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mpia.de

https://mpia.de· First analyzed 03 May 2026· Updated 03 May 2026
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mpia.de
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Mobile

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Hosting Provider

Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH

IP Address

134.76.31.205

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Göttingen, Germany

ASN

AS207592

Organization

Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH

Server

Apache

Nameservers

dns1.belwue.de.dns3.gwdg.de.dns1.gwdg.de.dns-3.dfn.de.+3 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
526 ms10%
Speed Index
684 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.4 MB
55 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH

Technology Stack

3 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Apache

SEO Analysis

C63/100
19
8
1
Meta Tags7/15
Content10/12
Headings3/8
Technical19/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
M
mpia.dempia.de

Startseite

Wie entstehen Sterne und Planeten? Welche Eigenschaften haben Planeten, die andere Sterne umkreisen als die Sonne? Beherbergt irgendein anderer Planet Leben?...

Description truncated.
Title Length10 chars

Recommended: 50-60 chars (~59px / 580px)

Description Length777 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

9 issues found

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Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

2 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

7/100
Poor
2 14 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

D43/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
13/25

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:697
Token eff.:Optimal
Sections/1K:10
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary283w
Descriptive Headingsavg 7.8w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
B
75/100
12
Passed
4
Critical
1
Warnings
Images & Alt Text
18/20
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
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
5/15
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.
52/100
C
175 mg
CO₂e / view
1.4 MB
Page Weight
60%
Cleaner Than
New Visitor
200 mg
vs
Returning (cached)
100 mg
Annual (10K/mo)
21.0 kg
Emission Segments
Data Center
39 mg
Network
42 mg
Device
94 mg
Resource Breakdown
JavaScript
132.3 KB
Images
678.9 KB
CSS
475.3 KB
Fonts
50.2 KB
HTML
75.3 KB
Green Hosting Not Verified
Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH
4 recommendations
  • •Carbon footprint recommendation preview...
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C

Security Score

66%Fair
Interactive

HTTPS

No WAF

194d

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/1.1

Valid From

13.11.2025

Valid Until

13.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

mpia.dewww.mpia.dehausderastronomie.infowww.hausderastronomie.infohausderastronomie.orgwww.hausderastronomie.orghda-hd.infowww.hda-hd.info+12 more

SHA-256 Fingerprint

F1:75:C9:4D:0F:F7:F4:ED:67:86:F1:AC:4B:CE:E3:41:27:74:3F:27...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 120s(max-age=120, public)
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self' https://statistik.mpg.de
content-type
text/html; charset=utf-8
date
Sun, 03 May 2026 09:02:00 GMT
etag
W/"638945d889012caf5a8c4872670b85d5"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

c1234.mx.srv.dfn.de
a1234.mx.srv.dfn.de
b1234.mx.srv.dfn.de

Domain Information

mpia.de

Last Updated

23.10.2022

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.
B
79/100
Mobile Friendly17 breakpoints
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=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
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Typography & Readability

Merriweather + Roboto

WCAG AAA
59/100
Readability
/30
12/30

12px · LH 1.70

Hierarchy
/20
7/20
WCAG
/25
20/25

7.74:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Merriweather

Serif

Body Font

Roboto

Sans12px

Contrast Ratio

7.74:1

WCAG AAA (≥7:1)

Reading Comfort

Serif Headlines + Sans Body

left aligned
34px
h2
22px
h3
22px
h4
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 7.7:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

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

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

Buy on MyFonts

Color Palette

6 unique colors
21:1 AAA Dark
#000000
Text· 43.4%
#ffffff
Text· 11.6%

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

10 Resources

8
Scripts
2
Styles
5
Async
3
Defer

Top Script Sources

local(7)statistik.mpg.de(1)

Website Identity

mpia.de

Location detected: 🇩🇪 Germanyvia tld
de

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Last analyzed: 03 May 2026 at 09:02

Historical Analysis & Change Tracking