iseg.fr website review

7 files are served with short cache lifetimes, so returning visitors download them again (1.0 MB).

About 287 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.6 s faster on a phone.

Your mobile performance score is 53 (desktop: 66). Pages that score under 90 lose visitors before the first paint.

partoo.co costs a phone 1 ms of main-thread work and 364 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.

8 third-party services load with your homepage (Google Tag Manager, Clarity and Cloudflare and others), adding 626 KiB and 201 ms of main-thread time.

Polyfills for old browsers add 10 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.

5 long tasks block the main thread while loading, the longest for 147 ms. During a long task the page ignores taps.

41 KiB could be saved by minifying JavaScript.

1 image could be 16 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

About 14 KiB of CSS is downloaded but never applied on this page.

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.

Real visitors wait 5.4 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 4.7 s (75th percentile). Good is under 1.8 s.

Real visitors wait 3.3 s for your server to start answering (75th percentile). Good is under 800 ms.

The first text or image appears after 7.6 s on a phone. Good is under 1.8 s.

Your largest element takes 13.4 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “La grande école du business, du marketing, de la communicat…”.

The page becomes fully interactive after 13.5 s. Good is under 3.8 s.

Visually, the page fills in at 8.2 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 226 ms in total while the page loads. Good is under 200 ms.

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 144 ms to 133 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 2.4 s to 3.3 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 2.8 MB in 76 requests on a phone: scripts 1.1 MB (34), media 984 KiB (2) and images 417 KiB (15). Under 2 MB keeps phones on slow connections fast.

1 image further down the page (73 KiB) download before anyone scrolls to it. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 0.80 g of CO₂e: 96.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

5 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

All page content should be contained by landmarks: 1 element on the page fails this check, rated moderate by axe-core.

1 visible link has no text or label, so screen readers cannot say where it goes.

Elements with visible text labels do not have matching accessible names. (1 element).

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

The homepage links to 95 pages on iseg.fr and 8 external pages.

Your Organization JSON-LD is missing url, logo, sameAs (social profiles), description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

There is no https://www.iseg.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.iseg.fr/espace-entreprises, https://www.iseg.fr/documentation-ecole-communication, https://www.iseg.fr/candidature-a-liseg, https://www.iseg.fr/la-validation-des-acquis-de-lexperience-vae-a-liseg, https://www.iseg.fr/experiences-a-linternational and https://www.iseg.fr/quels-metiers-apres-une-ecole-de-communication and 3 others have no meta description, so Google writes the search snippet from whatever text it finds.

https://www.iseg.fr/nos-formations took over 3 s to send its HTML from our server.

We fetched 15 pages linked from your homepage (of 52 found) and read each the way a search engine does.

6 errors were logged to the browser console while the page loaded, for example “Error with Permissions-Policy header: Parse of permissions policy failed because of errors reported by structured heade…”.

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 testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

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

There is no form on the homepage, so every lead has to click through to another page first.

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 1,237 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Tag Manager and Microsoft Clarity (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 5 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 16 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.