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

ulster.ac.uk

https://ulster.ac.uk· First analyzed 22 Apr 2026· Updated 22 Apr 2026

Export

ulster.ac.uk

Mobile

Sponsored

Hosting Provider

Squiz Cdn1

IP Address

2.58.104.10

Site Location

🇬🇧 United Kingdomvia phone

Server Location

🇦🇺 Sydney, Australia

ASN

AS55532

Organization

Squiz Cdn1

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns4.ja.net.captain.ulster.ac.uk.chief.ulster.ac.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5.3 MB

175 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Squiz Cdn1

CDN

Cloudflare

Technology Stack

18 Technologies Detected

CSS Frameworks

Bootstrap

Tailwind CSS

Foundation Normalize.css

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Other

GSAPv3.13.0 Lottie

Advertising

Google Ads LinkedIn Ads

Libraries

jQueryv3.5.1

UI Components

Fancybox

Icon Libraries

Font Awesome

Fonts

Adobe Fonts (Typekit)

Tag Managers

Google Tag Manager

CDN

Cloudflare

SEO Analysis

C65/100

Meta Tags9/15

Content11/12

Headings8/8

Technical16/21

E-E-A-T0/7

Images3/7

Links4/5

URL5/5

Social4/5

Freshness0/4

Mobile2/4

Indexability3/3

ulster.ac.ukulster.ac.uk

Ulster University – UK & Ireland University of the Year 2024 | Ulst...

Ulster University is the UK and Ireland University of the Year with a national and international reputation for teaching excellence and research innovation.

Title truncated.

Title Length80 chars

Recommended: 50-60 chars (~471px / 580px)

Description Length156 chars

Recommended: 120-160 chars

Issues (2)

• Title is too long (80 chars, ~471px). Will be truncated in search results.
• Most images missing alt text (90/126) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Local SEO

Local Search Readiness

19/100

Poor

6 10 1

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D44/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

3/25

Citation

11/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:4%

Words:1,068

Token eff.:Optimal

Sections/1K:11.2

Structured Data

3 JSON-LD

WebSiteSearchAction

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 6.4w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

Upgrade to view recommendations

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

75/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

12/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

15/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

5/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

23/100

672 mg

CO₂e / view

5.3 MB

Page Weight

Cleaner Than

New Visitor

768 mg

Returning (cached)

384 mg

Annual (10K/mo)

80.6 kg

Emission Segments

Data Center

150 mg

Network

161 mg

Device

361 mg

Resource Breakdown

JavaScript

461.4 KB

Images

4.7 MB

CSS

134.5 KB

HTML

16.3 KB

Other

811 B

Green Hosting Not Verified

Squiz Cdn1

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

46%Poor

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+H3

Valid From

19.04.2026

Valid Until

18.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.ulster.ac.uk

SHA-256 Fingerprint

E8:F2:A9:42:FD:F7:57:55:9A:54:64:65:72:3F:F0:19:70:5C:81:F1...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

123

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(private, max-age=0)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9f0602724cde1953-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

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

Domain Information

ulster.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

Data subject rights referenced

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

67/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Arial + Open Sans

WCAG Partial

63/100

Readability

/30

15/30

15px · LH 1.63

Hierarchy

/20

20/20

3.12x ratio · ✓ H1→H6

WCAG

/25

11/25

1:1 min contrast

Performance

/25

17/25

System fonts

Heading Font

Arial

Sans46px

Body Font

Open Sans

Sans15px

Contrast Ratio

1:1

18 issues

Reading Comfort

~37 CPL

Narrow lines

46px

37px

20px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

AAdobe FontsFlesch 34

Color Palette

12 unique colors

8.97:1 AAA Light

#ffffff

Background· 19.4%

#4a4949

Other· 7.5%

#0d1c2d

Primary· 15.100000000000001%

#262930

Text· 10.8%

#dad4b3

Secondary· 8.2%

#313a42

Secondary· 6.6%

#030710

Primary· 5.2%

#dcb651

Accent· 5%

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(6)ulster.ac.uk(5)connect.facebook.net(2)scripts.clarity.ms(1)snap.licdn.com(1)

Website Identity

Ulster University

CollegeOrUniversity

internationalstudents@ulster.ac.uk

+442894335004

www.ulster.ac.uk

Location detected: 🇬🇧 United Kingdomvia phone

📧 Microsoft 365en-GB

Social Profiles

Facebook X (Twitter)Instagram YouTube TikTok Bluesky

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Last analyzed: 22 Apr 2026 at 16:30

Historical Analysis & Change Tracking