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cesa.or.jp

CESA：一般社団法人コンピュータエンターテインメント協会

Last scanned Aug 5, 2026, 2:00 AM · 12 views

81

Overall score

Great

Summary

健全にゲームを遊ぶための研究・啓発活動、各種ガイドラインの策定、ゲーム白書の発刊などを行い、東京ゲームショウや開発者会議などを開催し、業界全体で様�… This website uses Nginx hosted on SAKURA-A - SAKURA Internet Inc., JP. SEO is good (75/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

健全にゲームを遊ぶための研究・啓発活動、各種ガイドラインの策定、ゲーム白書の発刊などを行い、東京ゲームショウや開発者会議などを開催し、業界全体で様々な活動に取り組んでいます。

Japan
Hosted on SAKURA-A - SAKURA Internet Inc., JP

Top issues to fix

10 issues found · 2 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 X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

  • Meta description longer than 160 characters

    SEO

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

+4 more issues — details in the sections below.

75

SEO

4 issue(s) found

100

Performance

987 ms

65

Security

HTTPS & header checks

85

Accessibility

1 issue(s) found

Score history

0 overall since Jul 27, 2026

Overall
81
SEO
75
Security
65
Performance
100
Accessibility
85

Organization

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

健全にゲームを遊ぶための研究・啓発活動、各種ガイドラインの策定、ゲーム白書の発刊などを行い、東京ゲームショウや開発者会議などを開催し、業界全体で様々な活動に取り組んでいます。

Contact

Email, phone, and address published on this site's own pages.

Source: https://www.cesa.or.jp/contact

Meta tags

Title
CESA：一般社団法人コンピュータエンターテインメント協会
Description
健全にゲームを遊ぶための研究・啓発活動、各種ガイドラインの策定、ゲーム白書の発刊などを行い、東京ゲームショウや開発者会議などを開催し、業界全体で様々な活動に取り組んでいます。
Canonical
Language
ja
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0, minimum-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
CESA：一般社団法人コンピュータエンターテインメント協会
og:description
健全にゲームを遊ぶための研究・啓発活動、各種ガイドラインの策定、ゲーム白書の発刊などを行い、東京ゲームショウや開発者会議などを開催し、業界全体で様々な活動に取り組んでいます。
og:type
website
og:url
https://www.cesa.or.jp/

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle AnalyticsNginx

Hosting & CDN

CDN provider
—
IP address
133.125.30.136
ASN
AS7684 (SAKURA-A - SAKURA Internet Inc., JP)

DNS records

TypeValue
A
  • 133.125.30.136
AAAA—
MX
  • cesa-or-jp.mail.protection.outlook.com
TXT
  • v=spf1 include:spf.protection.outlook.com include:spf.bmv.jp include:spf.haihaimail.jp include:mdyasaka.maildealer.jp ip4:13.114.174.107 ip4:52.197.121.135 ip4:133.125.30.136 ip4:99.83.128.244 -all
  • _globalsign-domain-verification=WoTiq1Wx_4PxFwTgv6sq2n0U8KlAo6Sd4JPo2QkJeP
  • google-site-verification=qHva27L29OJLfrRikVySNMjI9kV9zxNRZy3xO5d0zT4
NS
  • skydns11.otsuka-office365.jp
  • skydns13.otsuka-office365.jp
  • skydns12.otsuka-office365.jp
CAA—
CNAME
  • cesa.or.jp
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
cesa.or.jp
Valid from
Jun 25, 2026
Valid to
Sep 23, 2026
Days until expiry
49
SAN domains
cesa.or.jp, www.cesa.or.jp

Security headers

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

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 2 · H3 0

Links

63 internal · 6 external · 1 broken

Images

41 total · 17 missing alt

Scripts / Styles

17 scripts · 9 stylesheets

JS / CSS size

544 KB · 243 KB

Page size

54.9 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
1
sitemap.xml
Found
URLs in sitemap
559

SEO issues

  • Title longer than 60 characters
  • Meta description longer than 160 characters
  • Missing canonical link
  • No structured data (JSON-LD) found

Accessibility issues

  • More than 20% of images are missing alt text

Scan details

Requested URL
https://cesa.or.jp
Final URL
https://www.cesa.or.jp/
HTTP status
200
HTTP version
HTTP/2
Response time
986 ms
HTML size
54.9 KB
Redirect chain
https://cesa.or.jp → https://www.cesa.or.jp/

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Frequently asked questions

What technology does cesa.or.jp use?
cesa.or.jp is built with jQuery, Google Analytics, Nginx.
Is cesa.or.jp secure (HTTPS)?
Yes. cesa.or.jp uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 23, 2026.
Who hosts cesa.or.jp?
cesa.or.jp is hosted on SAKURA-A - SAKURA Internet Inc., JP.
What is cesa.or.jp's SEO score?
cesa.or.jp scored 75/100 for SEO in the latest analysis (fair).
What is cesa.or.jp's overall website score?
cesa.or.jp has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
Has cesa.or.jp's score changed over time?
cesa.or.jp's overall score has stayed steady at 81/100 since Jul 27, 2026.