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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.

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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.

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classicfm.com

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

Export

classicfm.com

Sponsored

Hosting Provider

Global Radio Limited

IP Address

81.20.53.12

Server Location

🇬🇧 Forest Hill, United Kingdom

ASN

AS39202

Organization

Global Radio Limited

Nameservers

ns2.as39202.co.uk.ns1.as39202.net.ns0.as39202.net.

Performance

Page Speed

886 KB

71 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Global Radio Limited

Technology Stack

6 Technologies Detected

Meta Frameworks

Libraries

CSS Frameworks

Analytics

Tag Managers

Advertising

SEO Analysis

A84/100

classicfm.comclassicfm.com

Classic FM | The Most Relaxing Music

The Most Relaxing Music. Listen live to Classic FM radio online. Discover classical music and find out more about the best classical composers, musicians and...

Description truncated.

Title Length36 chars

Recommended: 50-60 chars

Description Length170 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

Type: index

960 URLs

robots.txt

31 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

103d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

25.11.2025

Valid Until

31.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

*.classicfm.comclassicfm.comhalloffame.classicfm.com

SHA-256 Fingerprint

E6:23:74:95:36:4F:53:94:7C:8B:80:E6:29:AC:AF:FD:43:13:78:55...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

content-encoding

📦 Gzip(gzip)

content-length

32729

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 21:29:43 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

classicfm-com.mail.protection.outlook.com

Domain Information

classicfm.com

Domain Age

30y 6m

Created

25.08.1995

Expires

24.08.2026

Last Updated

25.08.2025

Registrar

TLDS L.L.C. d/b/a SRSPlus

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Lora

70/100

Readability

/30

32/40

20px · LH 1.30

Hierarchy

/20

15/25

0.8x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Lora

Serif16px

Body Font

Lora

Serif20px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

16px

15px

20px

Minor Second

Scale

✅ Excellent readability: 20px body text is ideal for all devices.

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

✅ 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)securepubads.g.doubleclick.net(2)googletagmanager.com(1)d.sourcepoint.classicfm.com(1)

Website Identity

Facebook Instagram YouTube

Sponsored

Last analyzed: 17 Feb 2026 at 21:29

Historical Analysis & Change Tracking