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merten.de

https://merten.de· First analyzed 24 May 2026· Updated 24 May 2026
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merten.de
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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

34.227.236.7

Site Location

🇩🇪 Germanyvia tld

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

CDN

Akamai

WAF

Akamai

Nameservers

nsc.perf1.com.nsb.perf1.com.nsa.perf1.fr.

Performance

84

Core Web Vitals

Weight

First Contentful Paint
1.9 s10%
Speed Index
2.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
8.8 MB
192 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
TYPO3
Infrastructure
Hosting
Amazon Web Services (AWS)
CDN
Akamai

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

11 Technologies Detected

UI Components

3
Slick CarouselOwl CarouselFancybox

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Facebook Pixel

Libraries

1
jQueryv3.7.1

Other

1
lazysizes

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

SEO Analysis

C66/100
17
8
1
Meta Tags12/15
Content10/12
Headings5/8
Technical16/21
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
M
merten.demerten.de

Lösungen für intelligente Gebäude

Spezialist für Smart Home & Gebäudesystemtechnik. Merten optimiert den Verbrauch, erhöht die Sicherheit und bietet maximalen Komfort – im Betrieb & zuhause.

Title Length33 chars

Recommended: 50-60 chars (~198px / 580px)

Description Length156 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (173/186) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Local SEO

Local Search Readiness

4/100
Poor
2 14 2

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

Sponsored

AI & LLM Readiness

D44/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
1/25
Citation
13/25

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:4%
Words:2,268
Token eff.:Optimal
Depth:1/5

Structured Data

Microdata
WebSite(min)microdata

Citation Readiness

Opening Summary41w
Descriptive Headingsavg 2.6w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
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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
9
Passed
5
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
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
6/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
42/100
F
907 mg
CO₂e / view
8.8 MB
Page Weight
5%
Cleaner Than
New Visitor
1.04 g
vs
Returning (cached)
518 mg
Annual (10K/mo)
108.8 kg
Emission Segments
Data Center
44 mg
Network
266 mg
Device
596 mg
Resource Breakdown
JavaScript
276.2 KB
Images
8.1 MB
CSS
221.5 KB
Fonts
159.2 KB
HTML
51.6 KB
Other
641 B
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

WAF

193d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

Valid From

19.05.2026

Valid Until

03.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

schneider-electric.comadmin.promodis-fr.se.comalertproxy.se.comaos-core.ecostruxure-asset-advisor-ed.se.appapi.conext-power-cloud.se.appapi.ecostruxure-energy-access-advisor-livelihood.se.appapi.ppr.ecostruxure-energy-access-advisor-livelihood.se.appblog.se.com+12 more

SHA-256 Fingerprint

E7:6F:6F:30:FF:55:2F:26:24:0B:89:09:B8:B0:63:FA:C4:40:25:4B...

Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 1 Hours(max-age=3600)
content-encoding
📦 Gzip(gzip)
content-language
de
content-security-policy
default-src 'self' data: d33kfzswg47kma.cloudfront.net smart...
content-type
text/html; charset=utf-8
date
Sun, 24 May 2026 12:13:01 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

55

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

Domain Information

merten.de

Last Updated

06.03.2026

DNSSEC
Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner
OneTrust
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: OneTrust
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.
C
68/100
Mobile Friendly1 breakpoint
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

ArialRoundedMT

WCAG AA
65/100
Readability
/30
24/30

20px · LH 1.45

Hierarchy
/20
13/20

1.8x ratio

WCAG
/25
17/25

5.1:1 min contrast

Performance
/25
11/25

1 font · 9 req

Heading Font

ArialRoundedMT

Sans36px

Body Font

ArialRoundedMT

Sans20px

Contrast Ratio

5.1:1

WCAG AA (≥4.5:1)

Reading Comfort

~36 CPL

Narrow lines
36px
h1
36px
h2
22px
h3
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.45 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 1/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.1:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

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

Buy on MyFontsFlesch 1

Color Palette

10 unique colors
19.45:1 AAA Light
#ffffff
Primary· 36.1%
#0c0d0e
Text· 19%
#9e9487
Secondary· 5.4%
#5fc19f
Secondary· 3.8%
#d3cdc6
Secondary· 2.2%

Business & Marketing Stack

5 Tools Detected

Enterprise

Marketing Automation

1
MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

1
OneTrustEnterprise

Cookie consent and privacy compliance tools

4

Categories

5

Total Tools

2

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
6
Async
0
Defer

Top Script Sources

local(14)connect.facebook.net(2)googletagmanager.com(2)munchkin.marketo.net(1)cdn.cookielaw.org(1)

Website Identity

merten.de

Location detected: 🇩🇪 Germanyvia tld
de-DE

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Last analyzed: 24 May 2026 at 12:13

Historical Analysis & Change Tracking