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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stuttgarter-zeitung.de

https://stuttgarter-zeitung.de· First analyzed 16 Feb 2026· Updated 16 Feb 2026

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Hosting Provider

WIIT AG

IP Address

208.82.75.154

Server Location

🇩🇪 Düsseldorf, Germany

ASN

AS205411

Organization

WIIT AG

CDN

CloudFront

Nameservers

c.ns14.net.d.ns14.net.a.ns14.net.b.ns14.net.

Performance

Page Speed

1.4 MB

154 requests

Image Optimization

Lazy LoadAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

WIIT AG

CDN

CloudFront

Progressive Web App

PWA ReadyWeb ManifestService WorkerApple Touch IconTheme Color

Detected API Sources

https://auth.stuttgarter-zeitu...

Technology Stack

17 Technologies Detected

Analytics

UI Components

Advertising

Frameworks

Libraries

Other

Other

CSS Frameworks

Icon Libraries

Tag Managers

Security

Customer Support

SEO Analysis

A82/100

stuttgarter-zeitung.destuttgarter-zeitung.de

Aktuelle Nachrichten

Auf stuttgarter-zeitung.de finden Sie aktuelle Nachrichten, Bilderstrecken und Reportagen aus Stuttgart, Baden-Württemberg und der Welt.

Title Length20 chars

Recommended: 50-60 chars

Description Length136 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

2 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

2106 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

240d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.09.2025

Valid Until

14.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.stuttgarter-zeitung.destuttgarter-zeitung.de

SHA-256 Fingerprint

52:66:37:37:25:2E:AE:1C:E4:56:AF:A6:1E:40:D1:41:B3:E0:01:E0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

cache-control

🟡 180s(public, max-age=180)

content-encoding

📦 Gzip(gzip)

content-security-policy

upgrade-insecure-requests

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

stuttgarterzeitung-de02i.mail.protection.outlook.com

Domain Information

stuttgarter-zeitung.de

Last Updated

16.05.2022

DNSSEC

Not Enabled

Privacy & Compliance

consentmanager

Cookie Consent Banner

consentmanager

GDPR Indicators

Cookie consent banner detected

CMP: consentmanager

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

Source Sans + Source Sans Pro

38/100

Readability

/30

32/40

24px · LH 1.30

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Source Sans

Sans

Body Font

Source Sans Pro

Sans24px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

18px

16px

22px

24px

Minor Third

Scale

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

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 23 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Matomo (Piwik)Mid-Market

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)cdn.cxense.com(2)files.upscore.com(2)local(2)auth.stuttgarter-zeitung.de(1)

Website Identity

Facebook X (Twitter)Instagram YouTube TikTok Bluesky

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Last analyzed: 16 Feb 2026 at 21:31

Historical Analysis & Change Tracking