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Removing Render-Blocking Resources

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Identifying and Managing Render-Blocking Resources

Render-blocking resources are files that prevent a webpage from loading quickly. These typically include CSS and JavaScript files that are essential for rendering the page but can delay the initial load time. For eCommerce platforms like Shopify and WooCommerce, optimizing these resources is crucial for improving page speed and user experience.

Identifying Render-Blocking Resources in Shopify

To identify render-blocking resources in Shopify, you can use tools like Google PageSpeed Insights or GTmetrix. These tools will analyze your site and provide a list of resources that are blocking the rendering of your page.

Once identified, you can manage these resources by:

  • Minimizing the use of external scripts and stylesheets.
  • Deferring non-critical JavaScript using the defer attribute.
  • Loading CSS asynchronously using the media attribute or splitting critical CSS.

Implementing Solutions in Shopify

To defer JavaScript in Shopify, you can edit your theme’s theme.liquid file:

For loading CSS asynchronously, you can use:

Identifying Render-Blocking Resources in WooCommerce

Similar to Shopify, you can use Google PageSpeed Insights or GTmetrix to identify render-blocking resources in WooCommerce.

Implementing Solutions in WooCommerce

To defer JavaScript in WooCommerce, you can add the following code to your theme’s functions.php file:

function defer_parsing_of_js ( $url ) { if ( is_user_logged_in() ) return $url; if ( FALSE === strpos( $url, '.js' ) ) return $url; return "$url' defer "; } add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );

For loading CSS asynchronously, you can enqueue styles with the media attribute:

function load_stylesheets() { wp_enqueue_style( 'your-stylesheet', get_template_directory_uri() . '/your-stylesheet.css', array(), null, 'print' ); } add_action( 'wp_enqueue_scripts', 'load_stylesheets' );

By identifying and managing render-blocking resources, you can significantly improve the load time and performance of your eCommerce site on both Shopify and WooCommerce platforms.