edogawa-u.ac.jp

https://edogawa-u.ac.jp· First analyzed 01 Jun 2026· Updated 01 Jun 2026

Export

edogawa-u.ac.jp

Mobile

Sponsored

Hosting Provider

Directorz Co., Ltd.

IP Address

27.133.241.8

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Shibuya City, Japan

ASN

AS4713

Organization

Directorz Co., Ltd.

Server

Apache

Nameservers

ns02.pwd.ne.jp.ns2.edogawa-u.ac.jp.ns.edogawa-u.ac.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

3.1 s10%

Speed Index

4.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.3 MB

136 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Directorz Co., Ltd.

Technology Stack

9 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Libraries

UI Components

Fonts

Tag Managers

Web Servers

SEO Analysis

D53/100

Meta Tags7/15

Content9/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

edogawa-u.ac.jpedogawa-u.ac.jp

学校法人江戸川学園江戸川大学

江戸川大学公式サイト。TXで秋葉原より約30分。実習とゼミを必修とし、少人数教育で情報化・国際化社会に対応する人材を育成。1990年の開学から全学生にノートPCを無償貸与しています。

Title Length15 chars

Recommended: 50-60 chars (~93px / 580px)

Description Length91 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (61/104) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

10 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

1 rules

Allows all crawlers

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

D42/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

0/25

Citation

11/25

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:6%

Words:327

Token eff.:Optimal

Sections/1K:9.2

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.

63/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

13/20

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

Forms & Inputs

7/15

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

9/15

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.

6/100

415 mg

CO₂e / view

3.3 MB

Page Weight

30%

Cleaner Than

New Visitor

475 mg

Returning (cached)

237 mg

Annual (10K/mo)

49.8 kg

Emission Segments

Data Center

93 mg

Network

100 mg

Device

223 mg

Resource Breakdown

JavaScript

308.7 KB

Images

2.1 MB

CSS

833.7 KB

Fonts

59.6 KB

HTML

42.3 KB

Other

3.5 KB

Green Hosting Not Verified

Directorz Co., Ltd.

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

209d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

17.12.2025

Valid Until

27.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

edogawa-u.ac.jpwww.edogawa-u.ac.jp

SHA-256 Fingerprint

DA:71:D5:D5:03:F4:96:12:C6:78:37:AC:5A:68:A5:C6:37:3F:BD:18...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-type

text/html; charset=utf-8

date

Mon, 01 Jun 2026 19:48:35 GMT

keep-alive

timeout=5, max=100

server

Apache

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

ALT1.ASPMX.L.GOOGLE.COM

ASPMX.L.GOOGLE.COM

ASPMX2.GOOGLEMAIL.COM

ASPMX3.GOOGLEMAIL.COM

+1 more

Domain Information

edogawa-u.ac.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.

42/100

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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Noto Sans JP

WCAG Partial

53/100

Readability

/30

15/30

16px · LH 1.88

Hierarchy

/20

8/20

WCAG

/25

12/25

1.13:1 min contrast

Performance

/25

18/25

2 fonts · 1 req

Heading Font

Noto Sans JP

Sans

Body Font

Noto Sans JP

Sans16px

Contrast Ratio

1.13:1

1 issue

Reading Comfort

~127 CPL

Too wide

13px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Wide line spacing (1.88). 1.4–1.6 is optimal for body text.

❌ Very long lines: ~127 chars/line causes eye strain. Add max-width constraint.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.1:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

GGoogle Fonts

Color Palette

7 unique colors

21:1 AAA Dark

#000000

Text· 73.6%

#ffffff

Text· 13.1%

#003a79

Primary· 8.4%

#e1d9b6

Secondary· 1.9%

#26496e

Secondary· 1.3%

#0b315f

Accent· 0.2%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(7)connect.facebook.net(3)s.yjtag.jp(1)cs.nakanohito.jp(1)scripts.clarity.ms(1)

Website Identity

edogawa-u.ac.jp

〒270-0198 千葉県流山市駒木474

Location detected: 🇯🇵 Japanvia tld

📧 Google Workspaceja

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 01 Jun 2026 at 19:49

Historical Analysis & Change Tracking

edogawa-u.ac.jp

学校法人江戸川学園 江戸川大学

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

edogawa-u.ac.jp

学校法人江戸川学園江戸川大学