prismamedia.com website review

2 files block the first paint until they finish downloading. Deferring or inlining them could save about 2.1 s.

80 files are served with short cache lifetimes, so returning visitors download them again (3.5 MB).

32 images could be 2.6 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Your mobile performance score is 72 (desktop: 93). Pages that score under 90 lose visitors before the first paint.

About 180 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 490 ms faster on a phone.

About 22 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.

A phone's processor spends 2.6 s on main-thread work while loading, 942 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

4 third-party services load with your homepage (Google Tag Manager, pmdstatic.net and AddToAny and others), adding 257 KiB and 230 ms of main-thread time.

10 long tasks block the main thread while loading, the longest for 150 ms. During a long task the page ignores taps.

Polyfills for old browsers add 42 KiB JavaScript that modern phones do not need.

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

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Visually, the page fills in at 8.7 s (Speed Index). Good is under 3.4 s.

Real visitors wait 996 ms for your server to start answering (75th percentile). Good is under 800 ms.

The first text or image appears after 2.9 s on a phone. Good is under 1.8 s.

The page becomes fully interactive after 6.9 s. Good is under 3.8 s.

Your largest element takes 3.5 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Prisma Media créer, informer, engager.”. Most of its time is element render delay (1.8 s).

Scripts block taps and scrolling for 285 ms in total while the page loads. Good is under 200 ms.

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

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 125 ms to 119 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 1.9 s to 2.0 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 3.8 MB in 95 requests on a phone: images 3.1 MB (57), scripts 575 KiB (24) and fonts 51 KiB (2). Under 2 MB keeps phones on slow connections fast.

5 images (609 KiB) are 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.

2 images are downloaded at several times the size a phone draws them, for example Footer-VF-LK.png at 1,080 px wide, shown at 35 px. Resized copies would save about 212 KiB.

By the Sustainable Web Design model, a visit to your homepage emits about 1.08 g of CO₂e: 129.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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

Banner landmark should not be contained in another landmark: 1 element on the page fails this check, rated moderate by axe-core.

Document should not have more than one banner landmark: 1 element on the page fails this check, rated moderate by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 1 element on the page fails this check, rated moderate by axe-core.

41 visible links have no text or label, so screen readers cannot say where they go.

Your title is only 21 characters: “Accueil - Prismamedia”. Between 30 and 65 characters leaves room to say what you do and for whom.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

The homepage links to 80 pages on prismamedia.com and 10 external pages.

The HTML your server sends has 378 of the 701 words a browser shows. AI crawlers don't run JavaScript, so they miss the rest.

There is no https://www.prismamedia.com/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.prismamedia.com/groupe and https://www.prismamedia.com/groupe/presentation-du-groupe all use the title “Présentation du groupe - Prismamedia”, and 1 other title repeat too. Search engines can't tell which page to show for a search, so each competes with the others.

https://www.prismamedia.com/marques, https://www.prismamedia.com/prismamediasolutions and https://www.prismamedia.com/marques/editions-prisma have no meta description, so Google writes the search snippet from whatever text it finds.

https://www.prismamedia.com/groupe and https://www.prismamedia.com/groupe/presentation-du-groupe use the same meta description. A description written for each page earns more clicks.

Your homepage links to 2 pages by a URL that isn't their canonical one, for example https://www.prismamedia.com/groupe, whose canonical is https://www.prismamedia.com/groupe/presentation-du-groupe. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

https://www.prismamedia.com/prismamediasolutions has no <h1> headline, so visitors and search engines get no clear main topic.

https://www.prismamedia.com/marques has under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.

We fetched 15 pages linked from your homepage (of 50 found) and read each the way a search engine does.

27 images are displayed at the wrong aspect ratio, so they look stretched or squashed.

2 images are served at too low a resolution for sharp phone screens.

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

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 701 words of visible text.

Before a visitor clicks anything, the page loads Google Tag Manager (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 2 cookies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 5 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.