nipponbudokan.or.jp

https://nipponbudokan.or.jp· First analyzed 15 May 2026· Updated 15 May 2026

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nipponbudokan.or.jp

Mobile

Sponsored

Hosting Provider

IDC Frontier Inc.

IP Address

164.46.105.201

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS4694

Organization

IDC Frontier Inc.

Server

Apache

Nameservers

ns-545.awsdns-04.net.ns-1534.awsdns-63.org.ns-1896.awsdns-45.co.uk.ns-402.awsdns-50.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

3.3 s10%

Speed Index

4.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

8.5 MB

103 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

budokanCustom

Technology Stack

8 Technologies Detected

Libraries

jQuery

jQuery UI

UI Components

Slick Carousel Lightbox

Analytics

CSS Frameworks

Web Servers

SEO Analysis

D59/100

Meta Tags5/15

Content9/12

Headings8/8

Technical16/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile3/4

Indexability3/3

nipponbudokan.or.jpnipponbudokan.or.jp

日本武道館

description text

Title Length5 chars

Recommended: 50-60 chars (~31px / 580px)

Description Length16 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (27/36) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

11 URLs

11 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

8/100

Poor

2 13 2

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.

19/25

Schema Data

0/25

Citation

6/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

def. listsnavheader/footer

Text ratio:6%

Words:343

Token eff.:Optimal

Sections/1K:26.2

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

85/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

11/15

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

ARIA & Roles

9/15

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.

9/100

1.07 g

CO₂e / view

8.5 MB

Page Weight

Cleaner Than

New Visitor

1.23 g

Returning (cached)

613 mg

Annual (10K/mo)

128.8 kg

Emission Segments

Data Center

240 mg

Network

258 mg

Device

576 mg

Resource Breakdown

JavaScript

1.0 MB

Images

6.9 MB

CSS

433.1 KB

HTML

87.7 KB

Green Hosting Not Verified

IDC Frontier Inc.

10 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

31%Critical

Interactive

HTTPS

No WAF

298d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

05.02.2026

Valid Until

09.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.nipponbudokan.or.jpnipponbudokan.or.jp

SHA-256 Fingerprint

88:CF:01:43:F5:B8:46:3C:D2:2B:F4:34:F3:34:B7:22:51:67:B8:D0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Fri, 15 May 2026 03:17:51 GMT

keep-alive

timeout=2, max=300

link

<https://www.nipponbudokan.or.jp/wp-json/>; rel="https://api...

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.nipponbudokan.or.jp

Domain Information

nipponbudokan.or.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

66/100

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.

Viewport

initial-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

游ゴシック体

WCAG Partial

69/100

Readability

/30

18/30

14px · LH 1.50

Hierarchy

/20

18/20

2x ratio · ✓ H1→H6

WCAG

/25

17/25

2.52:1 min contrast

Performance

/25

16/25

1 font

Heading Font

游ゴシック体

Sans28px

Body Font

游ゴシック体

Sans14px

Contrast Ratio

2.52:1

25 issues

Reading Comfort

Single Font Family

left aligned

28px

21px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

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

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 2.5:1).

✅ 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.

Buy on MyFonts

Color Palette

9 unique colors

4.92:1 AA Light

#ffffff

Background· 15.100000000000001%

#6d707d

Other· 4%

#202140

Primary· 25.9%

#4e607d

Secondary· 25.9%

#050504

Text· 11.2%

#ac5659

Secondary· 5.8%

#14151e

Secondary· 4.8%

#5e4248

Secondary· 3.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

r.bing.com(10)nipponbudokan.or.jp(6)cse.google.com(1)googletagmanager.com(1)bing.com(1)

Website Identity

nipponbudokan.or.jp

Location detected: 🇯🇵 Japanvia tld

ja-JP

Social Profiles

X (Twitter)Instagram YouTube

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Last analyzed: 15 May 2026 at 03:18

Historical Analysis & Change Tracking