kusuguru.co.jp

https://kusuguru.co.jp· First analyzed 08 May 2026· Updated 08 May 2026

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kusuguru.co.jp

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.2.244

Site Location

🇯🇵 Japanvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

damon.ns.cloudflare.com.candy.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

666 ms10%

Speed Index

866 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

18.5 MB

100 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.6.5

cms

kusuguruv1.0Custom

by Version: 1.0

View Theme

Technology Stack

8 Technologies Detected

Analytics

Libraries

Other

UI Components

CSS Frameworks

CDN

Plugins

SEO Analysis

C63/100

Meta Tags8/15

Content7/12

Headings3/8

Technical21/25

E-E-A-T2/7

Images1/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

kusuguru.co.jpkusuguru.co.jp

kusuguru inc. (クスグル株式会社) - 世界をワクワクさせる

世界をワクワクさせる

Title Length37 chars

Recommended: 50-60 chars (~225px / 580px)

Description Length10 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (23/28) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

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

D43/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

7/25

Citation

9/25

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

navheader/footer

Text ratio:6%

Words:139

Token eff.:Too Short

Sections/1K:86.3

Depth:2/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card1/3

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.

83/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

15/20

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

Forms & Inputs

15/15

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.

2 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.

36/100

1.92 g

CO₂e / view

18.5 MB

Page Weight

Cleaner Than

New Visitor

2.19 g

Returning (cached)

1.09 g

Annual (10K/mo)

229.9 kg

Emission Segments

Data Center

94 mg

Network

563 mg

Device

1.26 g

Resource Breakdown

JavaScript

65.3 KB

Images

1.9 MB

CSS

2.2 MB

HTML

9.9 KB

Other

14.3 MB

Green Hosting Verified

Cloudflare

GWF Verified

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

86%Very Good

Static / Informational

HTTPS

WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

02.05.2026

Valid Until

31.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

kusuguru.co.jp*.kusuguru.co.jp

SHA-256 Fingerprint

ED:88:3E:FD:03:0D:E5:2A:D8:2B:E7:9A:17:A7:84:61:A0:4F:46:57...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇫🇷 Paris

9f89dc8b6b926fac-CDG

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Fri, 08 May 2026 16:32:38 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx.l.google.com

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

kusuguru.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.

56/100

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, user-scalable=yes, maximum-scale=1.0, minimum-scale=1.0

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

YakuHanJP

WCAG Partial

52/100

Readability

/30

17/30

16px · LH 2.77

Hierarchy

/20

9/20

1x ratio

WCAG

/25

15/25

1:1 min contrast

Performance

/25

11/25

1 font · 8 req

Heading Font

YakuHanJP

Sans16px

Body Font

YakuHanJP

Sans16px

Contrast Ratio

1:1

22 issues

Reading Comfort

~46 CPL

Optimal (45–75)

16px

24px

48px

16px

Major Sixth

Scale

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

⚠️ Wide line spacing (2.77). 1.4–1.6 is optimal for body text.

✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

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

Buy on MyFontsFluid Type (rem)

Color Palette

6 unique colors

15.27:1 AAA Dark

#09090a

Background· 30.8%

#e3e1e0

Other· 5.6%

#21191f

Primary· 24.799999999999997%

#3f2929

Secondary· 19.3%

#5f3e37

Secondary· 12.7%

#655751

Secondary· 6.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

kusuguru.co.jp(3)googletagmanager.com(2)cdnjs.cloudflare.com(2)google-analytics.com(1)unpkg.com(1)

Website Identity

kusuguru inc.

Organization

世界をワクワクさせる

kusuguru.co.jp/

Location detected: 🇯🇵 Japanvia tld

📧 Google Workspace

Sponsored

Last analyzed: 08 May 2026 at 16:32

Historical Analysis & Change Tracking