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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fortnite.com

https://fortnite.com· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

fortnite.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.92.107.81

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-506.awsdns-63.com.ns-574.awsdns-07.net.ns-1369.awsdns-43.org.ns-1743.awsdns-25.co.uk.

Performance

Page Speed

1.2 MB

189 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

Cloudflare

Technology Stack

5 Technologies Detected

Meta Frameworks

CSS Frameworks

Advertising

CDN

Analytics

SEO Analysis

A84/100

fortnite.comfortnite.com

Fortnite | Free-to-Play Cross-Platform Game - Fortnite

Create and play with friends for free in Fortnite. Explore games, concerts, live events and more, or be the last player standing in Battle Royale and Zero Bu...

Description truncated.

Title Length54 chars

Recommended: 50-60 chars

Description Length161 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

Upgrade to view details

Sponsored

Security Score

29%Critical

Interactive

HTTPS

WAF

66d

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

21.01.2026

Valid Until

22.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

fortnite.com*.fortnite.com

SHA-256 Fingerprint

13:FA:33:EE:83:DA:64:B9:74:51:51:03:12:73:B5:17:E5:82:84:33...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Sat, 14 Feb 2026 06:34:37 GMT

content-type

text/html; charset=utf-8

content-encoding

⚡ Brotli(br)

cf-ray🇩🇪 Frankfurt

9cda8a70cd3a4dc3-FRA

cf-cache-status

MISS

cache-control

🟡 0s(must-revalidate, max-age=0, s-maxage=300)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mxa-003d3601.gslb.pphosted.com

mxb-003d3601.gslb.pphosted.com

Domain Information

fortnite.com

Domain Age

15y 8m

Created

26.05.2010

Expires

20.11.2027

Last Updated

19.10.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

HeadingNowVariable + sans-serif

78/100

Readability

/30

40/40

16px · LH 1.75

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

HeadingNowVariable

Sans16px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~75 CPL

Optimal (45–75)

16px

24px

16px

Minor Second

Scale

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

✅ Optimal line spacing: 1.75 ratio ensures comfortable reading.

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ 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.

Variable Fonts

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

components.unrealengine.com(2)cdn.cookielaw.org(2)js.hcaptcha.com(1)tracking.fortnite.com(1)

Website Identity

fortnite.com

15 years old

MarkMonitor Inc.

Sponsored

Last analyzed: 14 Feb 2026 at 06:35

Historical Analysis & Change Tracking