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

tu-chemnitz.de

https://tu-chemnitz.de· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

tu-chemnitz.de

Sponsored

Hosting Provider

Technische Universitaet Chemnitz

IP Address

134.109.133.7

Server Location

🇩🇪 Chemnitz, Germany

ASN

AS680

Organization

Technische Universitaet Chemnitz

Server

Apache

Nameservers

dns-3.dfn.de.ceres.hrz.tu-chemnitz.de.secondary.rrze.uni-erlangen.de.eris.hrz.tu-chemnitz.de.

Performance

Page Speed

979 KB

38 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Technische Universitaet Chemnitz

Technology Stack

4 Technologies Detected

CSS Frameworks

Libraries

Web Servers

SEO Analysis

C62/100

tu-chemnitz.detu-chemnitz.de

Technische Universität Chemnitz

Title Length31 chars

Recommended: 50-60 chars

Description Length31 chars

Recommended: 120-160 chars

Issues (0)

6 issues found

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Crawlability

Sitemap

robots.txt

15 rules

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (3072 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

21.01.2026

Valid Until

21.04.2026

Subject Alternative Names (1)

www.tu-chemnitz.de

SHA-256 Fingerprint

93:15:0F:E5:F2:3E:58:94:66:AA:51:8C:57:95:07:6F:23:35:71:82...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-language

content-length

9033

content-security-policy

connect-src 'self' https://*.tu-chemnitz.de/; font-src 'self...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

ezra.hrz.tu-chemnitz.de

kyle.hrz.tu-chemnitz.de

Domain Information

tu-chemnitz.de

Last Updated

15.11.2018

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Arial

85/100

Readability

/30

32/40

14px · LH 1.60

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans28px

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

~45 CPL

Needs attention

28px

21px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

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

⚠️ Cramped layout: 25 elements lack adequate spacing.

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Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)tu-chemnitz.de(1)

Website Identity

Facebook Instagram YouTube Mastodon

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Last analyzed: 16 Feb 2026 at 15:30

Historical Analysis & Change Tracking