bildindex.de

https://bildindex.de· First analyzed 09 May 2026· Updated 09 May 2026

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bildindex.de

Mobile

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Hosting Provider

Philipps-Universitaet Marburg

IP Address

137.248.186.100

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Marburg, Germany

ASN

AS680

Organization

Philipps-Universitaet Marburg

Server

WildFly/26

Nameservers

nsc3.schlundtech.de.nsa3.schlundtech.de.nsd3.schlundtech.de.nsb3.schlundtech.de.

Performance

Core Web Vitals

Weight

First Contentful Paint

7.0 s10%

Speed Index

9.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

19 KB

75 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

Philipps-Universitaet Marburg

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Fonts

Google Fonts

Analytics

Matomo

Platforms

Fly.iov26

SEO Analysis

D55/100

Meta Tags13/15

Content8/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images3/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

bildindex.debildindex.de

Bildindex der Kunst & Architektur - Startseite Bildindex

Das Webportal Bildindex der Kunst und Architektur macht Bilder und wissenschaftliche Erschließungsinformationen zu Bau- und Kunstwerken in Europa zugänglich,...

Description truncated.

Title Length56 chars

Recommended: 50-60 chars (~329px / 580px)

Description Length263 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (19/20) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

11 rules

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

F10/100

Bot Access

3/25

Machine Read.

4/25

Schema Data

0/25

Citation

3/25

AI Bot Access

0/14 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

header/footer

Text ratio:6%

Words:197

Token eff.:Too Short

Sections/1K:5.1

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

61/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

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

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 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.

63/100

A+

2 mg

CO₂e / view

18.9 KB

Page Weight

95%

Cleaner Than

New Visitor

3 mg

Returning (cached)

1 mg

Annual (10K/mo)

276 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

1 mg

Resource Breakdown

Images

7.1 KB

Fonts

823 B

HTML

11.0 KB

Green Hosting Not Verified

Philipps-Universitaet Marburg

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

58d

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

07.04.2026

Valid Until

06.07.2026

Subject Alternative Names (2)

*.bildindex.debildindex.de

SHA-256 Fingerprint

64:57:7F:F4:A4:0A:80:EA:10:31:62:5E:37:DC:A3:98:1A:76:89:4C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, pre-check=0, post-check=0, max-age=0)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

10967

content-type

text/html;charset=ISO-8859-1

date

Sat, 09 May 2026 10:13:55 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

bildindex.de

Last Updated

12.02.2026

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

69/100

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, maximum-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Arial + Signika

WCAG Partial

58/100

Readability

/30

17/30

14px · LH 1.43

Hierarchy

/20

8/20

WCAG

/25

14/25

1.36:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Arial

Sans

Body Font

Signika

Sans14px

Contrast Ratio

1.36:1

24 issues

Reading Comfort

Dual Sans-Serif

left aligned

15px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 24 elements below WCAG AA threshold (min 1.4:1).

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

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

GGoogle FontsFlesch 0

Color Palette

16 unique colors

4.96:1 AA Dark

#615c59

Other· 9.1%

#e1dfdd

Other· 6%

#013646

Accent· 12%

#0b647e

Accent· 7.8%

#fffffe

Primary· 7%

#1c292e

Secondary· 4.6%

#b9ac99

Secondary· 2.8%

#012331

Accent· 1.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bildindex.de(20)

Website Identity

bildindex.de

Location detected: 🇩🇪 Germanyvia tld

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Last analyzed: 09 May 2026 at 10:14

Historical Analysis & Change Tracking