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tui-blue.com

https://tui-blue.com· First analyzed 13 May 2026· Updated 13 May 2026
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tui-blue.com
Desktop screenshot of tui-blue.com
Mobile screenshot of tui-blue.com
Mobile

Sponsored

Hosting Provider

Plcdn EU

IP Address

82.98.126.16

Site Location

🇬🇧 United Kingdomvia phone

Server Location

🇩🇪 Mörfelden-Walldorf, Germany

ASN

AS12306

Organization

Plcdn EU

Server

plcache.edge

CDN

Varnish

Nameservers

pdns109.ultradns.com.pdns109.ultradns.net.pdns109.ultradns.org.pdns109.ultradns.biz.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
862 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.8 MB
156 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

JAMstack
🔀 Hybrid
Frontend
Framework
Astro
CMS
Ghost
Infrastructure
Hosting
Plcdn EU
CDN
Varnish

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Astro

Libraries

1
jQueryv3.5.1

CSS Frameworks

1
Tailwind CSS

Other

1
Optimizely

SEO Analysis

B75/100
20
7
1
Meta Tags15/15
Content6/12
Headings7/8
Technical25/25
E-E-A-T2/7
Images2/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
T
tui-blue.comtui-blue.com

TUI BLUE | Official Website | Hotels designed for you

TUI BLUE ☀ is a new kind of hotel: tailored to your individual tastes ✔ Full of possibilities to make your holiday unique ➡ Book here on the official website!

Title Length53 chars

Recommended: 50-60 chars (~314px / 580px)

Description Length158 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (41/45) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

18 rules

Sitemap reference found

Local SEO

Local Search Readiness

31/100
Needs Work
9 10

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AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
7/25
Citation
7/25

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:2%
Words:2,006
Token eff.:Optimal

Structured Data

2 JSON-LD
Organization×1.1WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary
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 (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.
C
69/100
10
Passed
5
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
6/20
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
7/15
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.
2 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.
38/100
F
498 mg
CO₂e / view
4.8 MB
Page Weight
15%
Cleaner Than
New Visitor
570 mg
vs
Returning (cached)
285 mg
Annual (10K/mo)
59.8 kg
Emission Segments
Data Center
24 mg
Network
146 mg
Device
328 mg
Resource Breakdown
JavaScript
763.9 KB
Images
3.9 MB
CSS
33.9 KB
Fonts
57.7 KB
HTML
76.4 KB
Other
3.1 KB
Green Hosting Verified
Plus.line AG
GWF Verified
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

86%Very Good
Static / Informational

HTTPS

No WAF

29d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.06.2025

Valid Until

11.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

www.tui-blue.comblog.tui-blue.comspa.tui-blue.comtui-blue.com

SHA-256 Fingerprint

A7:7E:20:47:CE:3C:91:11:8E:EE:D0:67:22:8C:D5:E7:5F:4C:C9:E7...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
age
98
content-encoding
⚡ Brotli(br)
content-length
77915
content-type
text/html
date
Wed, 13 May 2026 12:47:11 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

tuiblue-com0i.mail.protection.outlook.com

Domain Information

tui-blue.com

Domain Age
11y 10m

Created

25.06.2014

Expires

25.06.2026

Last Updated

06.03.2026

Registrar

Key-Systems GmbH

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
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
79/100
Mobile Friendly197 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, minimum-scale=1, minimal-ui
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

tui-type-lt-bold + tui-type-lt-regular

WCAG Partial
56/100
Readability
/30
22/30

18px · LH 1.67

Hierarchy
/20
6/20
WCAG
/25
14/25

2.84:1 min contrast

Performance
/25
14/25

System fonts

Heading Font

tui-type-lt-bold

Sans

Body Font

tui-type-lt-regular

Sans18px

Contrast Ratio

2.84:1

2 issues

Reading Comfort

~34 CPL

Narrow lines
40px
h2
32px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.8:1).

❌ 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).

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

Buy on MyFontsFlesch 49

Color Palette

12 unique colors
4.36:1 AA Large Light
#ffffff
Background· 33.5%
#7f786f
Other· 5.7%
#04265b
Primary· 10.4%
#bea48a
Secondary· 8.8%
#a79783
Secondary· 8.3%
#2e96c8
Accent· 7.1%
#5fa0c5
Secondary· 6.6%
#117cad
Accent· 4.9%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

1
OptimizelyEnterprise

Experimentation and conversion optimization

2

Categories

2

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

21 Resources

20
Scripts
1
Styles
12
Async
4
Defer

Top Script Sources

tags.tiqcdn.com(5)tui-blue.com(3)googletagmanager.com(2)local(2)gstatic.com(1)

Website Identity

TUI BLUE

TUI BLUE

Organization
international.service@tui-blue.com
+442045780909
www.tui-blue.com/
11 years old
Location detected: 🇬🇧 United Kingdomvia phone
Key-Systems GmbH📧 Microsoft 365en-EN

Sponsored

Last analyzed: 13 May 2026 at 12:49

Historical Analysis & Change Tracking