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

lu.se

https://lu.se· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

lu.se

Mobile

Sponsored

Hosting Provider

Lund University

IP Address

130.235.138.12

Server Location

🇸🇪 Lund, Sweden

ASN

AS2846

Organization

Lund University

Server

Apache

CDN

Nameservers

nsc.lu.se.sunic.sunet.se.nsa.lu.se.

Performance

Page Speed

4 MB

48 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

Infrastructure

Hosting

Lund University

CDN

Technology Stack

5 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Analytics

Web Servers

SEO Analysis

C64/100

lu.selu.se

Start | Lunds universitet

Lunds universitet grundades 1666 och rankas återkommande som ett av världens 100 främsta lärosäten. Här finns cirka 46 000 studenter och mer än 8 000 medarbe...

Description truncated.

Title Length25 chars

Recommended: 50-60 chars

Description Length162 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

robots.txt

390 rules

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

86d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (3072 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

09.02.2026

Valid Until

10.05.2026

Subject Alternative Names (20)

*.event.lu.sebibl.biol.lu.sebibliotek.kc.lu.segraduateschool.sam.lu.segs.sam.lu.sewww.abc.lu.sewww.ace.lu.sewww.agenda2030graduateschool.lu.se+12 more

SHA-256 Fingerprint

21:CD:6E:D2:87:0F:8A:A1:36:34:3C:C6:DE:1A:5B:1E:49:DB:7F:5F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

499

cache-control

🟢 1 Year(max-age=31536000, public)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

35666

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

lu-se.mail.protection.outlook.com

Domain Information

lu.se

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Lora + Inter

84/100

Readability

/30

40/40

16px · LH 1.60

Hierarchy

/20

21/25

2.62x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Lora

Serif42px

Body Font

Inter

Sans16px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

42px

30px

24px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.6x 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.

⚠️ Cramped layout: 52 elements lack adequate spacing.

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

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)browsealoud.com(2)webstats.sgit.se(1)

Website Identity

Facebook Instagram LinkedIn YouTube

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Last analyzed: 12 Feb 2026 at 20:59

Historical Analysis & Change Tracking