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.

Back to Search

ysl.com

https://ysl.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

ysl.com

Sponsored

Hosting Provider

Akamai International BV

IP Address

80.239.150.80

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS1299

Organization

Akamai International BV

CDN

Akamai

WAF

Akamai

Nameservers

dns2.comlaude-dns.net.dns3.comlaude-dns.co.uk.dns4.comlaude-dns.eu.dns1.comlaude-dns.com.

Performance

Page Speed

848 KB

81 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

JAMstack

⚙️ SSR

Decoupled

Frontend

Framework

Next.js

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Akamai International BV

CDN

Akamai

Detected API Sources

https://api.cappasity.com/api/...

Technology Stack

7 Technologies Detected

Meta Frameworks

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

Other

Customer Support

SEO Analysis

B76/100

ysl.comysl.com

Saint Laurent Official Online Store | YSL.com

Discover the Saint Laurent official online store. Explore the latest collections of handbags, ready to wear, shoes, leather goods and accessories for men and...

Description truncated.

Title Length45 chars

Recommended: 50-60 chars

Description Length164 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

3 issues found

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Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

19d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

Valid From

10.12.2025

Valid Until

10.03.2026

Subject Alternative Names (3)

SHA-256 Fingerprint

2A:45:8D:D6:3F:6B:07:74:9E:58:56:60:90:EF:29:24:BD:7D:E2:40...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

akamai-cache-status

Hit from child

alt-svc

h3=":443"; ma=93600

cache-control

🔴 No Cache(max-age=0, no-cache)

content-encoding

⚡ Brotli(br)

content-security-policy

default-src * blob: ws: wss: gap://ready 'unsafe-inline' 'un...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

mail1.kering.net

mail2.kering.net

mail.pprgroup.net

Domain Information

ysl.com

Domain Age

27y 10m

Created

22.04.1998

Expires

21.04.2026

Last Updated

22.03.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Typography & Readability

Helvetica_Reg

36/100

Readability

/30

5/40

12px · LH 1.00

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica_Reg

Sans

Body Font

Helvetica_Reg

Sans12px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

12px

Minor Second

Scale

❌ Critical: 12px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ 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.

⚠️ Cramped layout: 17 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Microsoft ClarityFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

AB TastyMid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)cdn.cookielaw.org(1)s.go-mpulse.net(1)api.cappasity.com(1)try.abtasty.com(1)

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Last analyzed: 18 Feb 2026 at 07:06

Historical Analysis & Change Tracking