education.lu

https://education.lu· First analyzed 30 May 2026· Updated 30 May 2026

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education.lu

Mobile

Sponsored

Hosting Provider

Fondation RESTENA

IP Address

158.64.75.17

Site Location

🇱🇺 Luxembourgvia tld

Server Location

🇱🇺 Steinsel, Luxembourg

ASN

AS2602

Organization

Fondation RESTENA

Nameservers

nsp.restena.lu.ns1.restena.lu.ns2.restena.lu.ns3.restena.lu.+1 more

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 MB

145 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

DNN (DotNetNuke)

Infrastructure

Hosting

Fondation RESTENA

Technology Stack

13 Technologies Detected

Libraries

CSS Frameworks

Analytics

UI Components

Icon Libraries

Fonts

Tag Managers

Customer Support

SEO Analysis

D51/100

Meta Tags4/15

Content11/12

Headings3/8

Technical14/25

E-E-A-T0/7

Images5/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile2/4

Indexability3/3

education.lueducation.lu

www.education.lu

No description available for this page.

Title Length16 chars

Recommended: 50-60 chars (~98px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1

11 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

5 rules

Local SEO

Local Search Readiness

10/100

Poor

3 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F28/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

7/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:16%

Words:5,769

Token eff.:Excessive

Structured Data

No Schema

Citation Readiness

Opening Summary52w

Descriptive Headingsavg 4w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

74/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

11/100

379 mg

CO₂e / view

3.0 MB

Page Weight

30%

Cleaner Than

New Visitor

433 mg

Returning (cached)

217 mg

Annual (10K/mo)

45.5 kg

Emission Segments

Data Center

85 mg

Network

91 mg

Device

203 mg

Resource Breakdown

JavaScript

532.1 KB

Images

842.1 KB

CSS

1.6 MB

Fonts

2.1 KB

HTML

55.7 KB

Green Hosting Not Verified

Fondation RESTENA

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

40%Poor

Critical / Transactional

HTTPS

No WAF

108d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.09.2025

Valid Until

15.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

portal.education.luwww.education.lu

SHA-256 Fingerprint

0E:22:60:26:90:84:4E:79:DA:7F:E5:AB:1E:CB:26:03:8F:D3:03:B8...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache,no-cache)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' https://*.education.lu;, object-src '...

content-type

text/html; charset=utf-8

date

Sat, 30 May 2026 01:46:41 GMT

expires

-1

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

smtpgate3.restena.lu

smtpgate1.restena.lu

smtpgate2.restena.lu

Domain Information

education.lu

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

62/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width,height=device-height, minimum-scale=1.0, maximum-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto Condensed + Roboto

WCAG AA

66/100

Readability

/30

25/30

16px · LH 1.80

Hierarchy

/20

8/20

WCAG

/25

19/25

5.39:1 min contrast

Performance

/25

14/25

2 fonts · 11 req

Heading Font

Roboto Condensed

Sans

Body Font

Roboto

Sans16px

Contrast Ratio

5.39:1

WCAG AA (≥4.5:1)

Reading Comfort

~38 CPL

Narrow lines

24px

28px

24px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.4:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

⚠️ High font requests: 11 font files loaded. Consider variable fonts or subsetting.

GGoogle Fonts Buy on MyFontsFlesch 66

Color Palette

6 unique colors

6.64:1 AA Light

#f5f5f5

Background· 65.9%

#5b555c

Other· 5.1%

#d0cbc4

Primary· 5.8%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(17)googletagmanager.com(1)cdn.jsdelivr.net(1)dnnapi.com(1)

Website Identity

education.lu

[email protected]

Location detected: 🇱🇺 Luxembourgvia tld

en-US

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Last analyzed: 30 May 2026 at 01:47

Historical Analysis & Change Tracking