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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sueddeutsche.de

https://sueddeutsche.de· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

sueddeutsche.de

Mobile

Sponsored

Hosting Provider

WIIT AG

IP Address

208.82.73.61

Server Location

🇩🇪 Düsseldorf, Germany

ASN

AS205411

Organization

WIIT AG

CDN

CloudFront

Nameservers

ns1.boreus.de.ns3.boreus.de.ns4.boreus.de.ns2.boreus.de.

Performance

Page Speed

1.4 MB

89 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

WIIT AG

CDN

CloudFront

Detected API Sources

https://auth.sueddeutsche.de/i...

Technology Stack

10 Technologies Detected

CSS Frameworks

Analytics

Advertising

Frameworks

Meta Frameworks

Tag Managers

Customer Support

SEO Analysis

C62/100

sueddeutsche.desueddeutsche.de

Aktuelle Nachrichten und Kommentare - SZ.de

Nachrichten aus Deutschland und aller Welt mit Kommentaren und Hintergrundberichten.

Title Length43 chars

Recommended: 50-60 chars

Description Length84 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (276/300)

4 issues found

Upgrade to view details

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

196d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

alt-svc

h3=":443"; ma=86400

cache-control

🟡 60s(public,max-age=60,stale-if-error=86400)

content-encoding

📦 Gzip(gzip)

content-security-policy

upgrade-insecure-requests;frame-ancestors 'self' https://*.s...

Good Warning Issue

Typography & Readability

SZ Serif Condensed + SZSansDigital

63/100

Readability

/30

32/40

15px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

SZ Serif Condensed

Serif

Body Font

SZSansDigital

Sans15px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

31px

19px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

⚠️ Cramped layout: 336 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Microsoft ClarityFree

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

A/B Testing & Optimization

KameleoonEnterprise

Experimentation and conversion optimization

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

sueddeutsche.de(9)cdn.cxense.com(2)consent-cdn.sueddeutsche.de(2)auth.sueddeutsche.de(1)googletagmanager.com(1)

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Last analyzed: 11 Feb 2026 at 07:36

Historical Analysis & Change Tracking