Display
Perceived speed
Serving a page fast is not enough: what matters is how long the visitor waits before seeing the page and being able to use it. Three features take care of it, set in the Options tab and in the Settings.
Instant navigation
When the visitor hovers a link of the shop, their browser already prepares the page; on click, it shows instantly. Supported by Chrome, Edge and Opera, with no effect on other browsers. Cart, checkout and account links, and links that perform an action (add to cart, log out, filters), are never prepared. Two levels: prefetching (recommended), or full prerendering, even faster but which runs the scripts of the prepared page — some analytics tools may then count a page the visitor finally does not open.
Prioritised main image
The first large image of the content — product photo, first thumbnail of a category — is downloaded first and never delayed by lazy loading. It is often the image that sets the LCP, Google's display speed indicator.
Real visitor experience
The dashboard shows display speed (LCP), responsiveness (INP), layout stability (CLS) and server response time (TTFB), measured in your visitors' browsers on an adjustable share of page views. Results are given at the 75th percentile — Google's reference — for pages served from the cache and for the others, then per page type, in green, orange or red according to Google's thresholds. No cookie, no IP address, no identifier: no consent is needed.