LCP: load the important thing sooner
Largest Contentful Paint is commonly affected by server response, the LCP resource's discovery and priority, render-blocking CSS, heavy JavaScript, and oversized hero media.
Improve it by fixing the server/cache path first, then making the LCP resource discoverable and appropriately prioritized.
INP: reduce interaction delay
Interaction to Next Paint reflects responsiveness. Heavy JavaScript execution, long tasks, complex DOM work, and third-party scripts can increase interaction delay.
Delaying nonessential JavaScript can help the initial experience, but the long-term goal is less main-thread work, not merely moving all work later.
See the current product details and offer directly from WP Rocket.
View WP Rocket →CLS: reserve space
Cumulative Layout Shift often comes from images or embeds without dimensions, late-injected banners, font swaps, ads without reserved space, and UI elements inserted above existing content.
Plugin role
WP Rocket currently exposes features relevant to these areas, including page caching, critical-image optimization, automatic lazy rendering, Remove Unused CSS, deferred JavaScript, Delay JavaScript Execution, LazyLoad, missing image dimensions, and font-related settings. Test each feature against your site's actual bottleneck.