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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geoguessr.com

https://geoguessr.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

geoguessr.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.1.96

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

veda.ns.cloudflare.com.etienne.ns.cloudflare.com.

Performance

Page Speed

1.7 MB

111 requests

Image Optimization

Lazy LoadWebPResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

Hybrid

⚙️ SSR

Frontend

Framework

Next.js

CMS

Ghost

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel FullStory

Meta Frameworks

Frameworks

Other

Fonts

Tag Managers

Advertising

CDN

SEO Analysis

B76/100

geoguessr.comgeoguessr.com

GeoGuessr - Let's explore the world!

GeoGuessr is a geography game which takes you on a journey around the world and challenges your ability to recognize your surroundings.

Title Length36 chars

Recommended: 50-60 chars

Description Length135 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Sitemap reference found

Sponsored

Security Score

46%Poor

Interactive

HTTPS

WAF

70d

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

31.01.2026

Valid Until

01.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

geoguessr.com*.geoguessr.com

SHA-256 Fingerprint

B7:24:12:3A:41:69:F6:F8:CB:24:7A:08:D6:86:18:A2:57:DA:A6:20...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

297

cache-control

🟡 311s(max-age=311)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9d0a9253facbd369-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self' *.geoguessr.com

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

geoguessr-com.mail.protection.outlook.com

Domain Information

geoguessr.com

Domain Age

12y 10m

Created

17.04.2013

Expires

17.04.2026

Last Updated

28.07.2025

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

ggFont

68/100

Readability

/30

32/40

16px · LH 1.25

Hierarchy

/20

18/25

4.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

ggFont

Sans72px

Body Font

ggFont

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

72px

20px

18px

16px

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

✅ Strong hierarchy: Headlines are 4.5x 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.

✅ 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

7 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

HotjarMid-Market

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Google 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

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)connect.facebook.net(2)static.anonymised.io(1)btloader.com(1)cdn.snigelweb.com(1)

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Last analyzed: 20 Feb 2026 at 02:28

Historical Analysis & Change Tracking