ea21.jp

https://ea21.jp· First analyzed 13 May 2026· Updated 13 May 2026

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ea21.jp

Mobile

Sponsored

Hosting Provider

SAKURA Internet Inc.

IP Address

160.16.117.72

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS9370

Organization

SAKURA Internet Inc.

Server

Apache

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

2.4 s10%

Speed Index

3.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

57 KB

30 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.5

cms

ea21Custom

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Plugins

All In One Event Calendar Frontend User Admin

Libraries

CSS Frameworks

Web Servers

Languages

SEO Analysis

D50/100

Meta Tags7/15

Content9/12

Headings3/8

Technical15/25

E-E-A-T0/7

Images2/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ea21.jpea21.jp

エコアクション２１中央事務局一般財団法人持続性推進機構（IPSuS）

No description available for this page.

Title Length37 chars

Recommended: 50-60 chars (~227px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

15 URLs

15 sub-sitemaps

robots.txt

17 rules

Sitemap reference found

Local SEO

Local Search Readiness

13/100

Poor

4 11 2

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

Sponsored

AI & LLM Readiness

F27/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

3/25

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

navheader/footer

Text ratio:7%

Words:277

Token eff.:Too Short

Sections/1K:104.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph0/3

Twitter Card0/3

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.

73/100

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

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.

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.

54/100

A+

7 mg

CO₂e / view

57.3 KB

Page Weight

95%

Cleaner Than

New Visitor

8 mg

Returning (cached)

4 mg

Annual (10K/mo)

852 g

Emission Segments

Data Center

2 mg

Network

2 mg

Device

4 mg

Resource Breakdown

HTML

57.3 KB

Green Hosting Not Verified

SAKURA Internet Inc.

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

109d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Japan Registry Services Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

20.08.2025

Valid Until

31.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.ea21.jpea21.jp

SHA-256 Fingerprint

9B:60:5F:0D:CA:8E:0B:F9:5E:EB:6A:DE:A0:56:B3:4F:88:25:AE:EA...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Wed, 13 May 2026 19:26:50 GMT

keep-alive

timeout=5, max=100

link

<https://www.ea21.jp/wp-json/>; rel="https://api.w.org/"

server

Apache/2.4.57 (CentOS Stream) OpenSSL/3.2.2

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

orangebison1.sakura.ne.jp

Domain Information

ea21.jp

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.

56/100

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=1240px

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

YuGothic

WCAG Partial

49/100

Readability

/30

14/30

14px · LH 1.75

Hierarchy

/20

7/20

WCAG

/25

14/25

2.86:1 min contrast

Performance

/25

14/25

1 font

Heading Font

YuGothic

Sans

Body Font

YuGothic

Sans14px

Contrast Ratio

2.86:1

20 issues

Reading Comfort

~81 CPL

Wide lines

20px

16px

14px

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

⚠️ Wide lines: ~81 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 2.9:1).

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

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

12 unique colors

Light

#ffffff

Background· 26.1%

#114443

Primary· 9.7%

#032631

Accent· 8.2%

#145852

Accent· 7.2%

#b0d9c9

Secondary· 6.8%

#427c70

Secondary· 6.8%

#1d725e

Accent· 6.3%

#cde0dd

Secondary· 6.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ea21.jp(5)googletagmanager.com(1)

Website Identity

ea21.jp

info@ea21.jp

Location detected: 🇯🇵 Japanvia tld

Sponsored

Last analyzed: 13 May 2026 at 19:27

Historical Analysis & Change Tracking

ea21.jp

エコアクション２１ 中央事務局 一般財団法人 持続性推進機構（IPSuS）

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

ea21.jp

エコアクション２１中央事務局一般財団法人持続性推進機構（IPSuS）