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culture.gr.jp

https://culture.gr.jp· First analyzed 29 May 2026· Updated 29 May 2026
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culture.gr.jp
Desktop screenshot of culture.gr.jp
Mobile screenshot of culture.gr.jp
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

18.178.184.41

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Nginx

Nameservers

ns2.namedserver.net.ns.namedserver.net.

Performance

85

Core Web Vitals

Weight

First Contentful Paint
1.8 s10%
Speed Index
2.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
9.9 MB
85 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQuery

UI Components

1
Swiper

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

C64/100
18
9
1
Meta Tags8/15
Content12/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
C
culture.gr.jpculture.gr.jp

カルチャーセンター「一流の講師とすばらしい仲間」株式会社カルチャー

「一流の講師とすばらしい仲間」をモットーに全国でカルチャーセンターを展開している株式会社カルチャーのホームページです。

Title Length33 chars

Recommended: 50-60 chars (~204px / 580px)

Description Length59 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

19,047 URLs

robots.txt

4 rules

Local SEO

Local Search Readiness

6/100
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

D44/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
0/25
Citation
11/25

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
def. lists
Text ratio:3%
Words:623
Token eff.:Optimal
Sections/1K:109.1
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1.2w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
C
67/100
10
Passed
1
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
2/15
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.
34/100
F
1.02 g
CO₂e / view
9.9 MB
Page Weight
5%
Cleaner Than
New Visitor
1.17 g
vs
Returning (cached)
585 mg
Annual (10K/mo)
122.9 kg
Emission Segments
Data Center
50 mg
Network
301 mg
Device
673 mg
Resource Breakdown
JavaScript
98.2 KB
Images
9.6 MB
CSS
104.1 KB
Fonts
85.1 KB
HTML
19.0 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
6 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

21%Critical
Interactive

HTTPS

No WAF

86d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

25.05.2026

Valid Until

23.08.2026

Subject Alternative Names (2)

culture.gr.jpwww.culture.gr.jp

SHA-256 Fingerprint

B4:DF:57:01:2C:2A:7E:3A:4E:5D:C2:92:61:8F:A3:21:1E:27:3A:D1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, private)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Fri, 29 May 2026 00:22:29 GMT
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

mx.culture.gr.jp

Domain Information

culture.gr.jp

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.
C
67/100
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

Typography & Readability

Zen Kaku Gothic New

WCAG Partial
71/100
Readability
/30
22/30

16px · LH 1.75

Hierarchy
/20
15/20

2x ratio · ✓ H1→H6

WCAG
/25
14/25

2.17:1 min contrast

Performance
/25
20/25

1 font · 1 req

Heading Font

Zen Kaku Gothic New

Sans32px

Body Font

Zen Kaku Gothic New

Sans16px

Contrast Ratio

2.17:1

3 issues

Reading Comfort

Single Font Family

left aligned
32px
h1
45px
h2
32px
h3
16px
p
Minor Second
Scale

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 2.2:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

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

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle Fonts

Color Palette

5 unique colors
Light
#e8e0cb
Primary· 77.90000000000002%
#fef6df
Accent· 11.799999999999999%
#d1c4a5
Secondary· 3.8%
#78876a
Secondary· 2.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

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

15 Resources

10
Scripts
5
Styles
2
Async
0
Defer

Top Script Sources

local(8)googletagmanager.com(2)

Website Identity

culture.gr.jp

Location detected: 🇯🇵 Japanvia tld
ja

Social Profiles

Instagram

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Last analyzed: 29 May 2026 at 00:23

Historical Analysis & Change Tracking