ad-c.or.jp

https://ad-c.or.jp· First analyzed 27 May 2026· Updated 27 May 2026

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ad-c.or.jp

Mobile

Sponsored

Hosting Provider

JOINUS

IP Address

157.205.7.167

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS17514

Organization

JOINUS

Server

Apache

Nameservers

skydns13.otsuka-office365.jp.skydns12.otsuka-office365.jp.skydns11.otsuka-office365.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.1 s10%

Speed Index

2.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.8 MB

96 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

JOINUS

Technology Stack

5 Technologies Detected

Analytics

Libraries

CSS Frameworks

Web Servers

SEO Analysis

D40/100

Meta Tags4/15

Content10/12

Headings0/8

Technical7/25

E-E-A-T0/7

Images4/7

Links3/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ad-c.or.jpad-c.or.jp

公益社団法人ACジャパン

No description available for this page.

Title Length12 chars

Recommended: 50-60 chars (~74px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

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Crawlability

Sitemap

Type: standard

236 URLs

robots.txt

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

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

Sponsored

AI & LLM Readiness

F25/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

1/25

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

Text ratio:8%

Words:296

Token eff.:Too Short

Sections/1K:3.4

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

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.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

11/20

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

12/15

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.

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.

16/100

232 mg

CO₂e / view

1.8 MB

Page Weight

50%

Cleaner Than

New Visitor

265 mg

Returning (cached)

133 mg

Annual (10K/mo)

27.8 kg

Emission Segments

Data Center

52 mg

Network

56 mg

Device

124 mg

Resource Breakdown

JavaScript

149.0 KB

Images

1.5 MB

CSS

141.0 KB

HTML

49.2 KB

Green Hosting Not Verified

JOINUS

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Cybertrust Japan Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

09.05.2025

Valid Until

31.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.ad-c.or.jpad-c.or.jp

SHA-256 Fingerprint

88:8C:B9:39:69:A4:80:B3:06:C4:B1:06:44:78:F8:65:E8:B0:1C:42...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-length

50040

content-type

text/html

date

Wed, 27 May 2026 19:34:56 GMT

keep-alive

timeout=2, max=100

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

adc-or-jp0e.mail.protection.outlook.com

Domain Information

ad-c.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.

33/100

Not 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.

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

sans-serif

WCAG Partial

55/100

Readability

/30

7/30

13px · LH 1.90

Hierarchy

/20

19/20

2x ratio · ✓ H1→H6

WCAG

/25

16/25

4:1 min contrast

Performance

/25

13/25

0 fonts · 1 req

Heading Font

sans-serif

Sans26px

Body Font

sans-serif

Sans13px

Contrast Ratio

4:1

1 issue

Reading Comfort

~111 CPL

Too wide

26px

19px

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide line spacing (1.90). 1.4–1.6 is optimal for body text.

❌ Very long lines: ~111 chars/line causes eye strain. Add max-width constraint.

✅ Easy to read: Flesch score 82/100 — accessible to general audiences.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 4.0:1).

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

Flesch 82

Color Palette

8 unique colors

2.97:1 Fail Light

#ffffff

Background· 40.199999999999996%

#949698

Other· 5.3%

#e0e9ef

Primary· 26.5%

#96b9d1

Secondary· 6.8%

#1a3551

Accent· 6.2%

#5c90be

Secondary· 6%

#834250

Secondary· 5.1%

#c4cdd1

Secondary· 3.9%

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

common(7)google-analytics.com(1)cdnjs.cloudflare.com(1)

Website Identity

ad-c.or.jp

Location detected: 🇯🇵 Japanvia tld

📧 Microsoft 365

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Last analyzed: 27 May 2026 at 19:35

Historical Analysis & Change Tracking