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caleffi.com

https://caleffi.com· First analyzed 10 May 2026· Updated 10 May 2026
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caleffi.com
Desktop screenshot of caleffi.com
Mobile screenshot of caleffi.com
Mobile

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Hosting Provider

Google Cloud Platform
cloud.google.com

IP Address

34.160.47.1

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Server

Nginx

Nameservers

adns2.intercom.it.adns1.intercom.it.adns3.intercom.it.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
586 ms10%
Speed Index
762 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
567 KB
31 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupalv9

Technology Stack

8 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

B73/100
20
6
1
Meta Tags9/15
Content10/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images4/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
C
caleffi.comcaleffi.com

Caleffi Hydronic Solutions | Caleffi S.p.a.

No description available for this page.

Title Length43 chars

Recommended: 50-60 chars (~242px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

845 URLs

robots.txt

84 rules

Sitemap reference found

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AI & LLM Readiness

D44/100
Bot Access
19/25
Machine Read.
7/25
Schema Data
9/25
Citation
9/25

AI Bot Access

13/14 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:7%
Words:1,892
Token eff.:Optimal

Structured Data

4 JSON-LD
Article×1.2(min)Organization×1.1WebSiteSearchAction
sameAs entity links

Citation Readiness

Opening Summary175w
Descriptive Headings
Canonical URL
Open Graph1/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
A
87/100
14
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
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
15/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
69/100
A
57 mg
CO₂e / view
566.6 KB
Page Weight
80%
Cleaner Than
New Visitor
65 mg
vs
Returning (cached)
33 mg
Annual (10K/mo)
6.9 kg
Emission Segments
Data Center
3 mg
Network
17 mg
Device
38 mg
Resource Breakdown
JavaScript
49.3 KB
Images
434.9 KB
CSS
76.8 KB
Fonts
907 B
HTML
4.6 KB
Green Hosting Verified
Google Cloud
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

91%Excellent
Static / Informational

HTTPS

No WAF

53d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

03.04.2026

Valid Until

03.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.caleffi.com

SHA-256 Fingerprint

D6:B8:FD:95:3C:1A:41:BF:E9:75:EE:CC:07:9C:83:82:65:94:37:30...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

age
1015
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
cache-control
🟡 60s(max-age=60, public)
content-encoding
📦 Gzip(gzip)
content-language
en
content-length
4389
Good Warning Issue

Email Infrastructure

Google Workspace

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

ALT2.ASPMX.L.GOOGLE.com
ALT4.ASPMX.L.GOOGLE.com
ALT1.ASPMX.L.GOOGLE.com
ALT3.ASPMX.L.GOOGLE.com

+1 more

Domain Information

caleffi.com

Domain Age
29y 1m

Created

27.03.1997

Expires

28.03.2027

Last Updated

21.03.2026

Registrar

CSL Computer Service Langenbach GmbH d/b/a joker.com

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
Data Protection Officer mentioned
Legitimate interest basis 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
74/100
Mobile Friendly24 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

arial

WCAG AA
77/100
Readability
/30
20/30

15px · LH 1.60

Hierarchy
/20
15/20

1.67x ratio · ✓ H1→H6

WCAG
/25
20/25

4.79:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

arial

Sans25px

Body Font

arial

Sans15px

Contrast Ratio

4.79:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Font Family

left aligned
25px
h1
16px
h3
15px
p

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.8:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle FontsFluid Type (rem)Flesch 0

Color Palette

6 unique colors
Light
#ffffff
Primary· 81.7%
#3d8e50
Secondary· 3.4%
#75b253
Secondary· 2.5%

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

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Scripts & Styles

18 Resources

12
Scripts
6
Styles
7
Async
0
Defer

Top Script Sources

local(5)googletagmanager.com(3)consent.cookiebot.com(2)youtube.com(2)

Website Identity

caleffi.com

29 years old
Location detected: 🇺🇸 United Statesvia ip
CSL Computer Service Langenbach GmbH d/b/a joker.com📧 Google Workspace

Social Profiles

Facebook

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Last analyzed: 10 May 2026 at 16:13

Historical Analysis & Change Tracking