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bitzer.de

https://bitzer.de· First analyzed 08 May 2026· Updated 08 May 2026
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bitzer.de
Desktop screenshot of bitzer.de
Mobile screenshot of bitzer.de
Mobile

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Hosting Provider

LFNET-RO

IP Address

62.50.112.201

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Stuttgart, Germany

ASN

AS12374

Organization

LFNET-RO

Nameservers

dns2.LF.net.dns1.LF.net.dns3.LF.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
838 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.5 MB
47 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
LFNET-RO

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Personalization

1
Dynamic Yield

SEO Analysis

D58/100
17
7
1
Meta Tags9/15
Content3/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile3/4
Indexability3/3
B
bitzer.debitzer.de

Welcome to BITZER

BITZER is the specialist for refrigeration, air conditioning and heat pump technology and ensures optimum temperatures worldwide ➝ Visit us

Title Length17 chars

Recommended: 50-60 chars (~106px / 580px)

Description Length139 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (3 words). Search engines need substantial content for ranking.

8 issues found

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Crawlability

Sitemap

Type: index

14 URLs

14 sub-sitemaps

robots.txt

2 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

7/100
Poor
2 14 2

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

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AI & LLM Readiness

F31/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
4/25

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:3%
Words:2,350
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headings
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...
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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.
D
53/100
8
Passed
6
Critical
3
Warnings
Images & Alt Text
10/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
9/20
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
7/15
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.
5 recommendations
  • •Accessibility recommendation preview...
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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.
25/100
F
566 mg
CO₂e / view
4.5 MB
Page Weight
15%
Cleaner Than
New Visitor
647 mg
vs
Returning (cached)
323 mg
Annual (10K/mo)
67.9 kg
Emission Segments
Data Center
126 mg
Network
136 mg
Device
304 mg
Resource Breakdown
JavaScript
1.7 MB
Images
2.0 MB
CSS
716.2 KB
HTML
22.7 KB
Green Hosting Not Verified
LFNET-RO
9 recommendations
  • •Carbon footprint recommendation preview...
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A

Security Score

81%Very Good
Interactive

HTTPS

No WAF

61d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.04.2026

Valid Until

08.07.2026

Subject Alternative Names (2)

www.bitzer.dewww.prod.bitzer.de

SHA-256 Fingerprint

26:7E:FD:7D:BF:1F:5F:4E:2D:17:5C:09:B2:A0:0F:9F:F0:83:CF:F7...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self' 'unsafe-inline' bitzer.de *.bitzer.de www...
content-type
text/html;charset=UTF-8
date
Fri, 08 May 2026 18:12:53 GMT
referrer-policy
strict-origin-when-cross-origin
strict-transport-security
max-age=31536000; includeSubDomains
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx2.mas.t-systems-service.com
mx3.mas.t-systems-service.com
mx1.mas.t-systems-service.com

Domain Information

bitzer.de

Last Updated

08.12.2010

DNSSEC
Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner
Usercentrics
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Usercentrics
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.
B
74/100
Mobile Friendly40 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

AFDiwa-ExtraBold + Source Sans Pro

WCAG Partial
52/100
Readability
/30
18/30

22px · LH 1.36

Hierarchy
/20
14/20

1.55x ratio · ✓ H1→H6

WCAG
/25
13/25

2.98:1 min contrast

Performance
/25
7/25

3 fonts · 8 req

Heading Font

AFDiwa-ExtraBold

Sans34px

Body Font

Source Sans Pro

Sans22px

Contrast Ratio

2.98:1

9 issues

Reading Comfort

~35 CPL

Narrow lines
34px
h1
30px
h2
22px
h3
18px
h4
22px
p

✅ Excellent readability: 22px body text is ideal for all devices.

⚠️ Tight line spacing (1.36). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 16/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 3.0:1).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 16

Color Palette

5 unique colors
Dark
#1f1f1f
Text· 45.39999999999999%
#495e48
Secondary· 1.8%
#41a62a
Primary· 0%

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

14 Resources

10
Scripts
4
Styles
1
Async
3
Defer

Top Script Sources

local(4)app.usercentrics.eu(2)cdn-eu.dynamicyield.com(2)st-eu.dynamicyield.com(1)..(1)

Website Identity

bitzer.de

Location detected: 🇩🇪 Germanyvia tld
en-GB

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Last analyzed: 08 May 2026 at 18:13

Historical Analysis & Change Tracking