otsuka-shokai.co.jp

https://otsuka-shokai.co.jp· First analyzed 02 May 2026· Updated 02 May 2026

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otsuka-shokai.co.jp

Mobile

Sponsored

Hosting Provider

JOINUS

IP Address

157.205.235.113

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS17514

Organization

JOINUS

Nameservers

ns1.otsuka-shokai.co.jp.ns3.otsuka-shokai.co.jp.ns5.otsuka-shokai.co.jp.dns102.dion.ne.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.7 s10%

Speed Index

3.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

138 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

JOINUS

Technology Stack

7 Technologies Detected

Advertising

Google Ads Microsoft Advertising Taboola

Analytics

Libraries

CSS Frameworks

SEO Analysis

C63/100

Meta Tags7/15

Content8/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile3/4

Indexability3/3

otsuka-shokai.co.jpotsuka-shokai.co.jp

ホームページ | 大塚商会

株式会社大塚商会のホームページ　情報サービス、コンピューター、コピーなどを含めたシステム機器販売と、導入支援、教育、保守までをカバーするサービス＆サポートを提供。

Title Length13 chars

Recommended: 50-60 chars (~78px / 580px)

Description Length81 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (11/16) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

19 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100

Poor

3 13 1

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

Sponsored

AI & LLM Readiness

F37/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

1/25

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

Text ratio:3%

Words:459

Token eff.:Optimal

Structured Data

Microdata

Organization×1.1(min)microdata

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph2/3

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.

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

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

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.

28/100

171 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

196 mg

Returning (cached)

98 mg

Annual (10K/mo)

20.5 kg

Emission Segments

Data Center

38 mg

Network

41 mg

Device

92 mg

Resource Breakdown

JavaScript

789.3 KB

Images

132.5 KB

CSS

427.5 KB

HTML

31.4 KB

Other

4.0 KB

Green Hosting Not Verified

JOINUS

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

137d

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

18.08.2025

Valid Until

17.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (8)

www.otsuka-shokai.co.jpsp.otsuka-shokai.co.jpoi.otsuka-shokai.co.jpsearch.otsuka-shokai.co.jprtbcn.otsuka-shokai.co.jpsync.otsuka-shokai.co.jpmypage.otsuka-shokai.co.jpcai.otsuka-shokai.co.jp

SHA-256 Fingerprint

A3:00:49:D9:B9:80:3E:E0:AE:B0:E9:B5:37:60:E4:87:3F:29:9A:47...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

connection

Keep-Alive

content-type

text/html

date

Sat, 02 May 2026 19:38:50 GMT

etag

"7648-650b7d8df1600"

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

otsukashokai-co-jp01e.mail.protection.outlook.com

Domain Information

otsuka-shokai.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.

64/100

Mobile Friendly2 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=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Meiryo

WCAG Partial

54/100

Readability

/30

10/30

13px · LH 1.40

Hierarchy

/20

15/20

0.77x ratio · ✓ H1→H6

WCAG

/25

16/25

1:1 min contrast

Performance

/25

13/25

1 font · 1 req

Heading Font

Meiryo

Sans10px

Body Font

Meiryo

Sans13px

Contrast Ratio

1:1

6 issues

Reading Comfort

~109 CPL

Too wide

10px

15px

13px

Perfect Fifth

Scale

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

❌ Very long lines: ~108 chars/line causes eye strain. Add max-width constraint.

⚠️ Hard to read: Flesch score 40/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

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

Buy on MyFontsFlesch 40

Color Palette

10 unique colors

2.36:1 Fail Light

#ffffff

Background· 43.99999999999999%

#aba99d

Secondary· 5.4%

#faf9cc

Primary· 8.8%

#f8f5a5

Accent· 8.6%

#be754c

Secondary· 6.3%

#e5ab73

Accent· 6%

#c9dad2

Secondary· 5.9%

#ac292a

Accent· 5.4%

Business & Marketing Stack

5 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

TaboolaMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)apis.usonar.jp(2)clarity.ms(2)bat.bing.com(2)cdn.cookie.sync.usonar.jp(1)

Website Identity

otsuka-shokai.co.jp

Location detected: 🇯🇵 Japanvia tld

📧 Microsoft 365ja

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Last analyzed: 02 May 2026 at 19:39

Historical Analysis & Change Tracking