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

ntu.ac.uk

https://ntu.ac.uk· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

ntu.ac.uk

Sponsored

Hosting Provider

Squiz Cdn1

IP Address

2.58.104.10

Server Location

🇦🇺 Sydney, Australia

ASN

AS55532

Organization

Squiz Cdn1

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

dns1.ntu.ac.uk.ns1.ja.net.dns0.ntu.ac.uk.

Performance

Page Speed

3.3 MB

79 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Squiz Cdn1

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://maps.googleapis.com/ma...

Technology Stack

13 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

UI Components

Swiper Slick Carousel

Analytics

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Social

CDN

SEO Analysis

A+91/100

ntu.ac.ukntu.ac.uk

Home | Nottingham Trent University

Proud to be 1st in the UK for employability and a five-time 'University of the Year'. Discover how NTU can shape your future.

Title Length35 chars

Recommended: 50-60 chars

Description Length125 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

65 rules

Sponsored

Security Score

46%Poor

Interactive

HTTPS

WAF

85d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

13.02.2026

Valid Until

14.05.2026

Subject Alternative Names (1)

www.ntu.ac.uk

SHA-256 Fingerprint

CD:DA:43:3E:4D:EC:16:07:53:E9:BD:7C:D5:BF:7C:2C:0D:35:28:D1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

280

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(private, max-age=0)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cf6be21eb57d389-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

ntu-ac-uk.mail.protection.outlook.com

Domain Information

ntu.ac.uk

DNSSEC

Not Enabled

Privacy & Compliance

Civic Cookie Control

Cookie Consent Banner

Civic Cookie Control

GDPR Indicators

Cookie consent banner detected

CMP: Civic Cookie Control

Data Protection Officer mentioned

Typography & Readability

UniversLTPro-65Bold + UniversLTPro-55Roman

56/100

Readability

/30

40/40

20px · LH 1.50

Hierarchy

/20

13/25

1.9x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

UniversLTPro-65Bold

Sans38px

Body Font

UniversLTPro-55Roman

Sans20px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

38px

42px

16px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and body text.

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

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

⚠️ Risky: Text appears on background images without overlay protection.

GGoogle Fonts AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Social Media

AddThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(5)ntu.ac.uk(3)cc.cdn.civiccomputing.com(2)rv-vepple-tour.web.app(1)fast.wistia.com(1)

Website Identity

Facebook Instagram YouTube TikTok

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Last analyzed: 17 Feb 2026 at 16:43

Historical Analysis & Change Tracking