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

gu.se

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

Export

gu.se

Mobile

Sponsored

Hosting Provider

Goteborgs universitet

IP Address

130.241.39.203

Server Location

🇸🇪 Gothenburg, Sweden

ASN

AS2842

Organization

Goteborgs universitet

CDN

Nameservers

ns2.chalmers.se.ns2.net.gu.se.ns1.net.gu.se.sunic.sunet.se.

Performance

Page Speed

1007 KB

44 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

7 Technologies Detected

Fonts

Adobe Fonts (Typekit)Adobe Fonts

Libraries

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

SEO Analysis

D52/100

gu.segu.se

Hem | Göteborgs universitet

No description available for this page.

Title Length27 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 (13/13)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

29 URLs

robots.txt

53 rules

Sitemap reference found

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

67d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

22.01.2026

Valid Until

22.04.2026

Subject Alternative Names (1)

www.gu.se

SHA-256 Fingerprint

2D:7C:7C:A6:91:4E:A7:64:80:E8:B0:7E:4C:53:C3:43:F0:48:5C:A6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

250

cache-control

🟢 1 Month(max-age=2764800, public)

content-encoding

📦 Gzip(gzip)

content-language

content-length

45053

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

gu-se.mail.protection.outlook.com

Domain Information

gu.se

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

HelveticaNeue-CondensedBold + Helvetica

80/100

Readability

/30

32/40

28px · LH 1.38

Hierarchy

/20

25/25

3.21x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

HelveticaNeue-CondensedBold

Sans90px

Body Font

Helvetica

Sans28px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

90px

20px

28px

✅ Excellent readability: 28px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 3.2x larger than body text.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 15 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)siteimproveanalytics.com(1)googletagmanager.com(1)script.e-space.se(1)

Website Identity

Facebook Instagram YouTube

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Last analyzed: 13 Feb 2026 at 14:59

Historical Analysis & Change Tracking