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.

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brusselsairlines.com

https://brusselsairlines.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

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Hosting Provider

Microsoft Azure

azure.microsoft.com

IP Address

20.101.251.232

Server Location

🇳🇱 Amsterdam, Netherlands

ASN

AS8075

Organization

Microsoft Azure Cloud (westeurope)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

udns1.cscudns.com.udns2.cscudns.org.

Performance

Page Speed

5.3 MB

107 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Styling

Tailwind CSS

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Microsoft Azure

CDN

Cloudflare

Progressive Web App

Web Manifest

Detected API Sources

https://shop.brusselsairlines....

Technology Stack

5 Technologies Detected

CSS Frameworks

Icon Libraries

Fonts

Analytics

CDN

SEO Analysis

C68/100

brusselsairlines.combrusselsairlines.com

Discover the world – book flights with Brussels Airlines | Brussels...

Plan your next adventure with Brussels Airlines ✈️. Book your flight today and enjoy great offers and seamless travel. Find out more!

Title truncated.

Title Length76 chars

Recommended: 50-60 chars

Description Length133 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (16/26)

4 issues found

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Crawlability

Sitemap

robots.txt

6 rules

Sitemap reference found

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Security Score

86%Very Good

Interactive

HTTPS

WAF

233d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.09.2025

Valid Until

11.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.brusselsairlines.com

SHA-256 Fingerprint

59:0E:8E:AB:B4:26:7D:08:2A:E4:41:64:BF:61:A0:E9:02:27:27:72...

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HTTP Headers

Developer Console

age

cache-control

🟡 8 Hours(public, max-age=28800)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9d0bdef8ca4c9a1d-FRA

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self' *.lufthansa.com *.miles-and-more.com ...

Good Warning Issue

Email Infrastructure

Barracuda

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

d310916.a.ess.de.barracudanetworks.com

d310916.b.ess.de.barracudanetworks.com

Domain Information

brusselsairlines.com

Domain Age

24 years

Created

29.01.2002

Expires

13.06.2027

Last Updated

11.02.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

consentmanager

Cookie Consent Banner

consentmanager

GDPR Indicators

Cookie consent banner detected

CMP: consentmanager

Data Protection Officer mentioned

Typography & Readability

Intelo

80/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Intelo

Sans36px

Body Font

Intelo

Sans18px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

36px

28px

16px

18px

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

✅ 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.

⚠️ Cramped layout: 18 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

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Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

tags.tiqcdn.com(4)local(2)rum.hlx.page(1)shop.brusselsairlines.com(1)

Website Identity

Facebook Instagram LinkedIn YouTube TikTok

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Last analyzed: 20 Feb 2026 at 06:15

Historical Analysis & Change Tracking