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coolblue.de

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

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

3.164.68.6

Site Location

🇩🇪 Germanyvia tld

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

CloudFront

CDN

CloudFront

Nameservers

ns-842.awsdns-41.net.ns-1047.awsdns-02.org.ns-1871.awsdns-41.co.uk.ns-27.awsdns-03.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
596 ms10%
Speed Index
775 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
229 KB
65 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Infrastructure
Platform
AWS CloudFront
CDN
CloudFront

Technology Stack

9 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Crazy Egg

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Other

1
Optimizely

Reviews

1
Trustpilot

CDN

1
Amazon CloudFront

SEO Analysis

A80/100
24
5
1
Meta Tags12/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
C
coolblue.decoolblue.de

Coolblue - Alles für ein Lächeln

Heute bestellt, morgen kostenlos mit einem Lächeln geliefert. Kostenlose Rückgabe. Kompetenter Kundendienst. Kundenbewertung 4.7/5.

Title Length32 chars

Recommended: 50-60 chars (~185px / 580px)

Description Length131 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (22/39) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

642 URLs

642 sub-sitemaps

robots.txt

311 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

18/100
Poor
5 12 1

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

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
7/25
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
nav
Text ratio:1%
Words:1,468
Token eff.:Optimal
Sections/1K:0.7
Depth:1/5

Structured Data

3 JSON-LD
Organization×1.1WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary522w
Descriptive Headingsavg 2.3w
Canonical URL
Open Graph2/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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.
A
87/100
15
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
11/15
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.
1 recommendation
  • •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.
77/100
A+
23 mg
CO₂e / view
228.7 KB
Page Weight
95%
Cleaner Than
New Visitor
26 mg
vs
Returning (cached)
13 mg
Annual (10K/mo)
2.8 kg
Emission Segments
Data Center
1 mg
Network
7 mg
Device
15 mg
Resource Breakdown
HTML
228.7 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

64%Fair
Interactive

HTTPS

No WAF

276d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.01.2026

Valid Until

10.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.coolblue.de

SHA-256 Fingerprint

7E:C8:DD:1E:56:92:9F:F5:16:0C:8B:5B:28:44:33:0D:51:F2:45:BA...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self'; report-uri https://3533eaa516fe10a59...
content-type
text/html; charset=utf-8
cross-origin-opener-policy
same-origin-allow-popups
date
Sun, 10 May 2026 15:53:10 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt4.aspmx.l.google.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com
aspmx.l.google.com

+1 more

Domain Information

coolblue.de

Last Updated

24.06.2020

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Privacy policy page linked
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.
B
76/100
Mobile Friendly93 breakpoints
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...
Upgrade to view recommendations

Typography & Readability

Times New Roman + Open Sans

WCAG AAA
77/100
Readability
/30
20/30

16px · LH --

Hierarchy
/20
19/20

2x ratio · ✓ H1→H6

WCAG
/25
24/25

9.4:1 min contrast

Performance
/25
14/25

2 fonts

Heading Font

Times New Roman

Serif32px

Body Font

Open Sans

Sans16px

Contrast Ratio

9.4:1

WCAG AAA (≥7:1)

Reading Comfort

~54 CPL

Optimal (45–75)
32px
h1
16px
h2
16px
h3
16px
p

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

✅ Optimal line length: ~54 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 29/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.4:1).

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

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

Buy on MyFontsFlesch 29

Color Palette

6 unique colors
3.92:1 AA Large Light
#ffffff
Background· 84.7%
#7c8189
Other· 4.5%
#0090e3
Primary· 0%
#a7c2c6
Secondary· 3.9%
#1f2028
Secondary· 3.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

21 Resources

20
Scripts
1
Styles
20
Async
0
Defer

Top Script Sources

assets.coolblue.nl(20)

Website Identity

Coolblue

www.coolblue.de
Location detected: 🇩🇪 Germanyvia tld
📧 Google Workspacede

Social Profiles

YouTube

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Last analyzed: 10 May 2026 at 15:53

Historical Analysis & Change Tracking