With the W3Speedster Plugin, you can exclude specific JavaScript files from lazy loading and minification by entering their URLs in the relevant section. For example, if you have a JavaScript file like xyz.js that you do not want to lazy load or minify, simply provide its URL. This ensures those scripts are loaded normally while […]
Doc Category: Symfony
Force Lazy Load Javascript
Feature: The “Force Lazy Load JavaScript” feature in W3Speedster allows developers to defer the loading of non-critical JavaScript files or inline scripts that are not essential for the initial render. This includes third-party scripts such as social media widgets, analytics trackers, and marketing tools. Delaying these scripts improves performance without affecting primary functionality. Why We […]
Exclude Pages from CSS Optimization
Feature: The “Exclude Pages from CSS Optimization” feature in W3Speedster allows developers to opt out specific URLs from receiving CSS performance enhancements such as minification, merging, critical CSS injection, and lazy loading of stylesheets. This ensures that design integrity and functional styling are maintained on complex, third-party, or interactive pages where CSS modifications may lead […]
Force Lazy Load Link Tag CSS
Feature: The “Force Lazy Load Link Tag CSS” feature in W3Speedster enables developers to intentionally defer the loading of non-critical CSS files such as icon libraries and font stylesheets (e.g., fontawesome.css, icons.css). These CSS files are typically large and not required immediately during the initial page render, making them prime candidates for lazy loading to […]
Exclude Link Tag CSS from Optimization
Feature: The “Exclude Link Tag CSS from Optimization” feature in W3Speedster empowers developers and site administrators to selectively exclude specific CSS files from being affected by optimization techniques such as minification, combination, and lazy loading. This capability is essential for maintaining layout consistency, preventing conflicts, and ensuring third-party compatibility in complex or legacy environments. Why […]
Exclude Pages From Optimization
Feature: The “Exclude Pages from Optimization” feature in W3Speedster allows developers to completely bypass all frontend performance enhancements—including CSS/JS minification, lazy loading, image optimization, and resource deferral—for specified pages. This ensures that critical or sensitive pages retain their original behavior and structure, avoiding disruptions that may be caused by aggressive optimizations. Why We Need It […]
Exclude Images from Lazy Loading
Feature: The Exclude Resources from Lazy Loading feature in W3Speedster empowers developers to precisely define which assets, such as images, videos, js or iframes—should not be subjected to lazy loading. While lazy loading is essential for deferring non-critical content, certain resources (especially those above the fold or involved in early interactions) must load immediately to […]
Preload Resources
Feature: The Preload Resources feature in W3Speedster enables developers to instruct browsers to prioritize fetching specific critical resources early, before they are discovered through standard HTML parsing. By injecting <link rel=”preload”> directives into the document head, this mechanism accelerates the delivery of high-priority assets such as stylesheets, fonts, scripts, and images, improving page load speed […]
Exclusions
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Load Javascript Inline Script as URL
Feature: This feature in W3Speedster externalizes large or critical inline JavaScript code blocks by converting them into standalone files. These files are then referenced using standard <script src=”…”> tags. The goal is to reduce HTML size, improve browser caching, enable async or deferred loading, and comply with security practices like Content Security Policy (CSP). Why […]
