StackOptic
Back to Search
celle.de favicon

celle.de

https://celle.de· First analyzed 12 May 2026· Updated 12 May 2026
Export
celle.de
Desktop screenshot of celle.de
Mobile screenshot of celle.de
Mobile

Sponsored

Hosting Provider

TNG Stadtnetz GmbH

IP Address

213.178.85.178

Site Location

🇩🇪 Germanyvia phone

Server Location

🇩🇪 Kiel, Germany

ASN

AS13101

Organization

TNG Stadtnetz GmbH

Server

Nginx

Nameservers

ns2.advantic.net.ns1.advantic.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
759 ms10%
Speed Index
987 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6.8 MB
74 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
TNG Stadtnetz GmbH

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Libraries

2
jQueryv3.5.1
jQuery UI

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Web Servers

1
Nginx

Customer Support

1
Zendesk

SEO Analysis

C66/100
19
8
1
Meta Tags5/15
Content12/12
Headings3/8
Technical15/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile4/4
Indexability3/3
C
celle.decelle.de

Stadt Celle

 

Title Length11 chars

Recommended: 50-60 chars (~63px / 580px)

Description Length1 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,395 URLs

robots.txt

8 rules

Sitemap reference found

Local SEO

Local Search Readiness

17/100
Poor
5 10 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
0/25
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
nav
Text ratio:9%
Words:1,910
Token eff.:Optimal
Sections/1K:3.1
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary17w
Descriptive Headingsavg 4.5w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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
12
Passed
3
Critical
1
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
5/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
14/100
F
857 mg
CO₂e / view
6.8 MB
Page Weight
5%
Cleaner Than
New Visitor
979 mg
vs
Returning (cached)
490 mg
Annual (10K/mo)
102.8 kg
Emission Segments
Data Center
191 mg
Network
206 mg
Device
460 mg
Resource Breakdown
JavaScript
1.2 MB
Images
361.8 KB
CSS
5.2 MB
HTML
25.3 KB
Green Hosting Not Verified
TNG Stadtnetz GmbH
8 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

66%Fair
Interactive

HTTPS

No WAF

198d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.05.2026

Valid Until

26.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.celle.decelle.de

SHA-256 Fingerprint

38:80:36:5C:C1:1D:5A:3F:90:2B:06:C1:A7:B5:03:E0:14:13:B1:51...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-security-policy
default-src * 'unsafe-eval' 'unsafe-inline' data: mediastrea...
content-type
text/html; charset=ISO-8859-15
date
Tue, 12 May 2026 18:24:53 GMT
referrer-policy
no-referrer-when-downgrade
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

50

SPF
DKIM
DMARC

MX Records (2)

mta2in.kdo.de
mta1in.kdo.de

Domain Information

celle.de

Last Updated

07.05.2018

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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 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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Source Sans Pro

WCAG AA
61/100
Readability
/30
21/30

22px · LH 1.33

Hierarchy
/20
8/20
WCAG
/25
21/25

5.06:1 min contrast

Performance
/25
11/25

1 font · 10 req

Heading Font

Source Sans Pro

Sans

Body Font

Source Sans Pro

Sans22px

Contrast Ratio

5.06:1

WCAG AA (≥4.5:1)

Reading Comfort

~36 CPL

Narrow lines
90px
h2
32px
h3
22px
p

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

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

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

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Buy on MyFontsFlesch 23

Color Palette

10 unique colors
Light
#eef0f0
Background· 15.5%
#0168b5
Primary· 21.099999999999998%
#204968
Accent· 10.3%
#c2d1d0
Secondary· 9.3%
#397caa
Secondary· 9.1%
#1d6699
Accent· 8.5%
#3d6887
Secondary· 7.3%
#9dacb1
Secondary· 6.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

29 Resources

20
Scripts
9
Styles
3
Async
0
Defer

Top Script Sources

local(18)assets.viind.com(1)cdn-eu.readspeaker.com(1)

Website Identity

celle.de

stadt@celle.de
+49514112-0
Location detected: 🇩🇪 Germanyvia phone
de

Sponsored

Last analyzed: 12 May 2026 at 18:25

Historical Analysis & Change Tracking