konzerthaus-dortmund.de

https://konzerthaus-dortmund.de· First analyzed 24 May 2026· Updated 24 May 2026

Export

Mobile

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Hosting Provider

Hetzner

hetzner.com

IP Address

213.133.105.5

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns1.your-server.de.ns3.second-ns.de.ns.second-ns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

507 ms10%

Speed Index

659 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.6 MB

80 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Hetzner

Technology Stack

9 Technologies Detected

Libraries

Analytics

Advertising

Google Ads Microsoft Advertising

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

C61/100

Meta Tags12/15

Content11/12

Headings3/8

Technical11/21

E-E-A-T0/7

Images5/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile3/4

Indexability3/3

konzerthaus-dortmund.dekonzerthaus-dortmund.de

Willkommen | Konzerthaus Dortmund

Das Konzerthaus Dortmund präsentiert Klassik, Jazz und Pop in herausragender Akustik. Informationen zu Programm und Online-Tickets.

Title Length33 chars

Recommended: 50-60 chars (~207px / 580px)

Description Length131 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

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Local SEO

Local Search Readiness

17/100

Poor

5 10 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

F39/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

9/25

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

navheader/footer

Text ratio:9%

Words:1,619

Token eff.:Optimal

Sections/1K:6.2

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary64w

Descriptive Headingsavg 2.1w

Canonical URL

Open Graph0/3

Twitter Card1/3

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.

76/100

Passed

Critical

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

13/15

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

8/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

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.

31/100

678 mg

CO₂e / view

6.6 MB

Page Weight

Cleaner Than

New Visitor

774 mg

Returning (cached)

387 mg

Annual (10K/mo)

81.3 kg

Emission Segments

Data Center

33 mg

Network

199 mg

Device

445 mg

Resource Breakdown

JavaScript

189.6 KB

Images

2.8 MB

CSS

701.1 KB

HTML

26.6 KB

Other

2.9 MB

Green Hosting Verified

Hetzner Online GmbH

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

55%Poor

Critical / Transactional

HTTPS

No WAF

170d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.04.2026

Valid Until

10.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

konzerthaus-dortmund.dewww.konzerthaus-dortmund.de

SHA-256 Fingerprint

68:87:CC:57:5C:1D:14:E7:59:78:AA:55:2C:A3:36:5C:48:46:D0:5E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src * data: blob: 'self';script-src *.konzerthaus-do...

content-type

text/html; charset=UTF-8

date

Sun, 24 May 2026 18:28:50 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

dedi1092.your-server.de

Domain Information

konzerthaus-dortmund.de

Last Updated

12.04.2011

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

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.

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

width=device-width, initial-scale=1

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

gt-super + walsheim

WCAG AAA

68/100

Readability

/30

23/30

22px · LH 1.40

Hierarchy

/20

8/20

WCAG

/25

24/25

8.91:1 min contrast

Performance

/25

13/25

2 fonts · 4 req

Heading Font

gt-super

Sans

Body Font

walsheim

Sans22px

Contrast Ratio

8.91:1

WCAG AAA (≥7:1)

Reading Comfort

~43 CPL

Narrow lines

35px

24px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 27/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.9:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)Flesch 27

Color Palette

9 unique colors

20.03:1 AAA Light

#ffffff

Background· 43.699999999999996%

#080808

Text· 12.399999999999999%

#095b72

Primary· 9.3%

#29231f

Text· 6.2%

#a2c7d2

Secondary· 4.1%

#2e474d

Secondary· 4.1%

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Social Media

ShareThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)googletagmanager.com(2)bat.bing.com(2)portal.safe-port.cloud(1)

Website Identity

konzerthaus-dortmund.de

info@konzerthaus-dortmund.de

023122696200

Location detected: 🇩🇪 Germanyvia tld

Social Profiles

Facebook Instagram YouTube Threads

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Last analyzed: 24 May 2026 at 18:29

Historical Analysis & Change Tracking