Feature: The “Delete Critical CSS” option in W3Speedster enables developers and administrators to manually clear all previously generated Critical CSS. Critical CSS contains the essential above-the-fold styles that are rendered immediately during page load to improve perceived performance. Clearing this cache ensures that any recent styling modifications are accurately reflected in the initial page render. […]
Doc Category: Symfony
Delete HTML/JS/CSS Cache
Feature: The “Delete HTML/JS/CSS Cache” feature in W3Speedster enables you to clear all cached HTML, JavaScript and CSS files that have been previously minified and combined for performance optimization. While asset caching accelerates page loads by reducing file size and request counts, it may cause issues when scripts or stylesheets are updated. This function ensures […]
Delete HTML Cache
Feature: The “Delete HTML Cache” feature in W3Speedster allows administrators and developers to manually clear the static HTML versions of cached pages. HTML caching significantly improves performance by serving pre-rendered pages, but when your site content or layout changes, the cached files can become outdated. This feature ensures that updates are reflected immediately on the […]
Cache
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Custom JavaScript to Load After Page Load
Feature: The “Custom JavaScript to Load After Page Load” feature in W3Speedster enables developers to execute JavaScript only after the entire web page—including HTML, CSS, JavaScript, images, and other assets—has fully loaded. This is achieved by leveraging the window.onload event to defer non-critical scripts, ensuring a smoother initial render and improved performance. Why We Need […]
Custom JavaScript to Load on Page Load
Feature: The “Custom JavaScript to Load on Page Load” feature in W3Speedster allows developers to inject JavaScript code early in the page lifecycle—ideal for initializing UI components, activating third-party integrations, or defining site-wide logic that must be available immediately. W3Speedster provides two flexible loading modes for custom scripts: As File – Load the script from […]
Custom CSS to Load on Page Load
Feature: The “Custom CSS to Load on Page Load” feature in W3Speedster enables developers to inject critical CSS rules directly into the page’s initial HTML, ensuring that these styles render immediately upon load. This functionality is essential for enhancing the visual stability and user experience by controlling above-the-fold content rendering, especially in sites using deferred […]
Custom Code
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Exclude Page from JavaScript Optimization
Feature: The “Exclude Pages from JavaScript Optimization” feature in W3Speedster allows site administrators to bypass JavaScript optimizations such as minification, merging, and lazy loading on selected pages. This is essential when specific scripts must load in their original order or format to maintain full functionality. Why We Need It Preserve Script Functionality: Some JavaScript files […]
Exclude Inline JavaScript from Lazy Load
This feature allows you to exclude specific inline JavaScript from being lazy-loaded. For example, you might want to exclude scripts like ‘Google Analytics’ to ensure they load immediately and function correctly without delay. This helps maintain essential functionalities while still benefiting from lazy loading for other scripts. […]
