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concerthouse.co.kr

https://concerthouse.co.kr· First analyzed 13 May 2026· Updated 13 May 2026
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concerthouse.co.kr
Desktop screenshot of concerthouse.co.kr
Mobile screenshot of concerthouse.co.kr
Mobile

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Hosting Provider

IP Address

183.111.182.249

Site Location

🇰🇷 South Koreavia tld

Server Location

🇰🇷 Seongnam-si, South Korea

ASN

AS4766

Organization

Kornet

Server

Nginx

Nameservers

ns1.concerthouse.co.kr.ns.concerthouse.co.kr.ns3.concerthouse.co.kr.ns2.concerthouse.co.kr.

Performance

74

Core Web Vitals

Weight

First Contentful Paint
4.4 s10%
Speed Index
5.7 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.6 MB
55 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Kornet

Technology Stack

9 Technologies Detected

CSS Frameworks

2

Icon Libraries

2

Libraries

1

Tag Managers

1

Web Servers

1

SEO Analysis

D49/100
11
12
2
Meta Tags5/15
Content7/12
Headings3/8
Technical11/21
E-E-A-T3/7
Images2/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile1/4
Indexability3/3
C
concerthouse.co.krconcerthouse.co.kr

콘서트하우스

콘서트하우스는 관객중심의 공연문화와 다양한 문화예술공간을 만듭니다. 충북 청주 공연 전시 안내.

Title Length6 chars

Recommended: 50-60 chars (~37px / 580px)

Description Length53 chars

Recommended: 120-160 chars

Issues (2)

  • Missing H1 tag — every page should have exactly one H1
  • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

Local SEO

Local Search Readiness

5/100
Poor
2 13 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

F38/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
0/25
Citation
16/25

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
navheader/footer
Text ratio:2%
Words:165
Token eff.:Too Short
Sections/1K:6.1
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary31w
Descriptive Headingsavg 2w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
D
48/100
8
Passed
6
Critical
4
Warnings
Images & Alt Text
10/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
0/15
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
6/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
5 recommendations
  • Accessibility recommendation preview...

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.
16/100
E
335 mg
CO₂e / view
2.6 MB
Page Weight
30%
Cleaner Than
New Visitor
382 mg
vs
Returning (cached)
191 mg
Annual (10K/mo)
40.1 kg
Emission Segments
Data Center
75 mg
Network
80 mg
Device
180 mg
Resource Breakdown
JavaScript
259.5 KB
Images
22.4 KB
CSS
2.3 MB
HTML
35.4 KB
Green Hosting Not Verified
Kornet
6 recommendations
  • Carbon footprint recommendation preview...
F

Security Score

0%Critical
Critical / Transactional

No SSL

No WAF

nulld

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

cache-control
🟡 0s(pre-check=0, post-check=0, max-age=0)
connection
close
content-type
text/html; charset=utf-8
date
Wed, 13 May 2026 17:42:08 GMT
expires
0
last-modified
Wed, 13 May 2026 17:42:08 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

70

SPF
DKIM
DMARC

MX Records (2)

rmw-002.fmcity.com
rabn-010.cafe24.com

Domain Information

concerthouse.co.kr

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
D
40/100
Not Mobile Friendly6 breakpoints
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.
4 recommendations
  • Mobile compatibility recommendation preview...

Typography & Readability

Malgun Gothic

WCAG Partial
48/100
Readability
/30
16/30

13px · LH 1.70

Hierarchy
/20
9/20
WCAG
/25
14/25

1:1 min contrast

Performance
/25
9/25

2 fonts · 8 req

Heading Font

Malgun Gothic

Sans

Body Font

Malgun Gothic

Sans13px

Contrast Ratio

1:1

7 issues

Reading Comfort

~48 CPL

Optimal (45–75)
16px
h2
13px
p

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

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

✅ Lean font stack: 2 font families keeps load times fast.

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

⚠️ High font requests: 8 font files loaded. Consider variable fonts or subsetting.

Color Palette

8 unique colors
12.63:1 AAA Light
#ffffff
Background· 70.7%
#333333
Text· 5.3999999999999995%
#baadaa
Primary· 2.6%
#f0efeb
Secondary· 1.8%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

26 Resources

16
Scripts
10
Styles
1
Async
0
Defer

Top Script Sources

concerthouse.co.kr(15)googletagmanager.com(1)

Website Identity

concerthouse.co.kr

Location detected: 🇰🇷 South Koreavia tld
ko

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Last analyzed: 13 May 2026 at 17:42

Historical Analysis & Change Tracking