theaterheidelberg.de

https://theaterheidelberg.de· First analyzed 28 May 2026· Updated 28 May 2026

Export

Mobile

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Hosting Provider

Hetzner

hetzner.com

IP Address

78.46.6.154

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

dns3.belwue.de.dns1.belwue.de.dns5.belwue.de.

Performance

Core Web Vitals

Weight

First Contentful Paint

887 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.3 MB

30 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Hetzner

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Frameworks

Libraries

Other

Other

CSS Frameworks

Analytics

Web Servers

SEO Analysis

B70/100

Meta Tags10/15

Content12/12

Headings8/8

Technical15/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

theaterheidelberg.detheaterheidelberg.de

Theater und Orchester Heidelberg

The Theater und Orchester Heidelberg is a theatre with five sections: music theatre, dance, drama, young theatre and concerts, and performs on various stages...

Description truncated.

Title Length32 chars

Recommended: 50-60 chars (~196px / 580px)

Description Length325 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (8/10) — critical for accessibility and SEO

7 issues found

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Crawlability

Sitemap

Type: standard

1,208 URLs

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

6/100

Poor

2 13 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

D44/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

11/25

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:7%

Words:859

Token eff.:Optimal

Sections/1K:4.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary39w

Descriptive Headingsavg 2w

Canonical URL

Open Graph3/3

Twitter Card3/3

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.

82/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

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

6/15

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.

51/100

239 mg

CO₂e / view

2.3 MB

Page Weight

30%

Cleaner Than

New Visitor

274 mg

Returning (cached)

137 mg

Annual (10K/mo)

28.7 kg

Emission Segments

Data Center

12 mg

Network

70 mg

Device

157 mg

Resource Breakdown

JavaScript

1.4 MB

Images

723.6 KB

CSS

218.1 KB

HTML

10.5 KB

Green Hosting Verified

Hetzner Online GmbH

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

187d

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

02.12.2025

Valid Until

01.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

theaterheidelberg.dewww.theaterheidelberg.de

SHA-256 Fingerprint

E1:4F:E5:34:AD:E7:38:68:74:1C:29:84:C4:2C:5E:E4:A8:D5:B7:B8...

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-type

text/html; charset=utf-8

date

Thu, 28 May 2026 13:48:17 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

pragma

no-cache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx4.eventim.de

Domain Information

theaterheidelberg.de

Last Updated

05.08.2017

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

76/100

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...

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Typography & Readability

Scto

WCAG Partial

61/100

Readability

/30

16/30

35px · LH 1.00

Hierarchy

/20

12/20

0.56x ratio · ✓ H1→H6

WCAG

/25

16/25

1:1 min contrast

Performance

/25

17/25

1 font · 2 req

Heading Font

Scto

Sans19px

Body Font

Scto

Sans35px

Contrast Ratio

1:1

3 issues

Reading Comfort

~39 CPL

Narrow lines

19px

58px

35px

✅ Excellent readability: 35px body text is ideal for all devices.

⚠️ Tight line spacing (1.00). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsVariable FontsFluid TypeFlesch 42

Color Palette

11 unique colors

12.63:1 AAA Light

#ffffff

Primary· 36.6%

#333333

Other· 18.200000000000003%

#030509

Primary· 11.9%

#ffff63

Accent· 4.7%

#1b232a

Secondary· 4.3%

#fbfb83

Accent· 0.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)stats.theaterheidelberg.de(1)

Website Identity

theaterheidelberg.de

Location detected: 🇩🇪 Germanyvia tld

Social Profiles

Facebook Instagram YouTube

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Last analyzed: 28 May 2026 at 13:48

Historical Analysis & Change Tracking