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th-koeln.de

https://th-koeln.de· First analyzed 27 Apr 2026· Updated 27 Apr 2026
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th-koeln.de
Desktop screenshot of th-koeln.de
Mobile screenshot of th-koeln.de
Mobile

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Hosting Provider

Technische Hochschule Koeln

IP Address

139.6.10.199

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Cologne, Germany

ASN

AS680

Organization

Technische Hochschule Koeln

Server

Apache

Nameservers

ns-gwz.nz.fh-koeln.de.dns1.uni-koeln.de.dns-1.dfn.de.ns-iwz.nz.fh-koeln.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
557 ms10%
Speed Index
724 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.8 MB
85 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Technische Hochschule Koeln

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Fonts

1
Adobe Fonts (Typekit)

Web Servers

1
Apache

SEO Analysis

C63/100
18
7
1
Meta Tags7/15
Content12/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
T
th-koeln.deth-koeln.de

Startseite - TH Köln

Die TH Köln zählt zu den innovativsten Hochschulen für Angewandte Wissenschaften. Sie bietet ein inspirierendes Lern-, Arbeits- und Forschungsumfeld in den S...

Description truncated.
Title Length20 chars

Recommended: 50-60 chars (~119px / 580px)

Description Length225 chars

Recommended: 120-160 chars

Issues (1)

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

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

12,432 URLs

robots.txt

23 rules

Sitemap reference found

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

D44/100
Bot Access
20/25
Machine Read.
11/25
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:10%
Words:1,364
Token eff.:Optimal
Sections/1K:8.8
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary32w
Descriptive Headingsavg 5.2w
Canonical URL
Open Graph2/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
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Sponsored

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
82/100
14
Passed
2
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
12/15
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
13/15
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.
29/100
D
233 mg
CO₂e / view
1.8 MB
Page Weight
50%
Cleaner Than
New Visitor
267 mg
vs
Returning (cached)
133 mg
Annual (10K/mo)
28.0 kg
Emission Segments
Data Center
52 mg
Network
56 mg
Device
125 mg
Resource Breakdown
JavaScript
223.4 KB
Images
1.5 MB
CSS
70.1 KB
HTML
17.6 KB
Green Hosting Not Verified
Technische Hochschule Koeln
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

51%Poor
Interactive

HTTPS

No WAF

165d

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

10.10.2025

Valid Until

10.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

th-koeln.defh-koeln.dewww.fh-koeln.dewww.th-koeln.de

SHA-256 Fingerprint

6F:28:81:61:65:00:D6:38:57:83:5E:43:11:B7:45:B5:6B:C6:DF:93...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, no-store, must-revalidate)
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
17683
content-security-policy
frame-ancestors 'self' qa-cms-intern.th-koeln.de qa-cms-inte...
content-type
text/html; charset=UTF-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

smtp.intranet.fh-koeln.de

Domain Information

th-koeln.de

Last Updated

31.01.2022

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.
C
63/100
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
user-scalable=0, initial-scale=1.0, width=device-width
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Adobe Blank

WCAG Partial
61/100
Readability
/30
19/30

17px · LH 1.29

Hierarchy
/20
11/20

2.13x ratio

WCAG
/25
16/25

3.95:1 min contrast

Performance
/25
15/25

2 fonts · 1 req

Heading Font

Adobe Blank

Sans37px

Body Font

Adobe Blank

Sans17px

Contrast Ratio

3.95:1

1 issue

Reading Comfort

~39 CPL

Narrow lines
37px
h1
34px
h2
17px
p

✅ Excellent readability: 17px body text is ideal for all devices.

⚠️ Tight line spacing (1.29). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 21/100. Consider shorter sentences and simpler words.

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

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

AAdobe FontsFlesch 21

Color Palette

7 unique colors
Light
#e8e8e8
Background· 28.4%
#a58982
Secondary· 13.6%
#ffffff
Primary· 0%
#b63791
Accent· 11.3%
#503841
Secondary· 9.4%
#c1223b
Accent· 3%

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

16 Resources

13
Scripts
3
Styles
2
Async
0
Defer

Top Script Sources

local(9)static.etracker.com(1)use.typekit.net(1)code.etracker.com(1)etracker.de(1)

Website Identity

th-koeln.de

Location detected: 🇩🇪 Germanyvia tld
de

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Last analyzed: 27 Apr 2026 at 21:24

Historical Analysis & Change Tracking