sikaku.gr.jp

https://sikaku.gr.jp· First analyzed 17 May 2026· Updated 17 May 2026

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sikaku.gr.jp

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

52.196.183.200

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Apache

Nameservers

ns-637.awsdns-15.net.ns-1320.awsdns-37.org.ns-1974.awsdns-54.co.uk.ns-62.awsdns-07.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.5 MB

128 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

10 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Libraries

CSS Frameworks

Tag Managers

Advertising

Microsoft Advertising

Web Servers

Apache

SEO Analysis

D53/100

Meta Tags9/15

Content9/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

sikaku.gr.jpsikaku.gr.jp

資格検定のサーティファイ｜あなたのスキルアップを応援します

サーティファイでは、ICT基礎能力やコミュニケーション能力などエンプロイアビリティを高め自信へつなげていくことができる様々な資格検定試験を主催しています。検定開発などの協業をご希望の企業様や、コンテンツをお探しの教育系スタートアップの方は是非お気軽にお問い合わせください。

Title Length29 chars

Recommended: 50-60 chars (~179px / 580px)

Description Length136 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

Upgrade to view details

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

F35/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

5/25

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:317

Token eff.:Optimal

Sections/1K:25.2

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 (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.

62/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

12/20

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

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 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.

17/100

365 mg

CO₂e / view

3.5 MB

Page Weight

15%

Cleaner Than

New Visitor

417 mg

Returning (cached)

208 mg

Annual (10K/mo)

43.7 kg

Emission Segments

Data Center

18 mg

Network

107 mg

Device

240 mg

Resource Breakdown

JavaScript

329.5 KB

Images

2.9 MB

CSS

254.0 KB

HTML

40.5 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

85d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.07.2025

Valid Until

11.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.sikaku.gr.jpsikaku.gr.jp

SHA-256 Fingerprint

AE:E8:75:C2:3F:E0:38:3E:EE:9E:3D:0B:A8:C6:44:7B:A4:60:2B:49...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-type

text/html; charset=UTF-8

date

Sun, 17 May 2026 05:34:51 GMT

server

Apache

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (5)

aspmx3.googlemail.com

aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx2.googlemail.com

+1 more

Domain Information

sikaku.gr.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.

51/100

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

sans-serif

WCAG Partial

65/100

Readability

/30

21/30

14px · LH 1.60

Hierarchy

/20

14/20

0.93x ratio · ✓ H1→H6

WCAG

/25

14/25

1:1 min contrast

Performance

/25

16/25

0 fonts

Heading Font

sans-serif

Sans13px

Body Font

sans-serif

Sans14px

Contrast Ratio

1:1

35 issues

Reading Comfort

~48 CPL

Optimal (45–75)

13px

29px

24px

14px

Perfect Fifth

Scale

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

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 46/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 35 elements below WCAG AA threshold (min 1.0:1).

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

Flesch 47

Color Palette

7 unique colors

Dark

#6f7067

Other· 5.4%

#eefcff

Background· 63.599999999999994%

#439ac7

Primary· 11.6%

#bcad89

Secondary· 7.7%

#e2eeef

Secondary· 5.7%

#bed6db

Primary· 5.1%

#f2e9d6

Accent· 0.8%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(6)googletagmanager.com(3)cdn.activity.smart-bdash.com(2)clarity.ms(2)connect.facebook.net(2)

Website Identity

sikaku.gr.jp

Location detected: 🇯🇵 Japanvia tld

📧 Google Workspaceja

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Last analyzed: 17 May 2026 at 05:35

Historical Analysis & Change Tracking