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

dur.ac.uk

https://dur.ac.uk· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

dur.ac.uk

Mobile

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Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

75.2.69.134

Server Location

🇺🇸 Seattle, United States

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Apache

Nameservers

infoblox2.dur.ac.uk.infoblox1.dur.ac.uk.ns1.ja.net.

Performance

Page Speed

2.2 MB

122 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

Frontend

Framework

Alpine.js

Styling

Tailwind CSS

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Amazon Web Services (AWS)

Detected API Sources

//player.vimeo.com/api/player....

Technology Stack

14 Technologies Detected

Analytics

Advertising

Twitter Ads LinkedIn Ads

Frameworks

Alpine.js

Libraries

jQueryv3.5.1

UI Components

Swiper

Other

AOS (Animate On Scroll)

CSS Frameworks

Tailwind CSS

Tag Managers

Google Tag Manager

Web Servers

Apache

SEO Analysis

C64/100

dur.ac.ukdur.ac.uk

Durham University

Durham University Homepage

Title Length17 chars

Recommended: 50-60 chars

Description Length26 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

62 rules

Sitemap reference found

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Security Score

46%Poor

Interactive

HTTPS

No WAF

320d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

01.12.2025

Valid Until

30.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

durham.ac.ukwww.dur.ac.ukwww.durham.ac.ukdur.ac.uk

SHA-256 Fingerprint

02:63:CB:5C:33:8E:3E:73:A3:DE:BF:5A:CA:0A:0A:59:A7:2F:0C:4D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔵 2 Days(max-age=172800)

content-encoding

📦 Gzip(gzip)

content-length

21832

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 20:46:41 GMT

expires

Sun, 15 Feb 2026 20:46:41 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

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

Domain Information

dur.ac.uk

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

Typography & Readability

Open Sans

71/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Open Sans

Sans

Body Font

Open Sans

Sans16px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

24px

20px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ 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: 27 elements lack adequate spacing.

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Business & Marketing Stack

9 Tools Detected

Enterprise

Behavior Analytics

HotjarMid-Market

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(6)connect.facebook.net(4)snap.licdn.com(3)scripts.clarity.ms(1)youtube.com(1)

Website Identity

dur.ac.uk

📧 Microsoft 365

Social Profiles

Facebook X (Twitter)Instagram YouTube TikTok Bluesky

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Last analyzed: 13 Feb 2026 at 20:47

Historical Analysis & Change Tracking