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

postech.ac.kr

https://postech.ac.kr· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

postech.ac.kr

Mobile

Sponsored

Hosting Provider

Postech

IP Address

141.223.5.166

Server Location

🇰🇷 Pohang, South Korea

ASN

AS3784

Organization

Postech

Nameservers

ns.postech.ac.kr.ns2.postech.ac.kr.

Performance

Page Speed

34.8 MB

116 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Postech

Technology Stack

8 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Analytics

Libraries

UI Components

CSS Frameworks

SEO Analysis

D41/100

postech.ac.krpostech.ac.kr

가치창출대학 POSTECH

No description available for this page.

Title Length14 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (61/76)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

robots.txt

51 rules

Sponsored

Security Score

32%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

cms-container

2d7a086b6572b414

connection

content-language

en-GB

content-security-policy

, frame-ancestors 'self' https://*.postech.ac.kr

content-type

text/html;charset=UTF-8

date

Thu, 19 Feb 2026 17:51:16 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

sniper.postech.ac.kr

Domain Information

postech.ac.kr

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Pretendard

49/100

Readability

/30

40/40

18px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Pretendard

Sans

Body Font

Pretendard

Sans18px

Contrast Ratio

Reading Comfort

~69 CPL

Optimal (45–75)

40px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ 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.

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

GGoogle Fonts AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)cdn.jsdelivr.net(1)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 19 Feb 2026 at 17:51

Historical Analysis & Change Tracking