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

caa.co.uk

https://caa.co.uk· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

caa.co.uk

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

76.223.34.124

Server Location

🇺🇸 Seattle, United States

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

CDN

Nameservers

ns3-04.azure-dns.org.ns4-04.azure-dns.info.ns1-04.azure-dns.com.ns2-04.azure-dns.net.

Performance

Page Speed

1.8 MB

42 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Umbraco

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Tag Managers

SEO Analysis

D50/100

caa.co.ukcaa.co.uk

UK Civil Aviation Authority

The UK Civil Aviation Authority (CAA), the UK’s independent aviation regulator, protects people and enables aviation. Provides guidance and services for pass...

Description truncated.

Title Length27 chars

Recommended: 50-60 chars

Description Length337 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (16/17)

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

8,467 URLs

robots.txt

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

124d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.12.2025

Valid Until

21.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.caa.co.uk

SHA-256 Fingerprint

FC:3C:E9:51:81:5D:5C:5A:80:EF:6B:3D:2F:A6:1D:DA:C5:A6:CC:DF...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 180s(public, max-age=180)

content-security-policy

default-src 'none'; frame-ancestors 'self'; base-uri 'self';...

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 15:11:19 GMT

permissions-policy

accelerometer=(),camera=(),geolocation=(),gyroscope=(),magne...

referrer-policy

no-referrer-when-downgrade

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

caa-co-uk.mail.protection.outlook.com

Domain Information

caa.co.uk

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Helvetica Neue

83/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

21/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica Neue

Sans36px

Body Font

Helvetica Neue

Sans18px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

36px

20px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.0x larger than 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.

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)googletagmanager.com(2)scripts.clarity.ms(1)clarity.ms(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 17 Feb 2026 at 15:11

Historical Analysis & Change Tracking