kosen-k.go.jp

https://kosen-k.go.jp· First analyzed 28 May 2026· Updated 28 May 2026

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kosen-k.go.jp

Mobile

Sponsored

Hosting Provider

SAKURA

IP Address

163.43.209.71

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS9370

Organization

SAKURA

Server

Nginx

CDN

Nameservers

ns2.gslb2.sakura.ne.jp.ns1.gslb2.sakura.ne.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.6 MB

52 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv7.0

cms

kosenCustom

Technology Stack

12 Technologies Detected

Plugins

Contact Form 7

Contact Form 7 Multi Step Module

Page Links To Gtranslate

Analytics

Libraries

UI Components

CSS Frameworks

Fonts

Web Servers

Security

SEO Analysis

B72/100

Meta Tags5/15

Content9/12

Headings3/8

Technical24/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social5/5

Freshness4/4

Mobile4/4

Indexability3/3

kosen-k.go.jpkosen-k.go.jp

トップページ | 国立高等専門学校機構

独立行政法人国立高等専門学校機構は，職業に必要な実践的かつ専門的な知識及び技術を有する創造的な人材を育成しています。

Title Length19 chars

Recommended: 50-60 chars (~115px / 580px)

Description Length58 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (16/18) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

9 URLs

9 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

14/100

Poor

4 13

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

Sponsored

AI & LLM Readiness

D50/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

7/25

Citation

13/25

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. listsheader/footer

Text ratio:3%

Words:320

Token eff.:Optimal

Sections/1K:81.2

Depth:2/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.7w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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

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

4/15

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.

31/100

328 mg

CO₂e / view

2.6 MB

Page Weight

30%

Cleaner Than

New Visitor

375 mg

Returning (cached)

188 mg

Annual (10K/mo)

39.4 kg

Emission Segments

Data Center

73 mg

Network

79 mg

Device

176 mg

Resource Breakdown

JavaScript

269.5 KB

Images

2.0 MB

CSS

66.7 KB

Fonts

266.8 KB

HTML

17.1 KB

Green Hosting Not Verified

SAKURA

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

308d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

SECOM Trust Systems Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

02.03.2026

Valid Until

02.04.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.kosen-k.go.jpkosen-k.go.jp

SHA-256 Fingerprint

DF:AD:6E:C8:51:5E:57:DE:5C:D9:B1:B4:28:26:73:38:D3:B4:EE:2B...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

content-encoding

📦 Gzip(gzip)

content-length

17216

content-type

text/html; charset=UTF-8

date

Thu, 28 May 2026 06:09:24 GMT

link

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

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

kosenk-go-jp01c.mail.protection.outlook.com

Domain Information

kosen-k.go.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.

69/100

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=1.0

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

YuGothic

WCAG Partial

58/100

Readability

/30

17/30

16px · LH 2.00

Hierarchy

/20

7/20

WCAG

/25

16/25

2.74:1 min contrast

Performance

/25

18/25

2 fonts · 1 req

Heading Font

YuGothic

Sans

Body Font

YuGothic

Sans16px

Contrast Ratio

2.74:1

18 issues

Reading Comfort

~34 CPL

Narrow lines

16px

18px

16px

Minor Second

Scale

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

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 2.7:1).

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

✅ Lean font stack: 2 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle Fonts Buy on MyFonts

Color Palette

11 unique colors

2.26:1 Fail Light

#ffffff

Background· 29.900000000000002%

#abadac

Other· 7%

#e4f2f5

Primary· 14.6%

#bad1dc

Secondary· 8.1%

#5a6773

Secondary· 7.4%

#212e47

Secondary· 7%

#35acc6

Accent· 6.1%

#07162f

Accent· 6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

kosen-k.go.jp(11)gstatic.com(1)ajax.googleapis.com(1)cdn.jsdelivr.net(1)local(1)

Website Identity

国立高等専門学校機構

Organization

独立行政法人国立高等専門学校機構は，職業に必要な実践的かつ専門的な知識及び技術を有する創造的な人材を育成しています。

www.kosen-k.go.jp/

Location detected: 🇯🇵 Japanvia tld

📧 Microsoft 365ja

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Last analyzed: 28 May 2026 at 06:09

Historical Analysis & Change Tracking