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

yna.co.kr

https://yna.co.kr· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

yna.co.kr

Mobile

Sponsored

Hosting Provider

KORNET

IP Address

211.33.130.21

Server Location

🇰🇷 Gwacheon, South Korea

ASN

AS4766

Organization

KORNET

CDN

Nameservers

ns2.kornet.ne.kr.dns.yonhapnews.co.kr.

Performance

Page Speed

239 KB

118 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

KORNET

CDN

Technology Stack

6 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Google Tag Manager

Advertising

Google Ads Google AdSense

CSS Frameworks

Tailwind CSS

SEO Analysis

A82/100

yna.co.kryna.co.kr

연합뉴스

연합뉴스는 새로운 시대에 걸맞은 멀티미디어 콘텐츠로 다양한 상품, 다양한 뉴스를 생산하고 있습니다.

Title Length4 chars

Recommended: 50-60 chars

Description Length55 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

136 rules

Sitemap reference found

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

129d

Certificate Details

Type

Domain Validated (DV)

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

30.05.2025

Valid Until

21.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.yna.co.kryna.co.kr

SHA-256 Fingerprint

68:4A:2E:C1:8C:73:B4:89:CF:70:21:43:2E:E7:D1:FC:92:00:E0:25...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

28918

content-type

text/html;charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (3)

nmail.yna.co.kr

nmail2.yna.co.kr

nmail1.yna.co.kr

Domain Information

yna.co.kr

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Malgun Gothic

70/100

Readability

/30

32/40

15px · LH 1.50

Hierarchy

/20

15/25

1.07x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Malgun Gothic

Sans16px

Body Font

Malgun Gothic

Sans15px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

16px

1px

16px

15px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ Good performance: Using 1 font families keeps load times fast.

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

r.yna.co.kr(8)static.pfrt.yna.co.kr(3)gstatic.com(2)ad.yna.co.kr(2)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 12 Feb 2026 at 22:05

Historical Analysis & Change Tracking