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japanarts.co.jp

https://japanarts.co.jp· First analyzed 24 May 2026· Updated 24 May 2026
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japanarts.co.jp
Desktop screenshot of japanarts.co.jp
Mobile screenshot of japanarts.co.jp
Mobile

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Hosting Provider

SAKURA Internet Inc.

IP Address

133.125.30.167

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS7684

Server

Nginx

Nameservers

dns3.sys.jpdirect.jp.dns1.sys.jpdirect.jp.dns2.sys.jpdirect.jp.

Performance

74

Core Web Vitals

Weight

First Contentful Paint
3.6 s10%
Speed Index
4.6 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
308 KB
73 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv5.4.19
cms
JP-artsv1Custom
by JP-arts

Technology Stack

12 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Plugins

3
WP Rocket
Yoast SEO
WP Rocket

Libraries

1
jQueryv3.3.1

UI Components

1
Slick Carousel

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Advertising

1
Twitter Ads

Web Servers

1
Nginx

SEO Analysis

C69/100
20
8
1
Meta Tags10/15
Content10/12
Headings3/8
Technical20/25
E-E-A-T0/7
Images5/7
Links4/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
J
japanarts.co.jpjapanarts.co.jp

クラシック音楽事務所ジャパン・アーツクラシック音楽事務所ジャパン・アーツ

クラシック音楽事務所のジャパン・アーツ。海外のアーティスト、クラシック音楽、バレエ、オペラを招聘・主催すると同時に、多くの日本人アーティストのマネージメント、コンサートを行っています。

Title Length36 chars

Recommended: 50-60 chars (~223px / 580px)

Description Length92 chars

Recommended: 120-160 chars

Issues (1)

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

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

18 URLs

18 sub-sitemaps

robots.txt

3 rules

Local SEO

Local Search Readiness

18/100
Poor
5 12 1

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

Sponsored

AI & LLM Readiness

D45/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
3/25
Citation
8/25

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. listsnavheader/footer
Text ratio:6%
Words:647
Token eff.:Optimal
Sections/1K:34
Depth:3/5

Structured Data

2 JSON-LD
WebSiteSearchAction

Citation Readiness

Opening Summary11w
Descriptive Headingsavg 2.5w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

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.
B
73/100
12
Passed
3
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
47/100
A+
38 mg
CO₂e / view
307.9 KB
Page Weight
90%
Cleaner Than
New Visitor
44 mg
vs
Returning (cached)
22 mg
Annual (10K/mo)
4.6 kg
Emission Segments
Data Center
9 mg
Network
9 mg
Device
20 mg
Resource Breakdown
JavaScript
215.6 KB
Images
684 B
HTML
91.6 KB
Green Hosting Not Verified
SAKURA Internet Inc.
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

44d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

09.04.2026

Valid Until

08.07.2026

Subject Alternative Names (1)

japanarts.co.jp

SHA-256 Fingerprint

1B:77:53:3E:B7:B5:42:C5:0E:AC:73:40:FF:FA:B6:33:5F:FD:FF:12...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

content-type
text/html; charset=UTF-8
date
Sun, 24 May 2026 19:46:10 GMT
link
<https://www.japanarts.co.jp/wp-json/>; rel="https://api.w.o...
server
nginx
set-cookie
mw-wp-form-token
Good Warning Issue

Email Infrastructure

Google Workspace

Score

45

SPF
DKIM
DMARC

MX Records (6)

aspmx.l.google.com
aspmx3.googlemail.com
aspmx2.googlemail.com
alt2.aspmx.l.google.com

+2 more

Domain Information

japanarts.co.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.
B
72/100
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

Noto Sans JP

WCAG Partial
65/100
Readability
/30
23/30

20px · LH 1.50

Hierarchy
/20
12/20

0.7x ratio · ✓ H1→H6

WCAG
/25
14/25

2.75:1 min contrast

Performance
/25
16/25

2 fonts

Heading Font

Noto Sans JP

Sans14px

Body Font

Noto Sans JP

Sans20px

Contrast Ratio

2.75:1

14 issues

Reading Comfort

~36 CPL

Narrow lines
14px
h1
30px
h2
16px
h3
20px
p
Perfect Fourth
Scale

✅ Excellent readability: 20px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 23/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 2.8:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFlesch 23

Color Palette

7 unique colors
Light
#ffffff
Background· 19.200000000000003%
#383224
Primary· 34.8%
#e1dad0
Secondary· 13.3%
#afa07d
Secondary· 11.4%
#181210
Secondary· 8.9%
#cfc4b7
Secondary· 7%
#76665e
Secondary· 5.5%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

2
Facebook PixelMid-Market
Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

2

Categories

4

Total Tools

0

Enterprise

2

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

23 Resources

20
Scripts
3
Styles
18
Async
1
Defer

Top Script Sources

googletagmanager.com(6)js.fout.jp(4)connect.facebook.net(4)google-analytics.com(2)japanarts.co.jp(2)

Website Identity

クラシック音楽事務所ジャパン・アーツ

クラシック音楽事務所のジャパン・アーツ。海外のアーティスト、クラシック音楽、バレエ、オペラを招聘・主催すると同時に、多くの日本人アーティストのマネージメント、コンサートを行っています。

0570001212
www.japanarts.co.jp/
Location detected: 🇯🇵 Japanvia tld
📧 Google Workspace

Sponsored

Last analyzed: 24 May 2026 at 19:46

Historical Analysis & Change Tracking