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

joins.com

https://joins.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

joins.com

Mobile

Sponsored

Hosting Provider

Kornet

IP Address

211.218.152.146

Server Location

🇰🇷 Sokcho, South Korea

ASN

AS4766

Organization

Kornet

Server

Microsoft IIS

Nameservers

a7-64.akam.net.a1-127.akam.net.a28-64.akam.net.a26-64.akam.net.+2 more

Performance

Page Speed

1 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Kornet

Technology Stack

2 Technologies Detected

Web Servers

Microsoft IISv7.5

Frameworks

ASP.NET

SEO Analysis

F35/100

joins.comjoins.com

서비스 종료 안내

No description available for this page.

Title Length9 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

288d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

28.10.2025

Valid Until

28.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.joins.comjoins.com

SHA-256 Fingerprint

49:E5:2B:D6:AF:AF:FD:B3:98:9F:42:7B:55:37:E8:F8:99:7E:DD:02...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

content-length

1063

content-type

text/html

date

Fri, 13 Feb 2026 03:00:21 GMT

etag

"bc612ef0e6f9da1:0"

last-modified

Thu, 29 Aug 2024 07:42:02 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (4)

sniper2.joongang.co.kr

sniper2.joins.net

sniper.joins.net

smtpsend.joins.com

Domain Information

joins.com

Domain Age

26y 2m

Created

06.12.1999

Expires

06.12.2026

Last Updated

26.06.2025

Registrar

Whois Corp.

DNSSEC

Not Enabled

Typography & Readability

Noto Sans KR + sans-serif

70/100

Readability

/30

32/40

14px · LH 1.57

Hierarchy

/20

15/25

1.43x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Noto Sans KR

Sans20px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

20px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.57 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.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Sponsored

Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Sponsored

Last analyzed: 13 Feb 2026 at 03:00

Historical Analysis & Change Tracking