Control WordPress page delivery

PageSpeed Ninja Pro is a paid WordPress performance add-on with settings for caching, asset delivery, pictures, and front-end loading. Its controls can help address slow server responses, large transfers, render-blocking resources, and image-related layout shifts. Results depend on your hosting, site structure, theme, content, and other plugins.

Reduce requests and file sizes

• Use advanced page caching alongside browser and server-side caching for static assets.
• Apply Gzip or Brotli compression to text resources, and minify HTML, CSS, and JavaScript.
• Bundle or inline CSS and JavaScript to reduce requests.
• Use Pro multithreaded background optimization and CLI asset optimization for supported files.

Prioritize what loads first

Critical CSS can be generated and inlined for above-the-fold content, while nonessential CSS and JavaScript can be deferred or loaded asynchronously. Preconnect, DNS prefetch, and preload controls help prioritize required origins and key requests. Font settings include Google Fonts loading controls and swap behavior, which displays fallback text while web fonts load.

JavaScript settings include selective delays, controls for asynchronous scripts, and detection of polyfill files so they can be loaded in legacy browsers. The plugin can also manage emoji loading and embedded legacy plugins such as Flash, ActiveX, and Silverlight. Pro settings can conceal extra DOM elements until user interaction and include backup and restore capabilities.

Optimize images and layout

Adjust JPEG, WebP, and AVIF quality, convert existing images to WebP, and use AVIF image optimization. Lazy loading can defer offscreen images, videos, and iframes. Gradient or blurred low-quality placeholders can appear while images load, and image width and height attributes let browsers reserve space to help prevent layout shifts.

Choose settings for your site

During setup, select and save one of five presets: Optimal is intended for most sites; Safe enables a smaller set of optimizations to prioritize compatibility; Compact focuses on disk space and disables image optimization and WebP conversion; Ultra aims for more extensive optimization and may conflict with some themes or plugins; Experimental is for testing functions that may be less stable. Settings are organized around PageSpeed Insights categories, and all optimizations are disabled by default. General settings control groups, while Advanced settings provide finer adjustments.

Back up your site, install and activate the plugin, choose a preset, then review and enable the suggested settings. Test important pages after changing caching, minification, script timing, image delivery, or critical CSS. Other caching and optimization tools may conflict with these settings. A free license key is required for connectivity to the plugin's servers.