gentosha-go.com

https://gentosha-go.com· First analyzed 05 May 2026· Updated 05 May 2026

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gentosha-go.com

Mobile

Sponsored

Hosting Provider

Japan Business Press Co., Ltd.

IP Address

202.238.151.111

Site Location

🇯🇵 渋谷区, Japanvia schema_nap

Server Location

🇯🇵 Tsuzuki Ku, Japan

ASN

AS2497

Organization

Japan Business Press Co., Ltd.

CDN

Nameservers

02.dnsv.jp.03.dnsv.jp.04.dnsv.jp.01.dnsv.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.5 s10%

Speed Index

3.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

949 KB

191 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Japan Business Press Co., Ltd.

CDN

Technology Stack

20 Technologies Detected

Advertising

Google Ads Google AdSense Twitter Ads Microsoft Advertising Criteo Outbrain

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

UI Components

Slick Carousel Fancybox

CSS Frameworks

Tailwind CSS

Bootstrap

Icon Libraries

Font Awesome Material Icons

Libraries

Fonts

Tag Managers

Payments

SEO Analysis

C69/100

Meta Tags5/15

Content10/12

Headings6/8

Technical22/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social5/5

Freshness2/4

Mobile3/4

Indexability3/3

gentosha-go.comgentosha-go.com

富裕層向け資産防衛メディア | ゴールドオンライン

幻冬舎グループによる企業オーナー・富裕層向けメディアサイト。あなたの財産を「守る」「増やす」「残す」ための情報が満載です。

Title Length25 chars

Recommended: 50-60 chars (~152px / 580px)

Description Length61 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (53/79) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

12 URLs

12 sub-sitemaps

robots.txt

15 rules

Sitemap reference found

Local SEO

Local Search Readiness

18/100

Poor

5 14 1

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

Sponsored

AI & LLM Readiness

D40/100

Bot Access

20/25

Machine Read.

0/25

Schema Data

5/25

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

Text ratio:10%

Words:8,325

Token eff.:Excessive

Structured Data

3 JSON-LD

WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary97w

Descriptive Headingsavg 1.9w

Canonical URL

Open Graph3/3

Twitter Card2/3

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.

70/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

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

6/15

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.

48/100

117 mg

CO₂e / view

949.5 KB

Page Weight

80%

Cleaner Than

New Visitor

134 mg

Returning (cached)

67 mg

Annual (10K/mo)

14.1 kg

Emission Segments

Data Center

26 mg

Network

28 mg

Device

63 mg

Resource Breakdown

JavaScript

875.4 KB

Images

18.4 KB

CSS

6.2 KB

Fonts

6.2 KB

HTML

19.8 KB

Other

23.5 KB

Green Hosting Not Verified

Japan Business Press Co., Ltd.

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

15%Critical

Critical / Transactional

HTTPS

No WAF

114d

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/1.1

Valid From

08.08.2025

Valid Until

27.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

gentosha-go.com

SHA-256 Fingerprint

71:0C:30:96:76:E9:03:C6:12:86:A0:49:F6:4B:FD:89:F8:5F:09:83...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 0s(max-age=0, private, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Tue, 05 May 2026 11:13:57 GMT

strict-transport-security

max-age=31536000

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

gentosha-go.com

Domain Age

10y 10m

Created

09.07.2015

Expires

09.07.2026

Last Updated

23.06.2025

Registrar

GMO Internet Group, Inc. d/b/a Onamae.com

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Data Protection Officer mentioned

Legitimate interest basis mentioned

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.

78/100

Mobile Friendly11 breakpoints

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans

WCAG Partial

58/100

Readability

/30

14/30

12px · LH 1.33

Hierarchy

/20

12/20

1.46x ratio

WCAG

/25

14/25

1.29:1 min contrast

Performance

/25

18/25

2 fonts · 2 req

Heading Font

Open Sans

Sans18px

Body Font

Open Sans

Sans12px

Contrast Ratio

1.29:1

6 issues

Reading Comfort

~38 CPL

Narrow lines

18px

22px

12px

Major Second

Scale

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.3:1).

⚠️ 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.

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

GGoogle Fonts

Color Palette

8 unique colors

5.74:1 AA Dark

#666666

Other· 36.900000000000006%

#ffffff

Background· 24.1%

#60583f

Primary· 12.9%

#0f0b0d

Secondary· 10.3%

#42372e

Secondary· 5.8%

#cfd3d8

Border· 3.8%

#40679c

Secondary· 1.4%

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Twitter/X AdsMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)tracker.shanon-services.com(3)api.popin.cc(2)jp.popin.cc(1)cdn.id5-sync.com(1)

Website Identity

ゴールドオンライン

NewsMediaOrganization

幻冬舎グループによる企業オーナー・富裕層向けメディアサイト。あなたの財産を「守る」「増やす」「残す」ための情報が満載です。

10 years old

千駄ヶ谷2-30-1, 渋谷区

151-0051, 渋谷区, 東京都

Location detected: 🇯🇵 Japan, 渋谷区via schema_nap

GMO Internet Group, Inc. d/b/a Onamae.comja

Social Profiles

Facebook X (Twitter)Instagram

Sponsored

Last analyzed: 05 May 2026 at 11:14

Historical Analysis & Change Tracking