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

gmarket.co.kr

https://gmarket.co.kr· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

gmarket.co.kr

Mobile

Sponsored

Hosting Provider

Kornet

IP Address

183.111.134.78

Server Location

🇰🇷 Seongnam-si, South Korea

ASN

AS4766

Organization

Kornet

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-270.awsdns-33.com.ns-725.awsdns-26.net.ns-1514.awsdns-61.org.ns-1956.awsdns-52.co.uk.

Performance

Page Speed

294 KB

175 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Hybrid

⚙️ SSR

Frontend

Framework

Next.js

Infrastructure

Hosting

Kornet

CDN

Cloudflare

Technology Stack

9 Technologies Detected

Analytics

Meta Frameworks

UI Components

Other

CSS Frameworks

Tag Managers

CDN

Customer Support

SEO Analysis

D58/100

gmarket.co.krgmarket.co.kr

G마켓 - 지금부터의 마켓

대한민국 1등 온라인쇼핑, G마켓! 전회원 할인쿠폰. 매일 특가 슈퍼딜. 남다른 혜택 스마일클럽.

Title Length14 chars

Recommended: 50-60 chars

Description Length54 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

19 rules

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

48d

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

09.01.2026

Valid Until

09.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

gmarket.co.kr*.gmarket.co.kr

SHA-256 Fingerprint

73:64:58:A1:45:3E:A1:78:5F:F9:9A:CF:C6:E0:F3:59:79:21:DC:39...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Fri, 20 Feb 2026 06:30:27 GMT

content-type

text/html; charset=utf-8

content-encoding

📦 Gzip(gzip)

x-powered-by

Next.js

origin-agent-cluster

cache-control

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

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mx1.gmarket.co.kr

mx2.gmarket.co.kr

Domain Information

gmarket.co.kr

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

-apple-system

65/100

Readability

/30

22/40

15px · LH --

Hierarchy

/20

18/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

-apple-system

Sans0

Body Font

-apple-system

Sans15px

Contrast Ratio

Reading Comfort

~74 CPL

Optimal (45–75)

16px

24px

19px

31px

15px

Minor Third

Scale

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

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

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

✅ Protected text on images: Using gradient for readability.

✅ Optimal line length: ~74 characters per line is comfortable to read.

⚠️ Cramped layout: 52 elements lack adequate spacing.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)script.gmarket.co.kr(3)static-rescdn.gmarket.co.kr(2)g.alicdn.com(1)googletagmanager.com(1)

Sponsored

Last analyzed: 20 Feb 2026 at 06:31

Historical Analysis & Change Tracking