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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uni-halle.de

https://uni-halle.de· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

uni-halle.de

Sponsored

Hosting Provider

Martin-Luther-Universitaet Halle-Wittenberg

IP Address

141.48.4.230

Server Location

🇩🇪 Halle, Germany

ASN

AS680

Organization

Martin-Luther-Universitaet Halle-Wittenberg

Server

Apache

Nameservers

deneb.dfn.de.ns1.uni-halle.de.ns2.uni-halle.de.ns3.uni-halle.de.

Performance

Page Speed

1.1 MB

41 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Martin-Luther-Universitaet Halle-Wittenberg

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Analytics

Matomo

Web Servers

Apache

SEO Analysis

D56/100

uni-halle.deuni-halle.de

Creating knowledge since 1502

Startseite der Martin-Luther-Universität Halle-Wittenberg.

Title Length29 chars

Recommended: 50-60 chars

Description Length58 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

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Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

251d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

26.10.2025

Valid Until

26.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.uni-halle.de

SHA-256 Fingerprint

5B:51:92:1B:2E:26:10:BA:60:E7:1F:07:39:52:97:DC:90:D6:25:D4...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 60s(max-age=60)

connection

Upgrade, close

content-encoding

📦 Gzip(gzip)

content-length

7207

content-type

text/html; charset=ISO-8859-1

date

Mon, 16 Feb 2026 17:38:48 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (3)

c2641.mx.srv.dfn.de

b2641.mx.srv.dfn.de

a2641.mx.srv.dfn.de

Domain Information

uni-halle.de

Last Updated

22.12.2014

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Times New Roman + arial

46/100

Readability

/30

20/40

12px · LH 1.80

Hierarchy

/20

18/25

2.5x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Times New Roman

Serif30px

Body Font

arial

Sans12px

Contrast Ratio

Reading Comfort

~62 CPL

Optimal (45–75)

30px

18px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.80 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

✅ Optimal line length: ~62 characters per line is comfortable to read.

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Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)piwik.urz.uni-halle.de(1)

Website Identity

Instagram YouTube TikTok Bluesky

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Last analyzed: 16 Feb 2026 at 17:38

Historical Analysis & Change Tracking