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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fendi.com

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

Export

fendi.com

Mobile

Sponsored

Hosting Provider

Akamai Technologies

IP Address

2.20.142.72

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS20940

CDN

Akamai

WAF

Akamai

Nameservers

a26-64.akam.net.a7-65.akam.net.a20-67.akam.net.a9-66.akam.net.+2 more

Performance

Page Speed

153 KB

1 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Akamai Technologies

CDN

Akamai

SEO Analysis

F23/100

fendi.comfendi.com

Access Denied

No description available for this page.

Title Length13 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

Upgrade to view details

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

145d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

01.01.2026

Valid Until

15.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.fendi.comapi-fendi100game.fendi.comarnaldopomodoro.fendi.combaguette.fendi.combi.ls.fendi.combooxp.fendi.comcctv.fendi.comfen-currency-api.fendi.com+12 more

SHA-256 Fingerprint

2D:BE:8A:C8:35:14:35:E2:27:3F:73:D4:9E:4E:E0:ED:E0:13:8C:32...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

mime-version

1.0

content-type

text/html

x-akamai-transformed

0 - 0 -

expires

Fri, 20 Feb 2026 02:26:27 GMT

cache-control

🔴 No Cache(max-age=0, no-cache, no-store)

pragma

no-cache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-0024c501.gslb.pphosted.com

mxb-0024c501.gslb.pphosted.com

Domain Information

fendi.com

Domain Age

30y 2m

Created

26.12.1995

Expires

25.12.2026

Last Updated

26.12.2025

Registrar

DNSSEC

Not Enabled

Typography & Readability

serif

80/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

serif

Serif32px

Body Font

serif

Serif16px

Contrast Ratio

Reading Comfort

~183 CPL

Needs attention

32px

16px

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

✅ Consistent design: Single font family with weight variations is a modern best practice.

❌ Very long lines: ~183 chars/line causes eye strain. Use max-width: 65ch.

✅ Clean layout: Consistent left alignment throughout.

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)

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Last analyzed: 20 Feb 2026 at 02:27

Historical Analysis & Change Tracking