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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.

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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.

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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.

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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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cgjdigital.co.uk

https://cgjdigital.co.uk· First analyzed 20 Mar 2026· Updated 20 Mar 2026

Export

cgjdigital.co.uk

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.92.144

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

summer.ns.cloudflare.com.johnathan.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

440 ms10%

Speed Index

572 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1 MB

11 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Webflow

Technology Stack

6 Technologies Detected

CSS Frameworks

Libraries

Other

Fonts

CDN

SEO Analysis

C61/100

Meta Tags8/15

Content8/12

Headings8/8

Technical13/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

cgjdigital.co.ukcgjdigital.co.uk

CGJDigital

Converting websites for tradespeople that get more enquiries. One-off payments, one week turnaround, SEO-ready. Based in Telford, Shropshire serving the UK n...

Description truncated.

Title Length10 chars

Recommended: 50-60 chars (~58px / 580px)

Description Length167 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (6/6) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

21 rules

Local SEO

Local Search Readiness

7/100

Poor

2 14 2

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

Sponsored

AI & LLM Readiness

F36/100

Bot Access

15/25

Machine Read.

13/25

Schema Data

0/25

Citation

8/25

AI Bot Access

6/14 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

nav

Text ratio:8%

Words:443

Token eff.:Optimal

Sections/1K:9

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 10w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

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.

84/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

Forms & Inputs

15/15

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

11/15

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

ARIA & Roles

3/15

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

1 recommendation

•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.

83/100

124 mg

CO₂e / view

1.2 MB

Page Weight

70%

Cleaner Than

New Visitor

142 mg

Returning (cached)

71 mg

Annual (10K/mo)

14.9 kg

Emission Segments

Data Center

6 mg

Network

36 mg

Device

81 mg

Resource Breakdown

JavaScript

312.9 KB

Images

585.9 KB

CSS

199.8 KB

Fonts

97.7 KB

HTML

30.3 KB

Green Hosting Verified

Cloudflare

Provider Match

2 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

78%Good

Static / Informational

HTTPS

WAF

84d

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

14.03.2026

Valid Until

12.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

cgjdigital.co.uk

SHA-256 Fingerprint

1F:B0:B6:6F:BD:22:94:C3:1C:CA:76:AA:97:71:AF:46:64:12:BC:E7...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(public, max-age=0, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9df4439b187c65bc-FRA

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

cgjdigital.co.uk

DNSSEC

Not Enabled

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.

72/100

Mobile Friendly7 breakpoints

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

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Inter + sans-serif

88/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

8.75x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Inter

Sans140px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

140px

120px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 8.8x 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.

GGoogle Fonts Buy on MyFonts

Color Palette

8 unique colors

3.1:1 AA Large Light

#ffffff

Background· 98.49999999999999%

#869785

Secondary· 0.1%

#316e2a

Primary· 0.3%

#a2b2a0

Secondary· 0.2%

#4a8046

Secondary· 0.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ajax.googleapis.com(1)d3e54v103j8qbb.cloudfront.net(1)js(1)cdn.prod.website-files.com(1)

Website Identity

cgjdigital.co.uk

Social Profiles

Facebook Instagram

Sponsored

Last analyzed: 20 Mar 2026 at 11:09

AI-Powered Analysis

Technical Deep Dive

Technology Analysis for cgjdigital.co.uk

StackOptic has analyzed this website's technology stack. View the detailed breakdown in the sections above.

Analysis by StackOptic AIMar 20, 2026

AI-Powered Insights

Historical Analysis & Change Tracking