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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jugendherberge.de

https://jugendherberge.de· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

jugendherberge.de

Sponsored

Hosting Provider

DJH Hauptverband fuer Jugendwandern und Jugendherbergen e.V

IP Address

217.7.141.151

Server Location

🇩🇪 Hanover, Germany

ASN

AS3320

Organization

DJH Hauptverband fuer Jugendwandern und Jugendherbergen e.V

Server

Nginx

Nameservers

ns2.vegasystems.net.ns1.vegasystems.de.ns1.djh-rechenzentrum.de.

Performance

Page Speed

2.5 MB

60 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Technology Stack

7 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Web Servers

SEO Analysis

A+94/100

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Title Length53 chars

Recommended: 50-60 chars

Description Length147 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

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Crawlability

Sitemap

Type: index

34 URLs

robots.txt

18 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

298d

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

05.12.2025

Valid Until

15.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.jugendherberge.dejugendherberge.de

SHA-256 Fingerprint

A8:7F:92:AF:F7:FD:D5:BC:17:E1:73:11:81:D1:1F:9F:6D:D9:07:3D...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-store)

content-encoding

📦 Gzip(gzip)

content-language

de-DE

content-type

text/html; charset=utf-8

date

Fri, 20 Feb 2026 02:06:30 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mx02.djh-rechenzentrum.de

mx01.djh-rechenzentrum.de

Domain Information

jugendherberge.de

Last Updated

23.07.2020

DNSSEC

Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner

Usercentrics

GDPR Indicators

Cookie consent banner detected

CMP: Usercentrics

Typography & Readability

Arial

46/100

Readability

/30

25/40

24px · LH 1.00

Hierarchy

/20

18/25

3.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Arial

Sans80px

Body Font

Arial

Sans24px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

80px

36px

20px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 3.3x larger than body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

web.cmp.usercentrics.eu(7)local(4)jugendherberge.de(2)piwik.jugendherberge.de(1)googletagmanager.com(1)

Website Identity

Facebook Instagram

Sponsored

Last analyzed: 20 Feb 2026 at 02:06

Historical Analysis & Change Tracking