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blutspende.de

https://blutspende.de· First analyzed 10 May 2026· Updated 10 May 2026
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blutspende.de
Desktop screenshot of blutspende.de
Mobile screenshot of blutspende.de
Mobile

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Hosting Provider

deltacity.NET GmbH & Co.

IP Address

91.190.229.245

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Emsdetten, Germany

ASN

AS42184

Organization

deltacity.NET GmbH & Co.

Server

Nginx

Nameservers

ns.comback.de.ns2.comback.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
575 ms10%
Speed Index
748 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
354 KB
15 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Progressive Web App

Web Manifest

Technology Stack

5 Technologies Detected

Other

1
AOS (Animate On Scroll)

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Nginx

SEO Analysis

C62/100
18
7
1
Meta Tags5/15
Content3/12
Headings5/8
Technical24/25
E-E-A-T2/7
Images4/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile4/4
Indexability3/3
B
blutspende.deblutspende.de

DRK-Blutspendedienste | DRK-Blutspendedienst Baden-Württemberg – He...

Bundesweite Verteilerseite

Title truncated.
Title Length71 chars

Recommended: 50-60 chars (~434px / 580px)

Description Length26 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (71 chars, ~434px). Will be truncated in search results.

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

565 URLs

565 sub-sitemaps

robots.txt

53 rules

Local SEO

Local Search Readiness

20/100
Needs Work
5 12

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AI & LLM Readiness

F36/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
2/25
Citation
10/25

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
Text ratio:0%
Words:143
Token eff.:Too Short

Structured Data

1 JSON-LD
Organization×1.1

Citation Readiness

Opening Summary49w
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
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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.
B
74/100
10
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
14/20
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
1/15
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.
55/100
A
44 mg
CO₂e / view
354.3 KB
Page Weight
90%
Cleaner Than
New Visitor
50 mg
vs
Returning (cached)
25 mg
Annual (10K/mo)
5.3 kg
Emission Segments
Data Center
10 mg
Network
11 mg
Device
24 mg
Resource Breakdown
JavaScript
62.9 KB
Images
30.6 KB
CSS
182.8 KB
HTML
78.0 KB
Green Hosting Not Verified
deltacity.NET GmbH & Co.
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

No WAF

10d

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

20.05.2025

Valid Until

20.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.blutspende.de

SHA-256 Fingerprint

B2:3A:F0:FF:BF:46:78:5A:9C:B6:7C:3B:D4:96:45:C1:F6:C8:67:D5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 6 Hours(max-age=21600, public)
content-encoding
📦 Gzip(gzip)
content-language
de
content-type
text/html; charset=UTF-8
date
Sun, 10 May 2026 12:33:41 GMT
etag
W/"1778375704"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (2)

mail3.blutspende.de
mail4.blutspende.de

Domain Information

blutspende.de

Last Updated

13.01.2017

DNSSEC
Not Enabled

Privacy & Compliance

CookieFirst

Cookie Consent Banner
CookieFirst
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: CookieFirst
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
60/100
Mobile Friendly
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=1.0
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto

WCAG AA
81/100
Readability
/30
24/30

16px · LH 1.50

Hierarchy
/20
16/20

2x ratio

WCAG
/25
22/25

4.91:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

Roboto

Sans32px

Body Font

Roboto

Sans16px

Contrast Ratio

4.91:1

WCAG AA (≥4.5:1)

Reading Comfort

~44 CPL

Narrow lines
32px
h1
25px
h3
16px
h4
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.9:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Flesch 18

Color Palette

6 unique colors
2.93:1 Fail Light
#f9f9f9
Background· 84.5%
#919395
Other· 2.9%
#e11228
Primary· 3.7%
#c6a7ab
Secondary· 3.4%
#a02f3d
Accent· 1%

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

6 Resources

5
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

local(3)consent.cookiefirst.com(2)

Website Identity

DRK-Blutspendedienst Baden-Württemberg – Hessen

DRK-Blutspendedienst Baden-Württemberg – Hessen

Organization
08001194911
www.blutspende.de
Location detected: 🇩🇪 Germanyvia tld
de

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Last analyzed: 10 May 2026 at 12:33

Historical Analysis & Change Tracking