shugakukai.co.jp

https://shugakukai.co.jp· First analyzed 13 May 2026· Updated 13 May 2026

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shugakukai.co.jp

Mobile

Sponsored

Hosting Provider

SAKURA Internet Inc.

IP Address

160.16.90.60

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS9370

Organization

SAKURA Internet Inc.

Server

Nginx

Nameservers

ns2.dns.ne.jp.ns1.dns.ne.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.2 s10%

Speed Index

2.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

486 KB

33 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

SAKURA Internet Inc.

Technology Stack

11 Technologies Detected

CSS Frameworks

Analytics

Plugins

Wysija Newsletters Download Manager

Libraries

Icon Libraries

Tag Managers

Web Servers

Languages

SEO Analysis

D51/100

Meta Tags4/15

Content7/12

Headings7/8

Technical14/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

shugakukai.co.jpshugakukai.co.jp

秀学会

No description available for this page.

Title Length3 chars

Recommended: 50-60 chars (~18px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

60 URLs

60 sub-sitemaps

robots.txt

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

F31/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

5/25

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

blockquotesnavheader/footer

Text ratio:4%

Words:89

Token eff.:Too Short

Sections/1K:40

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.8w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

64/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

14/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

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.

3 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.

48/100

60 mg

CO₂e / view

486.1 KB

Page Weight

90%

Cleaner Than

New Visitor

69 mg

Returning (cached)

34 mg

Annual (10K/mo)

7.2 kg

Emission Segments

Data Center

13 mg

Network

14 mg

Device

32 mg

Resource Breakdown

JavaScript

73.6 KB

Images

263.2 KB

CSS

142.9 KB

HTML

6.5 KB

Green Hosting Not Verified

SAKURA Internet Inc.

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

26%Critical

Interactive

HTTPS

WAF

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/1.1

Valid From

19.02.2026

Valid Until

20.05.2026

Subject Alternative Names (1)

shugakukai.co.jp

SHA-256 Fingerprint

6D:98:DB:C9:C4:19:08:64:70:32:CC:18:D2:BE:98:7D:5C:14:E0:76...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Wed, 13 May 2026 22:22:01 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

www3481.sakura.ne.jp

Domain Information

shugakukai.co.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.

52/100

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,minimum-scale=1,maximum-scale=1,user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

メイリオ

WCAG Partial

62/100

Readability

/30

20/30

14px · LH 1.60

Hierarchy

/20

13/20

3.21x ratio

WCAG

/25

14/25

2.53:1 min contrast

Performance

/25

15/25

1 font · 1 req

Heading Font

メイリオ

Sans45px

Body Font

メイリオ

Sans14px

Contrast Ratio

2.53:1

3 issues

Reading Comfort

~45 CPL

Narrow lines

45px

22px

14px

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 2.5:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 3.2x larger than body text.

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

Buy on MyFonts

Color Palette

12 unique colors

16.09:1 AAA Light

#ffffff

Background· 37.50000000000001%

#25201f

Secondary· 5.7%

#dfd8bf

Primary· 11.600000000000001%

#b1a092

Secondary· 8.4%

#414637

Secondary· 7.8%

#6f6451

Secondary· 6.7%

#7e7866

Secondary· 6.2%

#694945

Secondary· 4.3%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

shugakukai.co.jp(10)google-analytics.com(1)googletagmanager.com(1)code.jquery.com(1)

Website Identity

shugakukai.co.jp

Location detected: 🇯🇵 Japanvia tld

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Last analyzed: 13 May 2026 at 22:22

Historical Analysis & Change Tracking