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drk-blutspende.de

https://drk-blutspende.de· First analyzed 09 May 2026· Updated 09 May 2026
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drk-blutspende.de
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Mobile

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Hosting Provider

deltacity.NET GmbH & Co.

IP Address

91.190.229.221

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Emsdetten, Germany

ASN

AS42184

Organization

deltacity.NET GmbH & Co.

Server

Nginx

Nameservers

dns2.epag.net.ns01.deltacity.net.dns1.epag.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
654 ms10%
Speed Index
850 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.3 MB
30 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
Drupal
Infrastructure
Hosting
deltacity.NET GmbH & Co.

Technology Stack

5 Technologies Detected

UI Components

1
Swiper

Other

1
AOS (Animate On Scroll)

CSS Frameworks

1
Tailwind CSS

Analytics

1
Matomo

Web Servers

1
Nginx

SEO Analysis

D51/100
13
9
2
Meta Tags13/15
Content8/12
Headings3/8
Technical7/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
D
drk-blutspende.dedrk-blutspende.de

BlutspenderIn werden | DRK-Blutspendedienste

Informationen zur Blutspende und aktuelle Blutspendetermine beim DRK-Blutspendedienst. Jetzt BlutspenderIn werden!

Title Length44 chars

Recommended: 50-60 chars (~264px / 580px)

Description Length114 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (59/63) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Local SEO

Local Search Readiness

7/100
Poor
2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F35/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
8/25

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:1%
Words:626
Token eff.:Optimal
Sections/1K:16

Structured Data

No Schema

Citation Readiness

Opening Summary42w
Descriptive Headingsavg 4.1w
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...
Upgrade to view recommendations

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.
D
52/100
8
Passed
7
Critical
1
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
4/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
5 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
47/100
C
159 mg
CO₂e / view
1.3 MB
Page Weight
70%
Cleaner Than
New Visitor
181 mg
vs
Returning (cached)
91 mg
Annual (10K/mo)
19.0 kg
Emission Segments
Data Center
35 mg
Network
38 mg
Device
85 mg
Resource Breakdown
JavaScript
82.9 KB
Images
1020.6 KB
CSS
79.5 KB
HTML
100.2 KB
Green Hosting Not Verified
deltacity.NET GmbH & Co.
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

No WAF

194d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.11.2025

Valid Until

19.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.drk-blutspende.dedrk-blutspende.de

SHA-256 Fingerprint

67:AF:E5:EA:52:05:09:59:23:A6:72:B8:8F:BF:5F:22:F5:4E:C2:E0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 0s(max-age=0, private, must-revalidate)
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
date
Sat, 09 May 2026 03:33:19 GMT
etag
W/"9dd1b1db07067b375105e44fa97b755c"
feature-policy
camera 'none'; gyroscope 'none'; microphone 'none'; usb 'non...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

smail-del.dts-security.de

Domain Information

drk-blutspende.de

Last Updated

12.11.2020

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.
D
58/100
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Roboto

WCAG Partial
68/100
Readability
/30
25/30

16px · LH 1.56

Hierarchy
/20
8/20
WCAG
/25
13/25

1.22:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

Roboto

Sans

Body Font

Roboto

Sans16px

Contrast Ratio

1.22:1

5 issues

Reading Comfort

~35 CPL

Narrow lines
45px
h2
45px
h3
16px
h4
16px
p

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

✅ Optimal line spacing: 1.56 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 26/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.2:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Flesch 27

Color Palette

12 unique colors
Light
#ffffff
Background· 47.8%
#b10013
Primary· 11.5%
#352926
Secondary· 5.9%
#ebb2a2
Accent· 5.7%
#986d64
Secondary· 5.6%
#b89ea1
Secondary· 4.8%
#bf3749
Accent· 4.1%
#a9b3da
Secondary· 3.6%

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

7 Resources

6
Scripts
1
Styles
1
Async
0
Defer

Top Script Sources

unpkg.com(2)consent.cookiefirst.com(2)webanalytics.drk-blutspende.de(1)drk-blutspende.de(1)

Website Identity

drk-blutspende.de

08001194911
Location detected: 🇩🇪 Germanyvia tld

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Last analyzed: 09 May 2026 at 03:33

Historical Analysis & Change Tracking