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

kcl.ac.uk

https://kcl.ac.uk· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

kcl.ac.uk

Mobile

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Hosting Provider

King's College London

IP Address

137.73.130.135

Server Location

🇬🇧 London, United Kingdom

ASN

AS786

Organization

King's College London

CDN

Varnish

Nameservers

ndc-cns-ext-01.kcl.ac.uk.ns3.ja.net.sdc-cns-ext-01.kcl.ac.uk.

Performance

Page Speed

887 KB

33 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

King's College London

CDN

Varnish

Detected API Sources

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

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Tag Managers

Social

SEO Analysis

C61/100

kcl.ac.ukkcl.ac.uk

King's College London

No description available for this page.

Title Length21 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

5 issues found

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Crawlability

Sitemap

Type: standard

4,080 URLs

robots.txt

86 rules

Sitemap reference found

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Security Score

56%Poor

Interactive

HTTPS

No WAF

160d

Certificate Details

Type

Extended Validation (EV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

22.07.2025

Valid Until

22.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

kcl.ac.ukwww.kcl.ac.uk

SHA-256 Fingerprint

E8:1E:9A:7B:5B:11:FE:EF:77:4C:94:64:4F:FD:14:D7:96:68:51:4F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-headers

access-control-allow-methods

GET, OPTIONS

access-control-allow-origin

alt-svc

h3=":443";ma=60;

cache-control

🔴 No Cache(no-cache, no-store)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

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

Domain Information

kcl.ac.uk

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

KingsBureauGrotThreeSeven + KingsBureauGrotFiveOne

54/100

Readability

/30

40/40

24px · LH 1.70

Hierarchy

/20

13/25

1.58x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

KingsBureauGrotThreeSeven

Sans38px

Body Font

KingsBureauGrotFiveOne

Sans24px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

38px

30px

20px

18px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Optimal line spacing: 1.70 ratio ensures comfortable reading.

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

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

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

⚠️ Cramped layout: 35 elements lack adequate spacing.

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Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

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Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)googletagmanager.com(2)cdn.cookielaw.org(2)platform.twitter.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Bluesky

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Last analyzed: 12 Feb 2026 at 13:39

Historical Analysis & Change Tracking