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

yes24.com

https://yes24.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

yes24.com

Sponsored

Hosting Provider

Kidc

IP Address

61.111.13.51

Server Location

🇰🇷 Yongsan-dong, South Korea

ASN

AS3786

Organization

Kidc

Server

Yes24.com

Nameservers

ns2.lgdacom.net.ns1.kidc.net.

Performance

Page Speed

206 KB

250 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Kidc

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Libraries

Tag Managers

Advertising

Frameworks

SEO Analysis

C67/100

yes24.comyes24.com

예스24

도서, 티켓, 음반, 굿즈, 커뮤니티까지 문화 전반을 아우르는 국내 대표 문화콘텐츠 플랫폼, 아낌없는 혜택과 총알배송을 경험해보세요.

Title Length4 chars

Recommended: 50-60 chars

Description Length74 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

robots.txt

117 rules

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

197d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

14.08.2025

Valid Until

05.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.yes24.comyes24.com

SHA-256 Fingerprint

A2:99:1F:23:99:44:E1:24:B4:15:5F:54:3C:62:30:DD:9C:25:C0:10...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=ks_c_5601-1987

date

Fri, 20 Feb 2026 02:47:27 GMT

expires

Fri, 20 Feb 2026 02:46:28 GMT

server

Yes24.com

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

smail2.yes24.com

smail.yes24.com

Domain Information

yes24.com

Domain Age

26y 9m

Created

26.05.1999

Expires

26.05.2026

Last Updated

19.04.2025

Registrar

Gabia, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

맑은 고딕 + 돋움

14/100

Readability

/30

5/40

12px · LH 1.00

Hierarchy

/20

8/25

1x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

맑은 고딕

Sans12px

Body Font

돋움

Sans12px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

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.

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

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 101 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

clarity.ms(7)connect.facebook.net(3)scripts.clarity.ms(2)youtube.com(2)googletagmanager.com(2)

Website Identity

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 20 Feb 2026 at 02:48

Historical Analysis & Change Tracking