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

su.se

https://su.se· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

su.se

Mobile

Sponsored

Hosting Provider

SiteVision AB

IP Address

185.84.52.158

Server Location

🇸🇪 Örebro, Sweden

ASN

AS41174

Organization

SiteVision AB

Nameservers

ns3.su.se.ns1.su.se.ns2.su.se.

Performance

Page Speed

30.2 MB

81 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

SiteVision AB

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Analytics

SEO Analysis

D47/100

su.sesu.se

Stockholms universitet - Stockholms universitet

No description available for this page.

Title Length47 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (38/59)

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

robots.txt

16 rules

Sitemap reference found

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

255d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

27.10.2025

Valid Until

27.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.su.seenglish.su.sefoest.su.seims.su.segeo.su.sesbs.su.seiies.su.seorient.su.se+12 more

SHA-256 Fingerprint

C3:46:65:63:32:39:B3:5A:A1:E9:37:F4:CB:66:42:9F:96:CD:1D:AB...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-security-policy

default-src 'self' mfstatic.com *.mediaflowpro.com *.mediafl...

content-type

text/html;charset=UTF-8

date

Fri, 13 Feb 2026 21:41:14 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (4)

mailfilter-ng-1.sunet.se

mailfilter-ng-4.sunet.se

mailfilter-ng-2.sunet.se

mailfilter-ng-3.sunet.se

Domain Information

su.se

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

caeciliaetext-bold + TheSansB2-Light

73/100

Readability

/30

32/40

16px · LH 1.38

Hierarchy

/20

21/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

caeciliaetext-bold

Sans32px

Body Font

TheSansB2-Light

Sans16px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

32px

26px

24px

16px

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

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

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

⚠️ Cramped layout: 92 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

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

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)mfstatic.com(3)su.matomo.cloud(2)cdn.matomo.cloud(1)analytics.silktide.com(1)

Website Identity

Facebook Instagram YouTube Bluesky

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Last analyzed: 13 Feb 2026 at 21:41

Historical Analysis & Change Tracking