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

kuleuven.be

https://kuleuven.be· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

kuleuven.be

Mobile

Sponsored

Hosting Provider

Katholieke Universiteit Leuven

IP Address

134.58.64.162

Server Location

🇧🇪 Leuven, Belgium

ASN

AS2611

Organization

Katholieke Universiteit Leuven

Server

Apache

Nameservers

dns1.kulnet.kuleuven.be.dns2.kulnet.kuleuven.be.

Performance

Page Speed

884 KB

39 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Katholieke Universiteit Leuven

Technology Stack

7 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Fonts

Analytics

Tag Managers

Web Servers

SEO Analysis

B70/100

kuleuven.bekuleuven.be

KU Leuven

KU Leuven is een internationale community waar innovatief onderzoek aan de basis ligt van alle opleidingen. Gedreven onderzoekers en nieuwsgierige studenten ...

Description truncated.

Title Length9 chars

Recommended: 50-60 chars

Description Length264 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

robots.txt

34 rules

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

318d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

26.11.2025

Valid Until

28.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

www.kuleuven.bekuleuven.bekuleuven.be

SHA-256 Fingerprint

A4:C6:32:47:6E:BD:30:7D:58:A3:F9:C1:48:65:6C:B7:2A:0F:40:FE...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-language

content-security-policy

frame-ancestors 'self' https://kuleuven.be https://*.kuleuve...

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 (6)

cavin02.kuleuven.be

limbak.cc.kuleuven.be

kromsin.cc.kuleuven.be

cavin03.kuleuven.be

+2 more

Domain Information

kuleuven.be

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Source Serif Pro + sans-serif

73/100

Readability

/30

32/40

16px · LH 1.63

Hierarchy

/20

18/25

2.86x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Source Serif Pro

Serif45px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

45px

25px

16px

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

✅ Optimal line spacing: 1.63 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.9x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

kuleuven.be(8)googletagmanager.com(2)cdn.cookielaw.org(2)local(1)stijl.kuleuven.be(1)

Website Identity

Facebook Instagram YouTube

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Last analyzed: 12 Feb 2026 at 19:52

Historical Analysis & Change Tracking