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.

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guinnessworldrecords.com

https://guinnessworldrecords.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

$Desktop screenshot of guinnessworldrecords.com$

$Mobile screenshot of guinnessworldrecords.com$

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.206.51

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

CloudFront

CDN

CloudFront

Nameservers

ns-330.awsdns-41.com.ns-582.awsdns-08.net.ns-1101.awsdns-09.org.ns-1968.awsdns-54.co.uk.

Performance

Page Speed

3.5 MB

98 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Detected API Sources

https://cdn.id5-sync.com/api/1...

Technology Stack

10 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

LinkedIn Ads Microsoft Advertising

Libraries

UI Components

CSS Frameworks

Tag Managers

CDN

SEO Analysis

A80/100

guinnessworldrecords.comguinnessworldrecords.com

Home | Guinness World Records

The Guinness World Records official site with ultimate record-breaking facts & achievements. Do you want to set a world record? Are you Officially Amazing?

Title Length29 chars

Recommended: 50-60 chars

Description Length155 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

Type: index

3 URLs

robots.txt

36 rules

Sponsored

Security Score

36%Critical

Interactive

HTTPS

No WAF

387d

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

06.02.2026

Valid Until

06.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.guinnessworldrecords.comguinnessworldrecords.com

SHA-256 Fingerprint

18:D8:B9:1F:51:28:0C:6A:37:C8:B5:64:6E:A2:40:D6:47:EB:4F:B2...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

324

cache-control

🔵 1 Days(max-age=86400)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 12 Feb 2026 10:50:42 GMT

server

CloudFront

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

eu-smtp-inbound-1.mimecast.com

eu-smtp-inbound-2.mimecast.com

Domain Information

guinnessworldrecords.com

Domain Age

26y 11m

Created

15.03.1999

Expires

15.03.2026

Last Updated

25.01.2025

Registrar

SafeNames Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

rubik_medium + rubik_regular

54/100

Readability

/30

32/40

24px · LH 1.30

Hierarchy

/20

21/25

2.17x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

rubik_medium

Sans52px

Body Font

rubik_regular

Sans24px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

52px

38px

20px

28px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.2x 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.

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 21 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pi.pardot.com(2)connect.facebook.net(2)google-analytics.com(2)googletagmanager.com(2)bat.bing.com(2)

Website Identity

guinnessworldrecords.com

26 years old

SafeNames Ltd.📧 Mimecast

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok Pinterest

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Last analyzed: 12 Feb 2026 at 10:56

Historical Analysis & Change Tracking