mnu.de

https://mnu.de· First analyzed 13 May 2026· Updated 13 May 2026

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mnu.de

Mobile

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Hosting Provider

IONOS (1&1)

ionos.com

IP Address

217.160.0.179

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Essen, Germany

ASN

AS8560

Organization

Ionos Inf

Server

Apache

Nameservers

ns1059.ui-dns.de.ns1059.ui-dns.com.ns1059.ui-dns.org.ns1059.ui-dns.biz.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.0 s10%

Speed Index

1.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

27.7 MB

50 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Joomla!

Technology Stack

4 Technologies Detected

Libraries

Other

CSS Frameworks

Web Servers

SEO Analysis

C69/100

Meta Tags12/15

Content11/12

Headings3/8

Technical19/25

E-E-A-T5/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

mnu.demnu.de

MNU - Verband zur Förderung des MINT-Unterrichts – MNU - Startseite

Der „MNU - Verband zur Förderung des MINT-Unterrichts“ tritt seit 1891 für Qualität und Fortschritt in den mathematischen und naturwissenschaftlichen Schulfäche

Title Length67 chars

Recommended: 50-60 chars (~417px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (14/19) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: standard

56 URLs

robots.txt

16 rules

Local SEO

Local Search Readiness

18/100

Poor

5 12

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

Sponsored

AI & LLM Readiness

D48/100

Bot Access

20/25

Machine Read.

12/25

Schema Data

6/25

Citation

10/25

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

blockquotesdef. listsnavheader/footer

Text ratio:12%

Words:683

Token eff.:Optimal

Sections/1K:8.8

Depth:4/5

Structured Data

3 JSON-LD

Article×1.2(min)microdataOrganization×1.1WebSite

Citation Readiness

Opening Summary28w

Descriptive Headingsavg 2.5w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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

13/20

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

Forms & Inputs

10/15

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

7/15

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

3 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.

36/100

2.87 g

CO₂e / view

27.7 MB

Page Weight

Cleaner Than

New Visitor

3.27 g

Returning (cached)

1.64 g

Annual (10K/mo)

343.9 kg

Emission Segments

Data Center

140 mg

Network

842 mg

Device

1.88 g

Resource Breakdown

JavaScript

105.8 KB

Images

27.5 MB

CSS

78.6 KB

HTML

10.4 KB

Green Hosting Verified

IONOS (1&1)

Provider Match

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

39%Critical

Interactive

HTTPS

No WAF

33d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

18.03.2026

Valid Until

16.06.2026

Subject Alternative Names (1)

www.mnu.de

SHA-256 Fingerprint

91:44:17:BF:2A:1D:57:35:51:63:3C:56:6F:53:A7:15:9D:4F:CD:6F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Wed, 13 May 2026 22:08:35 GMT

expires

Wed, 17 Aug 2005 00:00:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mx00.ionos.de

mx01.ionos.de

Domain Information

mnu.de

Last Updated

16.08.2018

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

60/100

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,initial-scale=1,maximum-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Titillium Web

WCAG Partial

57/100

Readability

/30

18/30

18px · LH 1.30

Hierarchy

/20

7/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

15/25

1 font · 3 req

Heading Font

Titillium Web

Sans

Body Font

Titillium Web

Sans18px

Contrast Ratio

1:1

9 issues

Reading Comfort

~42 CPL

Narrow lines

36px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Tight line spacing (1.30). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 8/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 8

Color Palette

15 unique colors

19.74:1 AAA Light

#ffffff

Background· 15.399999999999999%

#0c0a0b

Text· 6.7%

#d54d1d

Primary· 9.5%

#cb4108

Accent· 8.4%

#25282d

Secondary· 7.5%

#99a9ac

Secondary· 6%

#e07127

Accent· 4.8%

#a76a51

Secondary· 4.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(16)

Website Identity

MNU - Verband zur Förderung des MINT-Unterrichts

Organization

Der „MNU - Verband zur Förderung des MINT-Unterrichts“ tritt seit 1891 für Qualität und Fortschritt in den mathematischen und naturwissenschaftlichen Schulfäche

info@mnu.de

www.mnu.de/

Location detected: 🇩🇪 Germanyvia tld

de-de

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Last analyzed: 13 May 2026 at 22:08

Historical Analysis & Change Tracking