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-oldenburg.de

https://uni-oldenburg.de· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

uni-oldenburg.de

Sponsored

Hosting Provider

Carl von Ossietzky Universitaet Oldenburg

IP Address

134.106.87.120

Server Location

🇩🇪 Oldenburg, Germany

ASN

AS680

Organization

Carl von Ossietzky Universitaet Oldenburg

Server

Apache

Nameservers

arbi.informatik.uni-oldenburg.de.ns02.uni-oldenburg.de.ns01.uni-oldenburg.de.dns-2.dfn.de.

Performance

Page Speed

2.2 MB

85 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

UI Components

Owl Carousel Fancybox

CSS Frameworks

Libraries

Icon Libraries

Analytics

Web Servers

Customer Support

SEO Analysis

A82/100

uni-oldenburg.deuni-oldenburg.de

Carl von Ossietzky Universität Oldenburg

Die Universität Oldenburg liegt im Nordwesten Deutschlands. Sie wurde 1973 gegründet und trägt den Namen des Friedensnobelpreisträgers Carl von Ossietzky.

Title Length40 chars

Recommended: 50-60 chars

Description Length154 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: index

robots.txt

223 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

271d

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

17.11.2025

Valid Until

17.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

uol.deome-lexikon.uni-oldenburg.dewww.uol.dewww.uni-oldenburg.deuni-oldenburg.de

SHA-256 Fingerprint

C8:F7:E6:98:F8:DA:58:DA:81:E8:D6:30:AE:AD:CB:15:02:CD:7C:A7...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

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

content-encoding

📦 Gzip(gzip)

content-language

de-DE

content-type

text/html; charset=utf-8

date

Wed, 18 Feb 2026 05:32:01 GMT

expires

Wed, 18 Feb 2026 05:32:01 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

smtpmx.uni-oldenburg.de

Domain Information

uni-oldenburg.de

Last Updated

22.11.2018

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Nunito Sans

68/100

Readability

/30

32/40

15px · LH 1.47

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Nunito Sans

Sans

Body Font

Nunito Sans

Sans15px

Contrast Ratio

Reading Comfort

~72 CPL

Optimal (45–75)

32px

21px

18px

15px

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

✅ Optimal line spacing: 1.47 ratio ensures comfortable reading.

✅ 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.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(14)analyse.uol.de(1)

Website Identity

Facebook Instagram YouTube

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Last analyzed: 18 Feb 2026 at 05:32

Historical Analysis & Change Tracking