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SGSiteGraph

shueisha.co.jp

集英社　―　SHUEISHA　―

Last scanned Jul 29, 2026, 9:00 PM · 8 views

87

Overall score

Great

Summary

集英社公式サイト総合トップページ。集英社の雑誌、書籍、コミックなど全ての出版物に関する情報や各サイトへアクセスできます。. This website uses WordPress behind CloudFront CDN. SEO is good (75/100) and accessibility is excellent (95/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

集英社公式サイト総合トップページ。集英社の雑誌、書籍、コミックなど全ての出版物に関する情報や各サイトへアクセスできます。

Top issues to fix

8 issues found · 3 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

75

SEO

4 issue(s) found

100

Performance

817 ms

80

Security

HTTPS & header checks

95

Accessibility

1 issue(s) found

Score history

-1 overall since Jul 22, 2026

Overall
87
SEO
75
Security
80
Performance
100
Accessibility
95

Organization

Company details published in this site's own structured data.

集英社公式サイト総合トップページ。集英社の雑誌、書籍、コミックなど全ての出版物に関する情報や各サイトへアクセスできます。

X (Twitter)

Meta tags

Title
集英社　―　SHUEISHA　―
Description
集英社公式サイト総合トップページ。集英社の雑誌、書籍、コミックなど全ての出版物に関する情報や各サイトへアクセスできます。
Canonical
https://www.shueisha.co.jp/
Language
ja
Charset
UTF-8
Viewport
Robots meta
max-image-preview:large
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
集英社　―　SHUEISHA　―
og:description
集英社公式サイト総合トップページ。集英社の雑誌、書籍、コミックなど全ての出版物に関する情報や各サイトへアクセスできます。
og:type
website
og:url
https://www.shueisha.co.jp/

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

WordPressjQuery

Hosting & CDN

Hosting provider
—
CDN provider
CloudFront
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Cybertrust Japan Co., Ltd.
Subject
www.shueisha.co.jp
Valid from
May 25, 2026
Valid to
Dec 8, 2026
Days until expiry
131
SAN domains
www.shueisha.co.jp, shueisha.co.jp

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 8 · H3 0

Links

8 internal · 61 external · 20 broken

Images

50 total · 0 missing alt

Scripts / Styles

11 scripts · 10 stylesheets

JS / CSS size

8.4 KB · 9.3 KB

Page size

78.9 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Meta description longer than 160 characters
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Missing viewport meta tag

Scan details

Requested URL
https://shueisha.co.jp
Final URL
https://www.shueisha.co.jp:443/
HTTP status
200
HTTP version
HTTP/2
Response time
816 ms
HTML size
78.9 KB
Redirect chain
https://shueisha.co.jp → https://www.shueisha.co.jp:443/

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Frequently asked questions

What technology does shueisha.co.jp use?
shueisha.co.jp is built with WordPress, jQuery.
Is shueisha.co.jp secure (HTTPS)?
Yes. shueisha.co.jp uses TLS 1.3 with a certificate issued by Cybertrust Japan Co., Ltd., valid until Dec 8, 2026.
Who hosts shueisha.co.jp?
Hosting provider information for shueisha.co.jp is not available yet.
What is shueisha.co.jp's SEO score?
shueisha.co.jp scored 75/100 for SEO in the latest analysis (fair).
What is shueisha.co.jp's overall website score?
shueisha.co.jp has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
Has shueisha.co.jp's score changed over time?
shueisha.co.jp's overall score has declined by 1 point (from 88 to 87) since Jul 22, 2026.