What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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chaosdorf.de

https://chaosdorf.de· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

chaosdorf.de

Sponsored

Hosting Provider

Chaos Computer Club Dusseldorf e.V.

IP Address

217.69.82.246

Server Location

🇩🇪 Düsseldorf, Germany

ASN

AS61157

Organization

Chaos Computer Club Dusseldorf e.V.

Server

Nginx

Nameservers

ns2.plusserver.com.ns3.plusserver.com.ns1.plusserver.com.

Performance

Page Speed

1.2 MB

24 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

Twenty Seventeenv4.0

by the WordPress team

View Theme

Technology Stack

5 Technologies Detected

Plugins

Raumstatus Heatmap Ics Calendar

Libraries

jQueryv3.7.1

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

D56/100

chaosdorf.dechaosdorf.de

Chaosdorf – Hackspace des CCC Düsseldorf

No description available for this page.

Title Length40 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

6 URLs

robots.txt

4 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

42d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

01.01.2026

Valid Until

01.04.2026

Subject Alternative Names (8)

chaosdorf.deeh02.easterhegg.eueh2002.chaosdorf.degamejam.chaosdorf.degamejams.chaosdorf.demd.chaosdorf.dewiki.chaosdorf.dewww.chaosdorf.de

SHA-256 Fingerprint

74:91:95:CD:08:1F:F6:4B:F2:EB:37:9A:E6:D5:80:CA:5D:64:4C:81...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 08:19:52 GMT

link

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

permissions-policy

interest-cohort=()

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

intern.chaosdorf.de

Domain Information

chaosdorf.de

Last Updated

17.01.2025

DNSSEC

Not Enabled

Typography & Readability

Computerfont + Open Sans

81/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

18/25

4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Computerfont

Sans64px

Body Font

Open Sans

Sans16px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

64px

14px

26px

16px

Minor Second

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.0x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

⚠️ Cramped layout: 10 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

chaosdorf.de(7)

Website Identity

YouTube GitHub

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Last analyzed: 17 Feb 2026 at 08:20

Historical Analysis & Change Tracking