Back to Search
zehnder.co.uk favicon

zehnder.co.uk

https://zehnder.co.uk· First analyzed 04 Jun 2026· Updated 04 Jun 2026
Export
zehnder.co.uk
Desktop screenshot of zehnder.co.uk
Mobile screenshot of zehnder.co.uk
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

13.225.35.40

Site Location

🇬🇧 Camberley, Surrey, United Kingdomvia schema_nap

Server Location

🇬🇷 Athens, Greece

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Apache

CDN

CloudFront

Nameservers

ns12.managed-ip.info.ns9.managed-ip.com.ns11.managed-ip.info.ns10.managed-ip.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
292 ms10%
Speed Index
380 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
20 KB
12 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

UI Components

1
Fancybox

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

B78/100
22
5
1
Meta Tags14/15
Content11/12
Headings7/8
Technical23/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social1/5
Freshness0/4
Mobile4/4
Indexability3/3
Z
zehnder.co.ukzehnder.co.uk

Indoor Climate Solutions | Zehnder Group UK Ltd

Creating healthy, comfortable commercial & living spaces with efficient radiators, heating & cooling ceilings, ventilation and indoor air quality solutions

Title Length47 chars

Recommended: 50-60 chars (~283px / 580px)

Description Length155 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (21/30) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

34/100
Needs Work
10 10

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
6/25
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:8%
Words:1,776
Token eff.:Optimal
Sections/1K:0.6
Depth:1/5

Structured Data

4 JSON-LD
Organization×1.1WebSiteBreadcrumbList

Citation Readiness

Opening Summary204w
Descriptive Headingsavg 4.3w
Canonical URL
Open Graph0/3
Twitter Card1/3
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.
C
68/100
10
Passed
3
Critical
2
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
5/15
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
2/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
82/100
A+
2 mg
CO₂e / view
20.2 KB
Page Weight
95%
Cleaner Than
New Visitor
2 mg
vs
Returning (cached)
1 mg
Annual (10K/mo)
240 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
1 mg
Resource Breakdown
HTML
20.2 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

46%Poor
Interactive

HTTPS

No WAF

195d

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

17.11.2025

Valid Until

16.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.zehnder-systems.deprodukter.zehnder.seproduits.zehnder.frwww.zehnder-systems.comwww.zehnder.co.ukacademy.zehnder-systems.chzehnder.esprodukter.zehnder.no+12 more

SHA-256 Fingerprint

5B:65:C4:20:A4:96:6E:35:A3:05:C8:7C:D6:28:59:4C:CD:9C:E0:38...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 2 Hours(max-age=9947)
content-encoding
📦 Gzip(gzip)
content-language
en-GB
content-length
20417
content-type
text/html; charset=utf-8
date
Thu, 04 Jun 2026 18:12:51 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

zehnder-co-uk.mail.protection.outlook.com

Domain Information

zehnder.co.uk

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
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
56/100
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, shrink-to-fit=no, user-scalable=no
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG AAA
74/100
Readability
/30
20/30

16px · LH --

Hierarchy
/20
16/20

2x ratio

WCAG
/25
24/25

9.4:1 min contrast

Performance
/25
14/25

1 font

Heading Font

Times New Roman

Serif32px

Body Font

Times New Roman

Serif16px

Contrast Ratio

9.4:1

WCAG AAA (≥7:1)

Reading Comfort

~40 CPL

Narrow lines
32px
h1
24px
h2
16px
h4
16px
p

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

❌ Very complex text: Flesch score 11/100. Consider shorter sentences and simpler words.

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

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

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 11

Color Palette

7 unique colors
Light
#ffffff
Primary· 30.199999999999996%
#e3001b
Accent· 67.19999999999999%
#df7c89
Accent· 0.8%
#9795d6
Secondary· 0.7%
#bcbce0
Secondary· 0.6%
#e5e5ed
Secondary· 0.6%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
CookiebotMid-Market

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

5 Resources

4
Scripts
1
Styles
3
Async
0
Defer

Top Script Sources

yu69sa.zehnder.co.uk(1)googletagmanager.com(1)consent.cookiebot.eu(1)local(1)

Website Identity

Zehnder Group UK Limited

Zehnder Group UK Limited

Organization
[email protected]
00441276605800
www.zehnder.co.uk/en/

Concept House, Watchmoor Point, Camberley, Surrey

GU15 3AD, Camberley, Surrey

United Kingdom

Location detected: 🇬🇧 United Kingdom, Camberley, Surreyvia schema_nap
📧 Microsoft 365en

Sponsored

Last analyzed: 04 Jun 2026 at 18:13

Historical Analysis & Change Tracking