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hlrs.de

https://hlrs.de· First analyzed 14 May 2026· Updated 14 May 2026
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hlrs.de
Desktop screenshot of hlrs.de
Mobile screenshot of hlrs.de
Mobile

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Hosting Provider

UNI-STUTTGART

IP Address

141.58.2.1

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Stuttgart, Germany

ASN

AS553

Organization

UNI-STUTTGART

Server

Apache

Nameservers

dns-srv3.uni-stuttgart.net.dns-srv1.uni-stuttgart.de.dns5.belwue.de.dns3.belwue.de.+2 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
536 ms10%
Speed Index
697 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.6 MB
40 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
TYPO3
Infrastructure
Hosting
UNI-STUTTGART

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Apachev2.4.67

SEO Analysis

C69/100
20
6
1
Meta Tags10/15
Content12/12
Headings7/8
Technical15/21
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social1/5
Freshness2/4
Mobile4/4
Indexability3/3
H
hlrs.dehlrs.de

HLRS High Performance Computing Center Stuttgart: Home

No description available for this page.

Title Length54 chars

Recommended: 50-60 chars (~336px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

7 issues found

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Local SEO

Local Search Readiness

25/100
Needs Work
7 9 2

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AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
15/25

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:6%
Words:853
Token eff.:Optimal
Sections/1K:32.8
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary119w
Descriptive Headingsavg 4.4w
Canonical URL
Open Graph0/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
A
80/100
11
Passed
3
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
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
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
31/100
E
327 mg
CO₂e / view
2.6 MB
Page Weight
30%
Cleaner Than
New Visitor
374 mg
vs
Returning (cached)
187 mg
Annual (10K/mo)
39.3 kg
Emission Segments
Data Center
73 mg
Network
79 mg
Device
176 mg
Resource Breakdown
JavaScript
80.4 KB
Images
96.9 KB
CSS
2.4 MB
HTML
11.3 KB
Green Hosting Not Verified
UNI-STUTTGART
4 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

81%Very Good
Static / Informational

HTTPS

No WAF

43d

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

28.03.2026

Valid Until

26.06.2026

Subject Alternative Names (2)

hlrs.dewww.hlrs.de

SHA-256 Fingerprint

CA:AF:6A:D0:6B:2A:A8:F1:C6:F9:10:D4:A5:34:AD:92:3D:9F:50:19...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-store, max-age=0)
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-language
en-US
content-length
11307
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

mgw.hlrs.de

Domain Information

hlrs.de

Last Updated

13.05.2025

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
C
66/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Overpass

WCAG Partial
72/100
Readability
/30
23/30

18px · LH 1.50

Hierarchy
/20
15/20

2.5x ratio

WCAG
/25
16/25

1:1 min contrast

Performance
/25
18/25

1 font · 5 req

Heading Font

Overpass

Sans45px

Body Font

Overpass

Sans18px

Contrast Ratio

1:1

7 issues

Reading Comfort

~33 CPL

Narrow lines
45px
h1
36px
h2
32px
h3
18px
p

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 34

Color Palette

8 unique colors
Light
#ffffff
Background· 39.400000000000006%
#3695ca
Primary· 22.4%
#3e639d
Secondary· 15.6%
#254d8d
Accent· 9.4%
#b1d2db
Secondary· 4.4%
#5c8bb4
Secondary· 4.2%
#f5eaa5
Accent· 2.8%
#f5f5e3
Secondary· 1.9000000000000001%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

5 Resources

3
Scripts
2
Styles
2
Async
0
Defer

Top Script Sources

local(2)matomo.hlrs.de(1)

Website Identity

hlrs.de

+4971168587269
Location detected: 🇩🇪 Germanyvia phone
en-us-gb

Social Profiles

LinkedInYouTubeBluesky

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Last analyzed: 14 May 2026 at 02:56

Historical Analysis & Change Tracking

hlrs.de Technology Stack - Built With Tailwind CSS, Font Awesome, Matomo, Apache | StackOptic | StackOptic