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

arup.com

https://arup.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

arup.com

Mobile

Sponsored

Hosting Provider

Microsoft Azure

azure.microsoft.com

IP Address

172.167.88.246

Server Location

🇬🇧 City of London, United Kingdom

ASN

AS8075

Organization

Microsoft Azure Cloud (uksouth)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-193.awsdns-24.com.ns-570.awsdns-07.net.ns-1341.awsdns-39.org.ns-1549.awsdns-01.co.uk.

Performance

Page Speed

4.4 MB

51 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Microsoft Azure

CDN

Cloudflare

Technology Stack

5 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

CDN

SEO Analysis

A+100/100

arup.comarup.com

Arup - Planning, designing, engineering the future - Arup

A global consultancy providing expertise across 150+ disciplines: shaping infrastructure, buildings, energy and sustainability for the built environment.

Title Length57 chars

Recommended: 50-60 chars

Description Length153 chars

Recommended: 120-160 chars

Sponsored

Security Score

41%Poor

Interactive

HTTPS

WAF

71d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

29.01.2026

Valid Until

29.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.arup.com

SHA-256 Fingerprint

FC:86:59:15:EF:79:C1:00:89:87:6A:5B:54:56:C3:0C:1F:17:9F:00...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache,no-store)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cf23babae65fe50-FRA

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

arup.mail.protection.outlook.com

Domain Information

arup.com

Domain Age

31y 5m

Created

23.09.1994

Expires

22.09.2026

Last Updated

23.08.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

spectral

60/100

Readability

/30

25/40

68px · LH 1.10

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

spectral

Serif68px

Body Font

spectral

Serif68px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

68px

20px

28px

68px

✅ Excellent readability: 68px body text is ideal for all devices.

⚠️ Tight line spacing (1.10). Consider 1.4-1.6 for better readability.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ 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.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)cdn-ukwest.onetrust.com(1)js.monitor.azure.com(1)local(1)173-yrh-728.mktoweb.com(1)

Website Identity

arup.com

31 years old

Nom-iq Ltd. dba COM LAUDE📧 Microsoft 365

Social Profiles

Facebook Instagram LinkedIn

Sponsored

Last analyzed: 17 Feb 2026 at 03:35

Historical Analysis & Change Tracking