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

hku.hk

https://hku.hk· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

hku.hk

Mobile

Sponsored

Hosting Provider

The University of Hong Kong

IP Address

147.8.2.58

Server Location

🇭🇰 Pok Fu Lam, Hong Kong

ASN

AS4528

Organization

The University of Hong Kong

Server

Apache

Nameservers

ns10.gdnsdef.com.ns1.hku.hk.ns2.cuhk.edu.hk.ns3.hku.hk.+3 more

Performance

Page Speed

13.7 MB

77 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

The University of Hong Kong

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Analytics

Meta Frameworks

Libraries

Other

AOS (Animate On Scroll)

CSS Frameworks

Tailwind CSS

Tag Managers

Google Tag Manager

Web Servers

Apache

SEO Analysis

B70/100

hku.hkhku.hk

The University of Hong Kong (HKU)

Established in 1911, the University of Hong Kong (HKU) is the territory’s oldest institute of higher learning and also an internationally recognized, researc...

Description truncated.

Title Length33 chars

Recommended: 50-60 chars

Description Length189 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

257d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

14.10.2025

Valid Until

27.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.hku.hkhku.hk

SHA-256 Fingerprint

BC:52:F1:6C:19:8F:F4:D0:C1:1E:FB:6D:1D:84:9A:A0:0C:A8:EE:05...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

connection

Upgrade, Keep-Alive

content-length

97608

content-security-policy

upgrade-insecure-requests, upgrade-insecure-requests

content-type

text/html

date

Thu, 12 Feb 2026 18:29:45 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

hku-nsp1.hku.hk

hku-nsp2.hku.hk

Domain Information

hku.hk

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

roboto

81/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

13/25

1.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

roboto

Sans24px

Body Font

roboto

Sans16px

Contrast Ratio

Reading Comfort

~41 CPL

Needs attention

24px

54px

16px

✅ Excellent readability: 16px 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.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)googletagmanager.com(2)static.hotjar.com(1)ssl.google-analytics.com(1)script.hotjar.com(1)

Website Identity

Facebook

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Last analyzed: 12 Feb 2026 at 18:30

Historical Analysis & Change Tracking