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luftdaten.info

https://luftdaten.info· First analyzed 15 May 2026· Updated 15 May 2026
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luftdaten.info
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Mobile

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Hosting Provider

WebhostOne GmbH

IP Address

89.107.187.146

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Bad Säckingen, Germany

ASN

AS12843

Organization

WebhostOne GmbH

Server

Nginx

Nameservers

ns3.nshost2.net.ns1.nshost2.de.ns2.nshost2.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
542 ms10%
Speed Index
705 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
502 KB
34 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
Enfoldv4.2.3Custom
by Kriesi
View Theme

Technology Stack

3 Technologies Detected

Libraries

1
jQueryv3.6.0

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

B73/100
23
6
3
Meta Tags4/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T5/7
Images3/7
Links4/5
URL5/5
Social0/5
Freshness4/4
Mobile3/4
Indexability3/3
L
luftdaten.infoluftdaten.info

luftdaten.info – Feinstaub selber messen – Open Data und Citizen Sc...

No description available for this page.

Title truncated.
Title Length86 chars

Recommended: 50-60 chars (~521px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Title is too long (86 chars, ~521px). Will be truncated in search results.
  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (13/17) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

2 rules

Local SEO

Local Search Readiness

8/100
Poor
2 15 1

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

D52/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
6/25
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
navheader/footer
Text ratio:6%
Words:958
Token eff.:Optimal
Sections/1K:16.7
Depth:2/5

Structured Data

Microdata
Article×1.2microdataPerson×1.3microdataOrganization×1.1microdata

Citation Readiness

Opening Summary32w
Descriptive Headingsavg 3.5w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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
77/100
11
Passed
2
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
3/15
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.
74/100
A
51 mg
CO₂e / view
502.1 KB
Page Weight
90%
Cleaner Than
New Visitor
58 mg
vs
Returning (cached)
29 mg
Annual (10K/mo)
6.1 kg
Emission Segments
Data Center
3 mg
Network
15 mg
Device
33 mg
Resource Breakdown
JavaScript
164.9 KB
Images
66.9 KB
CSS
250.7 KB
HTML
19.6 KB
Green Hosting Verified
webhostone GmbH
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

46%Poor
Interactive

HTTPS

No WAF

22d

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

08.03.2026

Valid Until

06.06.2026

Subject Alternative Names (1)

luftdaten.info

SHA-256 Fingerprint

6F:D0:0E:05:9B:13:E1:BF:0C:F4:EB:82:A1:D6:AB:88:A7:64:CC:4C...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
19761
content-type
text/html; charset=UTF-8
date
Fri, 15 May 2026 01:55:48 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

20

SPF
DKIM
DMARC

MX Records (1)

xb5.serverdomain.org

Domain Information

luftdaten.info

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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.
C
62/100
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, initial-scale=1, maximum-scale=1
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

HelveticaNeue

WCAG Partial
64/100
Readability
/30
16/30

10px · LH 1.65

Hierarchy
/20
16/20

5.2x ratio · ✓ H1→H6

WCAG
/25
17/25

1:1 min contrast

Performance
/25
15/25

1 font · 1 req

Heading Font

HelveticaNeue

Sans52px

Body Font

HelveticaNeue

Sans10px

Contrast Ratio

1:1

22 issues

Reading Comfort

~38 CPL

Narrow lines
52px
h1
40px
h2
40px
h3
10px
p

❌ Critical: 10px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Partial contrast: 22 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 5.2x larger than body text.

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

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

Buy on MyFonts

Color Palette

4 unique colors
Light
#6cd0c8
Primary· 62.70000000000002%
#56b9b1
Secondary· 26.5%
#51a9a2
Secondary· 6.7%
#88d8d2
Accent· 4.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Social Media

1
Facebook SDKFree

Social widgets and sharing tools

2

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

23 Resources

13
Scripts
10
Styles
1
Async
1
Defer

Top Script Sources

luftdaten.info(11)youtube.com(2)

Website Identity

luftdaten.info

Location detected: 🇩🇪 Germanyvia ip
de

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Last analyzed: 15 May 2026 at 01:56

Historical Analysis & Change Tracking