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.

Back to Search

uni-leipzig.de

https://uni-leipzig.de· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

uni-leipzig.de

Mobile

Sponsored

Hosting Provider

Universitaet Leipzig

IP Address

139.18.16.133

Server Location

🇩🇪 Leipzig, Germany

ASN

AS680

Organization

Universitaet Leipzig

Server

Nginx

Nameservers

dns-extern-slave.uni-jena.de.news.uni-leipzig.de.server2.rz.uni-leipzig.de.dns-3.dfn.de.

Performance

Page Speed

1.2 MB

33 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Analytics

Web Servers

SEO Analysis

A88/100

uni-leipzig.deuni-leipzig.de

Universität Leipzig: Universität Leipzig

Unsere Universität wurde 1409 gegründet und gehört zu den forschungsstarken und medizinführenden Universitäten Deutschlands. Sie bietet eine einmalige Fächer...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars

Description Length251 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

50 rules

Sitemap reference found

Sponsored

Security Score

66%Fair

Interactive

HTTPS

No WAF

270d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.11.2025

Valid Until

11.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.uni-leipzig.degkr.uni-leipzig.dewww.bbz.uni-leipzig.dewww.sozphil.uni-leipzig.dewww.zls.uni-leipzig.dewww.sikt.uni-leipzig.dechemie.uni-leipzig.dewww.humankind.uni-leipzig.de+12 more

SHA-256 Fingerprint

47:7A:23:D5:AC:58:FA:DB:E7:47:18:28:9C:9A:70:F9:95:A9:95:C3...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, max-age=0)

content-encoding

📦 Gzip(gzip)

content-language

de-DE

content-type

text/html; charset=utf-8

date

Fri, 13 Feb 2026 17:20:45 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

v2.rz.uni-leipzig.de

v1.rz.uni-leipzig.de

v4.rz.uni-leipzig.de

v3.rz.uni-leipzig.de

Domain Information

uni-leipzig.de

Last Updated

15.08.2018

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Roboto

68/100

Readability

/30

32/40

22px · LH 1.25

Hierarchy

/20

8/25

1.45x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Roboto

Sans32px

Body Font

Roboto

Sans22px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

32px

22px

20px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

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

✅ 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.

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)uni-leipzig.de(2)uni.wwwstat.rz.uni-leipzig.de(1)

Website Identity

Facebook Instagram YouTube

Sponsored

Last analyzed: 13 Feb 2026 at 17:20

Historical Analysis & Change Tracking