yamato-museum.com

https://yamato-museum.com· First analyzed 21 May 2026· Updated 21 May 2026

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yamato-museum.com

Mobile

Sponsored

Hosting Provider

XSERVER Inc.

IP Address

85.131.197.164

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS131965

Organization

XSERVER Inc.

Server

Nginx

Nameservers

ns3.xserver.jp.ns1.xserver.jp.ns5.xserver.jp.ns2.xserver.jp.+1 more

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

14.5 MB

87 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.1.6

Infrastructure

Hosting

XSERVER Inc.

Technology Stack

9 Technologies Detected

CSS Frameworks

Analytics

Icon Libraries

Fonts

Tag Managers

Web Servers

Plugins

SEO Analysis

C67/100

Meta Tags14/15

Content8/12

Headings3/8

Technical19/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile3/4

Indexability3/3

yamato-museum.comyamato-museum.com

大和ミュージアム（呉市海事歴史科学館） - 巨大戦艦「大和」の残したメッセージ『歴史を未来へ』

巨大戦艦「大和」の残したメッセージ『歴史を未来へ』 - 呉市海事歴史科学館「大和ミュージアム」は、世界最大の戦艦「大和」を中心に、明治以降における日本の近代化の歴史そのものである「呉の歴史」その礎となった造船・科学技術を紹介する博物館です。

Title Length49 chars

Recommended: 50-60 chars (~303px / 580px)

Description Length122 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (33/57) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

5 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

D41/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

0/25

Citation

10/25

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:4%

Words:370

Token eff.:Optimal

Sections/1K:21.6

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph2/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

74/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

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

5/15

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

4 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.

13/100

1.84 g

CO₂e / view

14.5 MB

Page Weight

Cleaner Than

New Visitor

2.10 g

Returning (cached)

1.05 g

Annual (10K/mo)

220.6 kg

Emission Segments

Data Center

411 mg

Network

441 mg

Device

987 mg

Resource Breakdown

JavaScript

66.5 KB

Images

3.3 MB

CSS

1.6 MB

Fonts

116.2 KB

HTML

22.3 KB

Other

9.4 MB

Green Hosting Not Verified

XSERVER Inc.

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

32d

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/2

Valid From

25.03.2026

Valid Until

23.06.2026

Subject Alternative Names (2)

www.yamato-museum.comyamato-museum.com

SHA-256 Fingerprint

8A:E2:D9:EE:1E:B2:1D:DA:F6:BE:CF:5B:40:35:BD:21:E3:70:88:81...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 19:33:30 GMT

link

<https://yamato-museum.com/wp-json/>; rel="https://api.w.org...

server

nginx

strict-transport-security

max-age=31536000; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

yamato-museum.com

Domain Information

yamato-museum.com

Domain Age

18y 3m

Created

20.02.2008

Expires

20.02.2027

Last Updated

21.01.2026

Registrar

GMO Internet Group, Inc. d/b/a Onamae.com

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

74/100

Mobile Friendly2 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

width=device-width, initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Noto Sans JP

WCAG AAA

74/100

Readability

/30

26/30

18px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

23/25

14.23:1 min contrast

Performance

/25

18/25

1 font · 4 req

Heading Font

Noto Sans JP

Sans

Body Font

Noto Sans JP

Sans18px

Contrast Ratio

14.23:1

WCAG AAA (≥7:1)

Reading Comfort

~32 CPL

Narrow lines

45px

22px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 14.2:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ 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

11 unique colors

Light

#a6a19f

Other· 6.3%

#58443d

Secondary· 16.4%

#7c5c4e

Secondary· 16.3%

#8a7267

Secondary· 15.299999999999999%

#e5decd

Primary· 9.9%

#a78b78

Secondary· 8.3%

#40302a

Secondary· 7.3%

#cab19e

Secondary· 5.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

yamato-museum.com(7)googletagmanager.com(3)local(1)challenges.cloudflare.com(1)cdn.jsdelivr.net(1)

Website Identity