nihon-ma.co.jp

https://nihon-ma.co.jp· First analyzed 19 May 2026· Updated 19 May 2026

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nihon-ma.co.jp

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.206.93

Site Location

🇯🇵 千代田区, Japanvia schema_nap

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Apache

CDN

CloudFront

Nameservers

ns-194.awsdns-24.com.ns-723.awsdns-26.net.ns-1480.awsdns-57.org.ns-1844.awsdns-38.co.uk.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

647 ms10%

Speed Index

841 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.3 MB

137 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

AWS CloudFront

CDN

CloudFront

Technology Stack

15 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Twitter Ads LinkedIn Ads Microsoft Advertising Criteo

UI Components

Swiper

Other

AOS (Animate On Scroll)

Other

CSS Frameworks

Tag Managers

Other

Web Servers

SEO Analysis

B71/100

Meta Tags7/15

Content11/12

Headings3/8

Technical21/25

E-E-A-T2/7

Images7/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile3/4

Indexability3/3

nihon-ma.co.jpnihon-ma.co.jp

M&A･事業承継の成約実績No.1【日本M&Aセンター】

日本M&Aセンターは、M&A仲介で実績No.1のリーディングカンパニー。国内最多の圧倒的な譲渡案件・譲受案件が導くベストマッチングで支援。事業承継・買収・上場支援など、ご相談は無料！

Title Length28 chars

Recommended: 50-60 chars (~174px / 580px)

Description Length91 chars

Recommended: 120-160 chars

Issues (1)

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

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

18 URLs

18 sub-sitemaps

robots.txt

77 rules

Sitemap reference found

Local SEO

Local Search Readiness

43/100

Fair

12 10

Sponsored

AI & LLM Readiness

D43/100

Bot Access

20/25

Machine Read.

11/25

Schema Data

3/25

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

nav

Text ratio:5%

Words:651

Token eff.:Optimal

Sections/1K:3.1

Depth:1/5

Structured Data

1 JSON-LD

Organization×1.1

sameAs entity links

Citation Readiness

Opening Summary10w

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.

59/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

15/20

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

Forms & Inputs

5/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

12/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

7/15

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.

68/100

135 mg

CO₂e / view

1.3 MB

Page Weight

70%

Cleaner Than

New Visitor

154 mg

Returning (cached)

77 mg

Annual (10K/mo)

16.2 kg

Emission Segments

Data Center

7 mg

Network

40 mg

Device

89 mg

Resource Breakdown

JavaScript

348.1 KB

Images

275.5 KB

CSS

674.1 KB

HTML

35.8 KB

Other

921 B

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

66%Fair

Interactive

HTTPS

No WAF

187d

Certificate Details

Type

Organization Validated (OV)

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

21.10.2025

Valid Until

22.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.nihon-ma.co.jpnihon-ma.co.jp

SHA-256 Fingerprint

21:2D:C9:32:1D:CF:AC:AC:84:62:DA:27:BC:C5:0D:72:9A:C6:31:DC...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🔵 1 Week(max-age=604800)

content-encoding

📦 Gzip(gzip)

content-length

36310

content-security-policy

frame-ancestors 'self' https://kronos-ma.com https://*.nihon...

content-type

text/html

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

nihonma-co-jp01c.mail.protection.outlook.com

Domain Information

nihon-ma.co.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer 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.

77/100

Mobile Friendly17 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

Helvetica Neue

WCAG Partial

60/100

Readability

/30

18/30

17px · LH 2.00

Hierarchy

/20

11/20

1.41x ratio · ✓ H1→H6

WCAG

/25

15/25

1:1 min contrast

Performance

/25

16/25

System fonts

Heading Font

Helvetica Neue

Sans24px

Body Font

Helvetica Neue

Sans17px

Contrast Ratio

1:1

14 issues

Reading Comfort

~42 CPL

Narrow lines

24px

66px

30px

16px

17px

Major Third

Scale

✅ Excellent readability: 17px body text is ideal for all devices.

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

✅ Easy to read: Flesch score 83/100 — accessible to general audiences.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 1.0:1).

✅ 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.

Flesch 83

Color Palette

6 unique colors

21:1 AAA Light

#ffffff

Background· 62.5%

#000000

Background· 17.1%

#5eaca6

Primary· 6.3%

#cfdde0

Secondary· 4.8%

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google AnalyticsFree

Microsoft ClarityFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)connect.facebook.net(3)cd.ladsp.com(2)bat.bing.com(2)s.yimg.jp(2)

Website Identity

日本M&Aセンター

Organization

0120034150

www.nihon-ma.co.jp/

丸の内一丁目8番2号鉃鋼ビルディング 24階, 千代田区

100-0005, 千代田区, 東京都

Location detected: 🇯🇵 Japan, 千代田区via schema_nap

📧 Microsoft 365jaEst. 1991

Social Profiles

Facebook X (Twitter)

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Last analyzed: 19 May 2026 at 03:34

Historical Analysis & Change Tracking