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grimme-institut.de

https://grimme-institut.de· First analyzed 16 May 2026· Updated 16 May 2026
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grimme-institut.de
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Mobile

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Hosting Provider

IONOS (1&1)
ionos.com

IP Address

212.227.30.187

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Berlin, Germany

ASN

AS8560

Organization

De Rhr Bap Ngcs Public

Server

Apache

Nameservers

nsb5.schlundtech.de.nsd5.schlundtech.de.nsc5.schlundtech.de.nsa5.schlundtech.de.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
716 ms10%
Speed Index
931 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
45 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
TYPO3
Infrastructure
Hosting
IONOS (1&1)

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv1.11.3

UI Components

1
Slick Carousel

Web Servers

1
Apache

SEO Analysis

D46/100
11
8
4
Meta Tags7/15
Content7/12
Headings1/8
Technical12/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social1/5
Freshness0/4
Mobile4/4
Indexability3/3
G
grimme-institut.degrimme-institut.de

Grimme-Institut - Grimme-Institut

No description available for this page.

Title Length33 chars

Recommended: 50-60 chars (~208px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (20/32) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

3 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

Sponsored

AI & LLM Readiness

F30/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
0/25
Citation
8/25

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
nav
Text ratio:2%
Words:104
Token eff.:Too Short
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary245w
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
D
59/100
9
Passed
5
Critical
3
Warnings
Images & Alt Text
10/20
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
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
5 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
56/100
C
169 mg
CO₂e / view
1.6 MB
Page Weight
60%
Cleaner Than
New Visitor
193 mg
vs
Returning (cached)
97 mg
Annual (10K/mo)
20.3 kg
Emission Segments
Data Center
8 mg
Network
50 mg
Device
111 mg
Resource Breakdown
JavaScript
104.8 KB
Images
1.4 MB
CSS
110.5 KB
HTML
6.0 KB
Green Hosting Verified
IONOS SE
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

31%Critical
Interactive

HTTPS

No WAF

79d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

06.05.2026

Valid Until

04.08.2026

Subject Alternative Names (14)

grimme-akademie.degrimme-diskurs.degrimme-forschung.degrimme-institut.degrimme-medienbildung.degrimme-online-award.degrimme-preis.dewww.grimme-akademie.de+6 more

SHA-256 Fingerprint

08:B7:03:2E:97:8D:E4:07:F9:78:DE:8A:3C:24:CD:73:15:A0:98:4D...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-language
de
content-length
5862
content-type
text/html; charset=utf-8
date
Sat, 16 May 2026 23:05:46 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

grimmeinstitut-de01e.mail.protection.outlook.com

Domain Information

grimme-institut.de

Last Updated

16.02.2026

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
F
37/100
Not 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.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto

WCAG Partial
62/100
Readability
/30
18/30

16px · LH 1.30

Hierarchy
/20
8/20
WCAG
/25
19/25

4:1 min contrast

Performance
/25
17/25

System fonts

Heading Font

Roboto

Body Font

Roboto

Sans16px

Contrast Ratio

4:1

Below AA

Reading Comfort

Single Family

left aligned
16px
p

✅ Excellent readability: 16px 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 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 0 elements below WCAG AA threshold (min 4.0:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 0

Color Palette

11 unique colors
4:1 AA Large Light
#ffffff
Background· 34.4%
#7f7f7f
Other· 13.7%
#c25f4c
Primary· 8.7%
#b4403e
Secondary· 7.5%
#564846
Secondary· 7.3%
#dcab93
Accent· 6.4%
#efe9da
Secondary· 5.5%
#d78660
Accent· 4.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

19 Resources

10
Scripts
9
Styles
0
Async
0
Defer

Top Script Sources

local(9)ajax.googleapis.com(1)

Website Identity

grimme-institut.de

Location detected: 🇩🇪 Germanyvia tld
📧 Microsoft 365de-DE

Sponsored

Last analyzed: 16 May 2026 at 23:06

Historical Analysis & Change Tracking