career4.co.kr

https://career4.co.kr· First analyzed 27 Apr 2026· Updated 27 Apr 2026

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career4.co.kr

Mobile

Sponsored

Hosting Provider

NHN

IP Address

211.233.50.236

Site Location

🇰🇷 South Koreavia tld

Server Location

🇰🇷 Seongnam-si, South Korea

ASN

AS3786

Organization

NHN

Server

Nginx

Nameservers

hns2.nsgodo.com.hns1.nsgodo.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

285 ms10%

Speed Index

370 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2 KB

2 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

NHN

Technology Stack

1 Technologies Detected

Web Servers

Nginx

SEO Analysis

F26/100

Meta Tags4/15

Content0/12

Headings0/8

Technical13/25

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

career4.co.krcareer4.co.kr

서비스 오류 안내

No description available for this page.

Title Length9 chars

Recommended: 50-60 chars (~55px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Very thin content (13 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

13 issues found

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Crawlability

Sitemap

Type: standard

341 URLs

robots.txt

12 rules

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F23/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

2/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:2%

Words:10

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

6/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

56/100

A+

<0.001 g

CO₂e / view

1.6 KB

Page Weight

95%

Cleaner Than

New Visitor

<0.001 g

Returning (cached)

<0.001 g

Annual (10K/mo)

24 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

HTML

1.6 KB

Green Hosting Not Verified

NHN

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

29d

Certificate Details

Type

Organization Validated (OV)

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

25.04.2025

Valid Until

26.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.nhn.comnhn.com

SHA-256 Fingerprint

90:50:D9:42:B3:47:D0:73:75:42:D3:DB:BD:47:65:CE:BE:87:01:0A...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=euc-kr

date

Mon, 27 Apr 2026 23:13:36 GMT

server

nginx

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

kr1-aspmx1.worksmobile.com

kr1-aspmx2.worksmobile.com

Domain Information

career4.co.kr

DNSSEC

Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

57/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Malgun Gothic

WCAG AA

57/100

Readability

/30

14/30

13px · LH 1.50

Hierarchy

/20

10/20

WCAG

/25

19/25

5.74:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Malgun Gothic

Body Font

Malgun Gothic

Sans13px

Contrast Ratio

5.74:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Family

center aligned

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

6 unique colors

3.18:1 AA Large Light

#ffffff

Background· 98.49999999999999%

#9f8c8c

Secondary· 0.2%

#9d4244

Primary· 0.3%

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Website Identity

career4.co.kr

Location detected: 🇰🇷 South Koreavia tld

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Last analyzed: 27 Apr 2026 at 23:14

Historical Analysis & Change Tracking