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

sedaily.com

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

Export

sedaily.com

Sponsored

Hosting Provider

NBP

IP Address

223.130.139.200

Server Location

🇰🇷 Seongnam-si, South Korea

ASN

AS135354

Server

Nginx

Nameservers

ns1-1.ns-ncloud.com.ns1-2.ns-ncloud.com.

Performance

Page Speed

286 KB

125 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

NBP

Technology Stack

10 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Tag Managers

Advertising

Web Servers

SEO Analysis

A88/100

sedaily.comsedaily.com

서울경제

대한민국 최초의 경제신문인 서울경제는 신속하고 정확한 뉴스 전달과 통찰력 있는 분석으로 글로벌 경제가 나아갈 길을 모색합니다.

Title Length4 chars

Recommended: 50-60 chars

Description Length70 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

Type: standard

14 URLs

robots.txt

33 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

209d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

15.09.2025

Valid Until

17.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.sedaily.comsedaily.com

SHA-256 Fingerprint

D6:86:BD:2F:5C:8F:23:E3:71:07:81:23:D6:3C:D3:A0:E2:4B:9D:05...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-language

ko-KR

content-type

text/html;charset=UTF-8

date

Fri, 20 Feb 2026 05:47:34 GMT

server

nginx

transfer-encoding

chunked

was

TMS2

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mailapp.hiworks.co.kr

Domain Information

sedaily.com

Domain Age

24y 8m

Created

18.06.2001

Expires

18.06.2031

Last Updated

18.11.2025

Registrar

Gabia, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Pretendard

53/100

Readability

/30

5/40

12px · LH 3.33

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Pretendard

Sans24px

Body Font

Pretendard

Sans12px

Contrast Ratio

Reading Comfort

~47 CPL

Optimal (45–75)

24px

18px

17px

12px

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

⚠️ Wide line spacing (3.33). Consider 1.4-1.8 for better flow.

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

✅ 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

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.sedaily.com(12)googletagmanager.com(2)gstatic.com(2)player.gliacloud.com(1)youtube.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 20 Feb 2026 at 05:48

Historical Analysis & Change Tracking