄 **Automatic Background Pro Updates:** Seamless updates delivered right inside your WordPress dashboard. 👉 **[Upgrade to SOptimizer Pro](https://siteskyline.com/siteskyline-optimizer-pro/)** and experience peak WordPress performance! ### 🔒 Privacy & Telemetry Notice Your privacy and site data security are our highest priority: * **Plugin Improvement Only:** Any optional usage telemetry and diagnostic data (such as PHP/WordPress environment versions and active module configurations) is used exclusively to improve the plugin’s performance, stability, and feature compatibility. * **Never Shared with Third Parties:** Your data is strictly confidential and is never shared, sold, or distributed to any third parties or external services. * For more information on our data practices, please review our official [Privacy Policy](https://siteskyline.com/privacy-policy/). ## Screenshots [⌊Quick optimize dashboard with 1-click speed toggles.⌉⌊Quick optimize dashboard with 1-click speed toggles.⌉[ Quick optimize dashboard with 1-click speed toggles. [⌊Auto-optimization recommendations modal with PageSpeed score estimation and safety intelligence.⌉⌊Auto-optimization recommendations modal with PageSpeed score estimation and safety intelligence.⌉[ Auto-optimization recommendations modal with PageSpeed score estimation and safety intelligence. [⌊Asset optimize dashboard with CSS & JavaScript inventory and auto-analysis.⌉⌊Asset optimize dashboard with CSS & JavaScript inventory and auto-analysis.⌉[ Asset optimize dashboard with CSS & JavaScript inventory and auto-analysis. [⌊Asset rule configuration modal for defer, delay, preload, inline, and unload actions.⌉⌊ Asset rule configuration modal for defer, delay, preload, inline, and unload actions .⌉[ Asset rule configuration modal for defer, delay, preload, inline, and unload actions. [⌊Asset rules dashboard overview of all active rules by plugin, theme, and core.⌉⌊ Asset rules dashboard overview of all active rules by plugin, theme, and core.⌉[ Asset rules dashboard overview of all active rules by plugin, theme, and core. [⌊HTML page cache settings with file, Redis, Memcached, and APCu backend support.⌉⌊ HTML page cache settings with file, Redis, Memcached, and APCu backend support.⌉[ HTML page cache settings with file, Redis, Memcached, and APCu backend support. [⌊Browser caching rules with 1-year static asset headers and server config snippets.⌉⌊ Browser caching rules with 1-year static asset headers and server config snippets .⌉[ Browser caching rules with 1-year static asset headers and server config snippets. [⌊Critical CSS settings with frontend injection and Extreme vs Safe deferral modes.⌉⌊ Critical CSS settings with frontend injection and Extreme vs Safe deferral modes .⌉[ Critical CSS settings with frontend injection and Extreme vs Safe deferral modes. [⌊Critical CSS generation status table and per-template overrides.⌉⌊Critical CSS generation status table and per-template overrides.⌉[ Critical CSS generation status table and per-template overrides. [⌊WebP image conversion settings with compression quality and upload automation.⌉⌊ WebP image conversion settings with compression quality and upload automation.⌉[ WebP image conversion settings with compression quality and upload automation. [⌊Responsive image sizing settings with on-demand resizing and cache management.⌉⌊ Responsive image sizing settings with on-demand resizing and cache management.⌉[ Responsive image sizing settings with on-demand resizing and cache management. [⌊Image dimensions for CLS layout shift prevention and native lazy loading.⌉⌊Image dimensions for CLS layout shift prevention and native lazy loading.⌉[ Image dimensions for CLS layout shift prevention and native lazy loading. [⌊Local Google Fonts self-hosting with font analyzer and WOFF2 local download.⌉⌊ Local Google Fonts self-hosting with font analyzer and WOFF2 local download.⌉[ Local Google Fonts self-hosting with font analyzer and WOFF2 local download. [⌊JavaScript deferral settings with script exclusions and sequential execution.⌉⌊ JavaScript deferral settings with script exclusions and sequential execution.⌉[ JavaScript deferral settings with script exclusions and sequential execution. [⌊Persistent object cache drop-in activation and latency monitor.⌉⌊Persistent object cache drop-in activation and latency monitor.⌉[ Persistent object cache drop-in activation and latency monitor. [⌊PHP Zend OPcache bytecode cache monitoring and manual configuration snippet.⌉⌊ PHP Zend OPcache bytecode cache monitoring and manual configuration snippet.⌉[ PHP Zend OPcache bytecode cache monitoring and manual configuration snippet. [⌊WordPress core feature manager with presets, page head cleaner, and bloat toggles.⌉⌊ WordPress core feature manager with presets, page head cleaner, and bloat toggles .⌉[ WordPress core feature manager with presets, page head cleaner, and bloat toggles. [⌊Database cleaner for expired transients, revisions, drafts, and MySQL table optimization.⌉⌊ Database cleaner for expired transients, revisions, drafts, and MySQL table optimization .⌉[ Database cleaner for expired transients, revisions, drafts, and MySQL table optimization. ## Installation ### Automatic Installation (Recommended) 1. Log in to your WordPress Dashboard. 2. Go to **Plugins Add New**. 3. Search for **SOptimizer**. 4. Click **Install Now** and then **Activate**. 5. Navigate to **SkyPlugins Optimizer** to configure your settings. ### Manual Installation 1. Download the `siteskyline-optimizer.zip` file. 2. Extract the folder and upload `siteskyline-optimizer` to your `/wp-content/plugins/` directory. 3. Activate the plugin through the **Plugins** menu in WordPress. 4. Navigate to **SkyPlugins Optimizer** to begin optimizing your site. ### Quick Start Checklist (Recommended First Steps) 1. **Enable Page Caching:** Go to **Cache Page Cache** and toggle **Enable Page Cache** on. 2. **Optimize Images:** Go to **Media WebP** and enable **Auto-convert Uploads**, then run the **Bulk Converter** for existing images. 3. **Fix Core Web Vitals:** Go to **Style Critical CSS** and click **Generate Critical CSS**. 4. **Self-Host Fonts:** Go to **Style Fonts** and toggle **Self-Host Google Fonts** on. 5. **Clean Core Bloat:** Go to **Feature Manager WordPress** to disable emojis, embeds, and XML-RPC. 6. **Accelerate WooCommerce (If Active):** Go to **Feature Manager WooCommerce Modes** and select the preset matching your store type. ## FAQ ### Will SOptimizer break my website? No. SOptimizer is built with safety as top priority. All optimization toggles are non-destructive and opt-in. Each setting includes descriptive safety labels, and you can easily exclude specific scripts, styles, or URLs if a third-party plugin requires special handling. ### Does this plugin require WooCommerce to work? No! SOptimizer works on any WordPress website. Core features such as Page Caching, WebP conversion, Critical CSS, Asset Manager, Font Self-Hosting, and Database Cleanup work on every WordPress site. The WooCommerce section activates only when WooCommerce is installed and active. ### How does WebP conversion improve my site speed? WebP images are typically 25% to 35% smaller than comparable JPEG and PNG files at the same visual quality. Smaller image files drastically reduce page payload, lower server bandwidth usage, and speed up Largest Contentful Paint (LCP). ### How does Critical CSS Generation work? Critical CSS identifies the CSS rules required to render content in the user’s initial screen (above the fold). The plugin generates this CSS directly in your browser, minifies it, and inlines it into the HTML head while deferring secondary stylesheets. This eliminates render-blocking CSS warnings in Google PageSpeed Insights. ### Does Critical CSS generation send my data to external servers? No! Unlike other plugins that require costly API credits or send your layout data to third-party cloud servers, SOptimizer generates Critical CSS 100% locally inside your browser. Your data never leaves your server. ### How does Local Google Fonts hosting help with GDPR? When browsers load fonts directly from Google’s servers (`fonts.googleapis.com`), visitor IP addresses are transmitted to Google. By downloading font files to your local server and rewriting stylesheet links, SOptimizer eliminates external requests, ensuring full GDPR compliance and faster local delivery. ### What is the Cart Fragments optimization in WooCommerce? By default, WooCommerce triggers an AJAX request (`wc-cart-fragments`) on every single page load to update the mini-cart count. On busy sites or non-eCommerce pages( like blog posts), this causes severe server load and slow Time to First Byte (TTFB). SOptimizer disables this request on non-shop pages while keeping the cart functional where needed. ### Can I use SOptimizer alongside a CDN like Cloudflare? Yes! SOptimizer works seamlessly with all major CDNs including Cloudflare, BunnyCDN, Fastly, and KeyCDN. If you use Cloudflare, upgrading to **SOptimizer Pro** allows you to connect the Cloudflare API to purge edge cache and manage DNS/cache settings right from WordPress. ### How do I exclude certain scripts from deferral or delay? In the **JavaScript** settings tab, simply enter the script handle or a URL keyword( e.g., `jquery-core` or `custom-tracker.js`) into the Exclusion list. The plugin will skip deferral for those specific scripts. ### How do I clear the page cache when I update content? SOptimizer automatically purges relevant cached pages when you publish, edit, or delete posts, pages, or products. You can also manually purge the entire cache at any time using the **Purge Cache** button on the Optimize Dashboard or WordPress admin toolbar. ### Does it work with the latest WordPress and WooCommerce? Yes. The plugin is tested and fully compatible with WordPress up to 7.0 and WooCommerce up to 11.0 (including HPOS / High-Performance Order Storage). ### Does SOptimizer share my telemetry or site data? No. Any optional diagnostic telemetry is collected solely to diagnose issues, improve plugin performance, and ensure broad compatibility. Your data is strictly confidential and is never shared, rented, or sold to any third parties. Read our full privacy policy at https://siteskyline.com/privacy-policy/. ### What happens if I deactivate or uninstall the plugin? When deactivated, all optimizations cleanly disconnect and your website immediately reverts to default WordPress behavior. No core WordPress files or database tables are permanently altered. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “SOptimizer – Critical CSS, WebP, Asset Manager & Bloat Remover” is open source software. The following people have contributed to this plugin. Contributors * [ Sky Plugins ](https://profiles.wordpress.org/siteskyline/) [Translate “SOptimizer – Critical CSS, WebP, Asset Manager & Bloat Remover” into your language.](https://translate.wordpress.org/projects/wp-plugins/siteskyline-optimizer) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/siteskyline-optimizer/), check out the [SVN repository](https://plugins.svn.wordpress.org/siteskyline-optimizer/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/siteskyline-optimizer/) by [RSS](https://plugins.trac.wordpress.org/log/siteskyline-optimizer/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 0.2.3 * Initial public release. * Added static HTML Page Caching with automatic preloader and purge rules. * Added Asset Manager & Analyzer with conditional script and style unloading. * Added Next-Gen WebP Conversion engine (GD & Imagick support) with bulk converter. * Added 100% In-Browser Critical CSS Generation with automated viewport analyzer and minification. * Added Local Google Fonts hosting with WOFF2 download and GDPR compliance. * Added LCP Hero Image Preload, responsive `srcset`, and native lazy loading. * Added JavaScript Deferral, Interaction Delay, and jQuery Migrate cleaner. * Added Database Cleaner for revisions, drafts, spam comments, and expired transients. * Added WordPress Core Head Cleaner for emojis, embeds, RSS feeds, XML-RPC, and pingbacks. * Added WooCommerce Performance Suite: Store Modes, Cart Fragments disable, asset unloading, and Action Scheduler tuning. * Added dedicated speed enhancements for Elementor, Stripe Payment Gateway, and WPForms. * Added compatibility with PHP 8.x, WordPress up to 7.0, and WooCommerce up to 11.0 (including HPOS). ## Meta * Version **0.2.3** * Last updated **11 hours ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **7.0.4** * PHP version ** 7.4 or higher ** * Tags * [asset manager](https://wordpress.org/plugins/tags/asset-manager/)[cache](https://wordpress.org/plugins/tags/cache/) [Critical CSS](https://wordpress.org/plugins/tags/critical-css/)[speed](https://wordpress.org/plugins/tags/speed/) [webp](https://wordpress.org/plugins/tags/webp/) * [Advanced View](https://wordpress.org/plugins/siteskyline-optimizer/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/siteskyline-optimizer/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/siteskyline-optimizer/reviews/) ## Contributors * [ Sky Plugins ](https://profiles.wordpress.org/siteskyline/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/siteskyline-optimizer/)