cned.fr website review

About 532 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.5 s faster on a phone.

6 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.4 s.

4 images could be 416 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 900 ms faster on a phone.

Your mobile performance score is 67. Pages that score under 90 lose visitors before the first paint.

15 files are served with short cache lifetimes, so returning visitors download them again (414 KiB).

8 third-party services load with your homepage (Google Tag Manager, Optanon and AB Tasty and others), adding 1.0 MB and 437 ms of main-thread time.

About 83 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 300 ms faster on a phone.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 350 ms).

Google Tag Manager costs a phone 267 ms of main-thread work and 341 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

AB Tasty costs a phone 45 ms of main-thread work and 411 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

Polyfills for old browsers add 9 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.

3 long tasks block the main thread while loading, the longest for 105 ms. During a long task the page ignores taps.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

3 KiB could be saved by minifying CSS.

Your largest element takes 13.8 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “image (1).png”.

The page becomes fully interactive after 14.0 s. Good is under 3.8 s.

Visually, the page fills in at 6.6 s (Speed Index). Good is under 3.4 s.

1 image have no width and height attributes, so the layout jumps as each one loads.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 154 ms to 153 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 1.1 s to 1.1 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 2.3 MB in 100 requests on a phone: images 1,014 KiB (34), scripts 983 KiB (33) and fonts 199 KiB (2). Under 2 MB keeps phones on slow connections fast.

1 image (116 KiB) is JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

3 images further down the page (188 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 0.65 g of CO₂e: 77.8 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Elements use prohibited ARIA attributes (1 element).

1 text element doesn't have enough contrast against the background to read easily, especially outdoors on a phone.

1 frame has no title, so screen-reader users cannot tell what it contains.

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

No Open Graph image (also missing: og:title, og:description), so links shared on LinkedIn, Slack or Facebook show no preview picture.

No twitter:card tag. X falls back to Open Graph, which is incomplete here.

The homepage links to 135 pages on cned.fr and 9 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no https://www.cned.fr/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

https://www.cned.fr/compte, https://www.cned.fr/panier and https://www.cned.fr/recherche are marked noindex but linked from your homepage. If they are meant to be found, remove the noindex.

https://www.cned.fr/compte and https://www.cned.fr/panier all use the title “| Cned”. Search engines can't tell which page to show for a search, so each competes with the others.

https://www.cned.fr/compte, https://www.cned.fr/panier and https://www.cned.fr/recherche have no meta description, so Google writes the search snippet from whatever text it finds.

https://www.cned.fr/compte and https://www.cned.fr/panier have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 85 found) and read each the way a search engine does.

14 of 42 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

3 third-party cookies are set on load; browsers are restricting these, so whatever relies on them breaks.

Chrome logged issues while loading the page (“Cookie”).

Large scripts ship without source maps.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

We found no call-to-action buttons or links (such as “Book a demo” or “Get a quote”) anywhere on the homepage.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 669 words of visible text.

Before a visitor clicks anything, the page loads Google Ads and Google Tag Manager (measured from a US location before any click). A consent tool (OneTrust) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 1 cookie (measured from a US location before any click).

Loading the homepage contacts 13 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.