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SGSiteGraph

sega.co.jp

株式会社セガ

Last scanned Aug 24, 2026, 1:22 PM · 2 views

85

Overall score

Great

Summary

株式会社セガのコーポレートサイトです。セガの会社情報、採用情報、グループ企業の情報などをご紹介します。. This website uses Apache. SEO is good (80/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

株式会社セガのコーポレートサイトです。セガの会社情報、採用情報、グループ企業の情報などをご紹介します。

Top issues to fix

9 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.

  • 2 cookies without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • No structured data (JSON-LD) found

    SEO

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

+3 more issues — details in the sections below.

80

SEO

3 issue(s) found

100

Performance

128 ms

65

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

株式会社セガのコーポレートサイトです。セガの会社情報、採用情報、グループ企業の情報などをご紹介します。

YouTubeX (Twitter)FacebookInstagramLinkedIn

Meta tags

Title
株式会社セガ
Description
株式会社セガのコーポレートサイトです。セガの会社情報、採用情報、グループ企業の情報などをご紹介します。
Canonical
https://www.sega.co.jp/
Language
ja
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
株式会社セガ
og:description
株式会社セガのコーポレートサイトです。セガの会社情報、採用情報、グループ企業の情報などをご紹介します。
og:type
website
og:url
https://www.sega.co.jp/

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle AdsApache

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

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

TLS / SSL certificate

Version
TLS 1.2
Issuer
Amazon
Subject
*.sega.co.jp
Valid from
Apr 11, 2026
Valid to
Oct 25, 2026
Days until expiry
61
SAN domains
*.sega.co.jp, sega.co.jp

Security headers

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

Compression: none · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 10

Links

45 internal · 20 external · 20 broken

Images

43 total · 0 missing alt

Scripts / Styles

9 scripts · 11 stylesheets

JS / CSS size

1.2 KB · 0 B

Page size

71.0 KB

Robots.txt & Sitemap

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

SEO issues

  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://sega.co.jp
Final URL
https://sega.co.jp
HTTP status
200
HTTP version
HTTP/2
Response time
127 ms
HTML size
71.0 KB
Redirect chain
https://sega.co.jp

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sega.co.jp use?
sega.co.jp is built with jQuery, Google Ads, Apache.
Is sega.co.jp secure (HTTPS)?
Yes. sega.co.jp uses TLS 1.2 with a certificate issued by Amazon, valid until Oct 25, 2026.
Who hosts sega.co.jp?
Hosting provider information for sega.co.jp is not available yet.
What is sega.co.jp's SEO score?
sega.co.jp scored 80/100 for SEO in the latest analysis (great).
What is sega.co.jp's overall website score?
sega.co.jp has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.