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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jku.at

https://jku.at· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

jku.at

Sponsored

Hosting Provider

University Linz

IP Address

140.78.3.160

Server Location

🇦🇹 Linz, Austria

ASN

AS1205

Organization

University Linz

Server

Nginx

Nameservers

ns2.jku.at.alijku01.edvz.uni-linz.ac.at.

Performance

Page Speed

1.8 MB

40 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

TYPO3

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

A84/100

jku.atjku.at

JKU - Johannes Kepler Universität Linz

Absolviere Dein Studium an der größten Universität Oberösterreichs mit rund 100 Studien und Universitätslehrgängen: Bachelor, Master, Diplom, Doktorat, Lehrg...

Description truncated.

Title Length38 chars

Recommended: 50-60 chars

Description Length175 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

robots.txt

35 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

277d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.11.2025

Valid Until

21.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (10)

p-typo3.im.jku.atwww.p-typo3.im.jku.atschulung.jku.atwww.schulung.jku.atjku.atwww.jku.atfernstudien.atwww.fernstudien.at+2 more

SHA-256 Fingerprint

B7:55:95:88:A5:AA:F2:0C:18:B0:09:EB:98:B5:AD:7C:1E:63:35:19...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 23 Hours(max-age=86325)

content-encoding

📦 Gzip(gzip)

content-language

de-AT

content-length

21528

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 14:13:19 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

mail1.edvz.uni-linz.ac.at

mail3.edvz.uni-linz.ac.at

mail4.edvz.uni-linz.ac.at

mail2.edvz.uni-linz.ac.at

Domain Information

jku.at

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Gotham SSm A

44/100

Readability

/30

25/40

48px · LH 1.00

Hierarchy

/20

8/25

0.29x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Gotham SSm A

Sans14px

Body Font

Gotham SSm A

Sans48px

Contrast Ratio

Reading Comfort

~1079 CPL

Needs attention

14px

32px

24px

48px

Perfect Fifth

Scale

✅ Excellent readability: 48px body text is ideal for all devices.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

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

✅ Good performance: Using 1 font families keeps load times fast.

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

✅ Protected text on images: Using text-shadow for readability.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)cdnjs.cloudflare.com(1)

Website Identity

Facebook Instagram YouTube TikTok Mastodon Threads

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Last analyzed: 16 Feb 2026 at 14:13

Historical Analysis & Change Tracking