obunsha.co.jp

https://obunsha.co.jp· First analyzed 12 May 2026· Updated 12 May 2026

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obunsha.co.jp

Mobile

Sponsored

Hosting Provider

IDCFNet

IP Address

210.129.53.85

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS4694

Organization

IDCFNet

Server

Apache

Nameservers

ns020-u46lb6ke34l619mc.u.d-53.net.ns020-u46lb6ke34l619mc.u.d-53.info.ns020-u46lb6ke34l619mc.u.d-53.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.3 s10%

Speed Index

3.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.8 MB

64 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IDCFNet

Technology Stack

8 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Segment

Libraries

UI Components

Web Servers

Languages

SEO Analysis

D52/100

Meta Tags7/15

Content8/12

Headings3/8

Technical11/21

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile1/4

Indexability3/3

obunsha.co.jpobunsha.co.jp

旺文社

教育・情報をメインとした総合出版と事業の旺文社オフィシャルサイトです。受験教材、資格検定教材を中心に発行。新刊案内、ウェブ・ベースのトレーニングの紹介。

Title Length3 chars

Recommended: 50-60 chars (~18px / 580px)

Description Length76 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

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Local SEO

Local Search Readiness

11/100

Poor

3 12 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.

6/25

Schema Data

0/25

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

def. listsnavheader/footer

Text ratio:4%

Words:185

Token eff.:Too Short

Sections/1K:21.6

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.5w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

73/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

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

4/15

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.

11/100

609 mg

CO₂e / view

4.8 MB

Page Weight

15%

Cleaner Than

New Visitor

696 mg

Returning (cached)

348 mg

Annual (10K/mo)

73.0 kg

Emission Segments

Data Center

136 mg

Network

146 mg

Device

327 mg

Resource Breakdown

JavaScript

75.1 KB

Images

4.7 MB

CSS

30.4 KB

HTML

8.1 KB

Green Hosting Not Verified

IDCFNet

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

308d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

13.02.2026

Valid Until

17.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

www.obunsha.co.jpobunsha.co.jp

SHA-256 Fingerprint

2F:EC:AD:55:E9:19:65:07:2C:FE:12:90:E8:AA:C9:D3:55:DA:B1:80...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

8033

content-type

text/html

date

Tue, 12 May 2026 05:27:26 GMT

keep-alive

timeout=1, max=100

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (7)

aspmx3.googlemail.com

aspmx4.googlemail.com

aspmx5.googlemail.com

aspmx.l.google.com

+3 more

Domain Information

obunsha.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.

44/100

Not 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...

Upgrade to view recommendations

Typography & Readability

メイリオ

WCAG Partial

61/100

Readability

/30

14/30

13px · LH 1.80

Hierarchy

/20

14/20

2x ratio

WCAG

/25

17/25

1.9:1 min contrast

Performance

/25

16/25

1 font

Heading Font

メイリオ

Sans26px

Body Font

メイリオ

Sans13px

Contrast Ratio

1.9:1

4 issues

Reading Comfort

~51 CPL

Optimal (45–75)

26px

20px

13px

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

✅ Optimal line length: ~51 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.9:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFonts

Color Palette

12 unique colors

2.43:1 Fail Light

#ffffff

Background· 23.500000000000004%

#9da9a5

Other· 8.2%

#c70b20

Primary· 10%

#d9eae5

Secondary· 6.2%

#395163

Secondary· 6%

#d1c0b5

Secondary· 5.9%

#dbdecc

Secondary· 5.4%

#34a4c6

Accent· 4.9%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)google-analytics.com(2)connect.facebook.net(2)googletagmanager.com(2)

Website Identity

obunsha.co.jp

Location detected: 🇯🇵 Japanvia tld

📧 Google Workspaceja

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Last analyzed: 12 May 2026 at 05:28

Historical Analysis & Change Tracking