u-can.co.jp

https://u-can.co.jp· First analyzed 11 May 2026· Updated 11 May 2026

Export

u-can.co.jp

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.148.149

Site Location

🇯🇵 Japanvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

everton.ns.cloudflare.com.kallie.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.8 s10%

Speed Index

3.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 MB

250 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

15 Technologies Detected

Advertising

Google Ads Twitter Ads TikTok Pixel Microsoft Advertising Criteo Taboola

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Libraries

CSS Frameworks

Tag Managers

CDN

SEO Analysis

C63/100

Meta Tags5/15

Content9/12

Headings3/8

Technical18/25

E-E-A-T0/7

Images5/7

Links5/5

URL5/5

Social4/5

Freshness2/4

Mobile4/4

Indexability3/3

u-can.co.jpu-can.co.jp

通信教育講座なら生涯学習のユーキャン

生涯学習のユーキャンは、「学ぶよろこびをあなたに」をモットーに、役立つ資格から、趣味、実用講座などさまざまな通信教育をご紹介しています。

Title Length18 chars

Recommended: 50-60 chars (~111px / 580px)

Description Length68 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,584 URLs

robots.txt

21 rules

Sitemap reference found

Local SEO

Local Search Readiness

4/100

Poor

1 15 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.

7/25

Schema Data

0/25

Citation

15/25

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

nav

Text ratio:2%

Words:287

Token eff.:Too Short

Sections/1K:101

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary39w

Descriptive Headingsavg 1.1w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

Upgrade to view recommendations

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.

74/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

20/20

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

5/15

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.

50/100

311 mg

CO₂e / view

3.0 MB

Page Weight

30%

Cleaner Than

New Visitor

355 mg

Returning (cached)

178 mg

Annual (10K/mo)

37.3 kg

Emission Segments

Data Center

15 mg

Network

91 mg

Device

204 mg

Resource Breakdown

JavaScript

380.9 KB

Images

1.6 MB

CSS

73.8 KB

Fonts

960.0 KB

HTML

15.3 KB

Other

20.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

81%Very Good

Interactive

HTTPS

WAF

49d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Cybertrust Japan Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

09.06.2025

Valid Until

30.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.u-can.co.jp

SHA-256 Fingerprint

FF:F5:69:F7:73:8A:BF:B0:24:F8:E2:BA:6C:C9:90:BF:01:E4:EF:D5...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 4 Hours(max-age=14400)

cf-cache-status

EXPIRED

cf-ray🇫🇷 Paris

9fa25c41fbbfd598-CDG

content-encoding

⚡ Brotli(br)

content-security-policy

upgrade-insecure-requests; report-uri /csp/report;

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mx.securemx.jp

Domain Information

u-can.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.

55/100

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

メイリオ + Noto Sans CJK JP

WCAG Partial

57/100

Readability

/30

16/30

15px · LH 1.80

Hierarchy

/20

11/20

1.23x ratio · ✓ H1→H6

WCAG

/25

12/25

1.32:1 min contrast

Performance

/25

18/25

2 fonts · 4 req

Heading Font

メイリオ

Sans18px

Body Font

Noto Sans CJK JP

Sans15px

Contrast Ratio

1.32:1

3 issues

Reading Comfort

~34 CPL

Narrow lines

18px

32px

16px

15px

Minor Second

Scale

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 1.3:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

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

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

Buy on MyFonts

Color Palette

10 unique colors

Light

#ffffff

Background· 44.1%

#e65047

Primary· 17.400000000000002%

#d80001

Accent· 10.7%

#e8c2c3

Secondary· 7%

#3aaac3

Accent· 6.8%

#e7eeeb

Secondary· 6%

#2c3746

Secondary· 4.3%

#667c98

Secondary· 2.4%

Business & Marketing Stack

8 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Microsoft AdsEnterprise

TaboolaMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)connect.facebook.net(3)dmp.im-apps.net(2)img.ak.impact-ad.jp(2)scripts.clarity.ms(1)

Website Identity

u-can.co.jp

Location detected: 🇯🇵 Japanvia tld

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 11 May 2026 at 15:54

Historical Analysis & Change Tracking