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

york.ac.uk

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

Export

york.ac.uk

Mobile

Sponsored

Hosting Provider

IT Services, University of York

IP Address

144.32.128.115

Server Location

🇬🇧 York, United Kingdom

ASN

AS786

Organization

IT Services, University of York

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

auth1.dns.cam.ac.uk.ns2.york.ac.uk.ns0.york.ac.uk.ns1.york.ac.uk.

Performance

Page Speed

2.1 MB

151 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IT Services, University of York

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

8 Technologies Detected

Analytics

CSS Frameworks

Icon Libraries

Tag Managers

Other

CDN

SEO Analysis

C64/100

york.ac.ukyork.ac.uk

University of York

Outstanding teaching and research in a beautiful and historic city. York is a member of the prestigious Russell Group of research-intensive UK universities.

Title Length18 chars

Recommended: 50-60 chars

Description Length156 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (16/18)

4 issues found

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Crawlability

Sitemap

robots.txt

351 rules

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

86d

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

Valid From

09.02.2026

Valid Until

10.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.york.ac.uk

SHA-256 Fingerprint

AF:C6:EC:19:D6:6A:38:B2:C6:23:51:A3:C2:47:85:35:5D:77:8F:5B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

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HTTP Headers

Developer Console

accept-ranges

bytes

age

132

cache-control

🟡 300s(max-age=300)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cceb23f9d290487-FRA

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt3.aspmx.l.google.com

aspmx.l.google.com

alt4.aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

york.ac.uk

DNSSEC

Not Enabled

Privacy & Compliance

Civic Cookie Control

Cookie Consent Banner

Civic Cookie Control

GDPR Indicators

Cookie consent banner detected

CMP: Civic Cookie Control

Typography & Readability

York Grot + Graphik

86/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

3.75x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

York Grot

Sans60px

Body Font

Graphik

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

60px

48px

42px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.8x larger than body text.

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Cramped layout: 55 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Crazy EggSMB

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

york.ac.uk(7)googletagmanager.com(4)script.crazyegg.com(2)cc.cdn.civiccomputing.com(1)

Website Identity

Facebook Instagram TikTok

Sponsored

Last analyzed: 12 Feb 2026 at 20:04

Historical Analysis & Change Tracking