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

ntnu.no

https://ntnu.no· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

ntnu.no

Mobile

Sponsored

Hosting Provider

Norwegian University of Science and Technology

IP Address

129.241.160.102

Server Location

🇳🇴 Trondheim, Norway

ASN

AS224

Organization

Norwegian University of Science and Technology

Server

Apache

Nameservers

ns2.ntnu.no.ns1.ntnu.no.

Performance

Page Speed

3 MB

59 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Tailwind CSS

Infrastructure

Hosting

Norwegian University of Science and Technology

Technology Stack

8 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Fonts

Advertising

Web Servers

SEO Analysis

D58/100

ntnu.nontnu.no

NTNU: Norges teknisk-naturvitenskapelige universitet - NTNU

Norges teknisk-naturvitenskapelige universitet. Campuser i Trondheim, Gjøvik og Ålesund. NTNU har 40000 studenter og hovedansvar for den høyere teknologiutda...

Description truncated.

Title Length59 chars

Recommended: 50-60 chars

Description Length173 chars

Recommended: 120-160 chars

Issues (0)

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

71 URLs

robots.txt

137 rules

Sitemap reference found

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

140d

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

04.07.2025

Valid Until

04.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.ntnu.nontnu.no

SHA-256 Fingerprint

CF:AC:A4:83:81:E4:B8:D5:25:5C:72:E6:E5:35:4C:8D:33:8B:1E:0A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

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

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

17512

content-type

text/html;charset=UTF-8

date

Fri, 13 Feb 2026 12:56:16 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.ntnu.no

Domain Information

ntnu.no

Domain Age

26y 3m

Created

14.11.1999

Last Updated

15.11.2025

Registrar

SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDØR

DNSSEC

Not Enabled

Typography & Readability

Open Sans + Arial

70/100

Readability

/30

32/40

19px · LH 1.20

Hierarchy

/20

8/25

1.37x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Open Sans

Sans26px

Body Font

Arial

Sans19px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

26px

22px

19px

✅ Excellent readability: 19px body text is ideal for all devices.

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

⚠️ Cramped layout: 22 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

GGoogle Fonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(17)siteimproveanalytics.com(1)umami.it.ntnu.no(1)ntnu.no(1)

Website Identity

Facebook Instagram YouTube TikTok

Sponsored

Last analyzed: 13 Feb 2026 at 12:56

Historical Analysis & Change Tracking