jacdec.de

https://jacdec.de· First analyzed 28 May 2026· Updated 28 May 2026

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jacdec.de

Mobile

Sponsored

Hosting Provider

STRATO

strato.de

IP Address

81.169.145.79

Site Location

🇩🇪 Germanyvia tld

Server Location

🇩🇪 Berlin, Germany

ASN

AS6724

Organization

Strato AG

Server

Apache

Nameservers

shades17.rzone.de.docks05.rzone.de.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

548 ms10%

Speed Index

712 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.1 MB

54 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

twentynineteen

Technology Stack

19 Technologies Detected

Plugins

WooCommerce

Contact Form 7

Cookie Notice Woo Paypalplus

Woocommerce Paypal Payments

Woocommerce Germanized

Forget About Shortcode Buttons Twitter Tweets

Woocommerce Payments

Google Analyticator

Woocommerce Gateway Paypal Express Checkout

Libraries

CSS Frameworks

Analytics

Payments

Web Servers

Languages

Security

SEO Analysis

D59/100

Meta Tags10/15

Content6/12

Headings7/8

Technical19/25

E-E-A-T0/7

Images3/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

jacdec.dejacdec.de

JACDEC – Your Center for Aviation Safety Information

No description available for this page.

Title Length52 chars

Recommended: 50-60 chars (~316px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

9 URLs

9 sub-sitemaps

robots.txt

9 rules

Sitemap reference found

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

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

Sponsored

AI & LLM Readiness

F39/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

9/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:2%

Words:176

Token eff.:Too Short

Sections/1K:22.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary109w

Descriptive Headingsavg 1.8w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

88/100

Passed

Critical

Warnings

Images & Alt Text

18/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

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

8/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•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.

34/100

213 mg

CO₂e / view

2.1 MB

Page Weight

50%

Cleaner Than

New Visitor

243 mg

Returning (cached)

122 mg

Annual (10K/mo)

25.5 kg

Emission Segments

Data Center

10 mg

Network

63 mg

Device

140 mg

Resource Breakdown

JavaScript

1.4 MB

Images

132.1 KB

CSS

466.7 KB

HTML

56.8 KB

Other

542 B

Green Hosting Verified

STRATO

Provider Match

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

220d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

13.12.2025

Valid Until

03.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

jacdec.dewww.jacdec.de

SHA-256 Fingerprint

34:E1:F6:5C:89:B2:C1:01:E4:1A:9F:C5:6B:97:BA:17:8D:AA:75:2B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-type

text/html; charset=UTF-8

date

Thu, 28 May 2026 19:15:05 GMT

link

<https://www.jacdec.de/wp-json/>; rel="https://api.w.org/", ...

server

Apache/2.4.67 (Unix)

vary

User-Agent

x-powered-by

PHP/7.4.33

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

smtpin.rzone.de

Domain Information

jacdec.de

Last Updated

07.08.2009

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

Data Protection Officer 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.

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system + NonBreakingSpaceOverride

WCAG Partial

75/100

Readability

/30

20/30

25px · LH 1.25

Hierarchy

/20

16/20

2x ratio

WCAG

/25

17/25

1:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

-apple-system

Sans50px

Body Font

NonBreakingSpaceOverride

Sans25px

Contrast Ratio

1:1

11 issues

Reading Comfort

Dual Sans-Serif

left aligned

50px

25px

✅ Excellent readability: 25px body text is ideal for all devices.

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Flesch 49

Color Palette

5 unique colors

2.35:1 Fail Dark

#4a4a48

Other· 31.900000000000002%

#010101

Text· 5.4%

#363d43

Primary· 38%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

jacdec.de(14)platform.twitter.com(2)gstatic.com(1)ssl.google-analytics.com(1)cdn.jsdelivr.net(1)

Website Identity

jacdec.de

Location detected: 🇩🇪 Germanyvia tld

en-US

Social Profiles

X (Twitter)

Sponsored

Last analyzed: 28 May 2026 at 19:15

Historical Analysis & Change Tracking