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thermondo.de

https://thermondo.de· First analyzed 15 May 2026· Updated 15 May 2026
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thermondo.de
Desktop screenshot of thermondo.de
Mobile screenshot of thermondo.de
Mobile

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Hosting Provider

Fastly, Inc.

IP Address

151.101.194.132

Site Location

🇩🇪 Germanyvia tld

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

Server

Heroku

CDN

Fastly

Nameservers

ns2.dnsimple.com.ns3.dnsimple.com.ns4.dnsimple.com.ns1.dnsimple.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
417 ms10%
Speed Index
542 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1004 KB
43 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Fastly, Inc.
CDN
Fastly

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Other

1
VWO

Reviews

1
Trustpilot

Platforms

1
Heroku

SEO Analysis

B76/100
22
5
1
Meta Tags14/15
Content11/12
Headings6/8
Technical23/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
T
thermondo.dethermondo.de

Wir sind Ihr Heizungsbauer vor Ort | thermondo

thermondo ist Ihr Heizungsbauer für einen bequemen Heizungswechsel ✓ Umfassende Beratung ✓ Festpreisangebot ✓ Inkl. Montage und Fördermittelservice ✓

Title Length46 chars

Recommended: 50-60 chars (~282px / 580px)

Description Length149 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (12/22) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

674 URLs

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

30/100
Needs Work
8 13

Sponsored

AI & LLM Readiness

D44/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
3/25
Citation
14/25

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:4%
Words:950
Token eff.:Optimal
Sections/1K:2.1

Structured Data

1 JSON-LD
Organization×1.1
sameAs entity links

Citation Readiness

Opening Summary2208w
Descriptive Headingsavg 149.3w
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.
B
75/100
10
Passed
4
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
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
9/15
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.
66/100
B
101 mg
CO₂e / view
1004.3 KB
Page Weight
70%
Cleaner Than
New Visitor
116 mg
vs
Returning (cached)
58 mg
Annual (10K/mo)
12.2 kg
Emission Segments
Data Center
5 mg
Network
30 mg
Device
67 mg
Resource Breakdown
JavaScript
158.5 KB
Images
9.9 KB
CSS
802.6 KB
HTML
13.5 KB
Other
19.8 KB
Green Hosting Verified
Fastly, Inc.
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

93%Excellent
Static / Informational

HTTPS

No WAF

35d

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

21.03.2026

Valid Until

19.06.2026

Subject Alternative Names (1)

www.thermondo.de

SHA-256 Fingerprint

15:71:9B:68:5E:1A:06:9F:F2:AE:05:BC:B2:25:F6:BC:FC:8D:C0:BE...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
age
83677
cache-control
🔴 No Cache(no-cache)
content-encoding
📦 Gzip(gzip)
content-language
de
content-length
13507
Good Warning Issue

Email Infrastructure

Google Workspace

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

aspmx3.googlemail.com
aspmx.l.google.com
alt2.aspmx.l.google.com
alt1.aspmx.l.google.com

+1 more

Domain Information

thermondo.de

Last Updated

24.08.2017

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
72/100
Mobile Friendly8 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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Mont Heavy + Open Sans

WCAG Partial
67/100
Readability
/30
21/30

18px · LH 1.61

Hierarchy
/20
17/20

2.89x ratio · ✓ H1→H6

WCAG
/25
15/25

1:1 min contrast

Performance
/25
14/25

3 fonts · 5 req

Heading Font

Mont Heavy

Sans52px

Body Font

Open Sans

Sans18px

Contrast Ratio

1:1

3 issues

Reading Comfort

~38 CPL

Narrow lines
52px
h1
41px
h2
29px
h3
16px
h4
18px
p

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

⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 2.9x larger than body text.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

Buy on MyFontsFlesch 31

Color Palette

11 unique colors
Dark
#2b2a26
Text· 8.9%
#f6efe7
Background· 33.9%
#ed033b
Primary· 11.5%
#7f8733
Secondary· 8.5%
#b8088c
Accent· 6.5%
#9c9251
Secondary· 4.4%
#b1aa72
Secondary· 4.2%
#e6175d
Accent· 4.1%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

1
VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

9 Resources

8
Scripts
1
Styles
5
Async
0
Defer

Top Script Sources

googletagmanager.com(2)gtm.thermondo.de(2)app.usercentrics.eu(2)local(2)

Website Identity

Thermondo GmbH

Thermondo GmbH

Organization

Wir sind der Heizungsbauer für ganz Deutschland. Wir haben bereits über 5.000 Heizungswechsel durchgeführt und Kunden so ein energieeffizienteres Heizen ermöglicht.

kontakt@thermondo.de
unsere FAQ für Sie:
www.thermondo.de/

Brunnenstraße 153, Berlin

10115, Berlin, DE

Location detected: 🇩🇪 Germanyvia tld
📧 Google Workspacede

Sponsored

Last analyzed: 15 May 2026 at 03:24

Historical Analysis & Change Tracking