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g123.jp

無料ゲームがダウンロードなしで今すぐできる - G123

Last scanned Jul 25, 2026, 6:25 AM · 2 views

86

Overall score

Great

Summary

G123は無料ゲームが会員登録不要・ダウンロードなしで気軽に今すぐできるゲームサービスです。有名アニメ原作の本格ブラウザゲームを多数配信中！. This website uses Next.js hosted on AWS behind CloudFront CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance good (75/100). Top issue: Title longer than 60 characters.

G123は無料ゲームが会員登録不要・ダウンロードなしで気軽に今すぐできるゲームサービスです。有名アニメ原作の本格ブラウザゲームを多数配信中！

United States
Hosted on AWS

Top issues to fix

5 issues found

  • 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.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

85

SEO

3 issue(s) found

75

Performance

684 ms

85

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.

G123は無料ゲームが会員登録不要・ダウンロードなしで気軽に今すぐできるゲームサービスです。有名アニメ原作の本格ブラウザゲームを多数配信中！

Contact

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

Meta tags

Title
無料ゲームがダウンロードなしで今すぐできる - G123
Description
G123は無料ゲームが会員登録不要・ダウンロードなしで気軽に今すぐできるゲームサービスです。有名アニメ原作の本格ブラウザゲームを多数配信中！
Canonical
https://g123.jp/?lang=ja
Language
ja
Charset
utf-8
Viewport
width=device-width, initial-scale=1, viewport-fit=cover
Robots meta
max-image-preview:large
Manifest
https://g123.jp/next-api/app.webmanifest?lang=ja

OpenGraph & Twitter Card

OpenGraph

og:title
無料ゲームがダウンロードなしで今すぐできる - G123
og:description
G123は無料ゲームが会員登録不要・ダウンロードなしで気軽に今すぐできるゲームサービスです。有名アニメ原作の本格ブラウザゲームを多数配信中！
og:type
website
og:url
https://g123.jp

Twitter Card

twitter:card
summary_large_image
twitter:title
無料ゲームがダウンロードなしで今すぐできる - G123
twitter:description
G123は無料ゲームが会員登録不要・ダウンロードなしで気軽に今すぐできるゲームサービスです。有名アニメ原作の本格ブラウザゲームを多数配信中！

Technologies

Detected frameworks, languages, and tools.

Next.jsGoogle Analytics

Hosting & CDN

Hosting provider
AWS
CDN provider
CloudFront
IP address
18.172.64.3
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 18.172.64.3
  • 18.172.64.74
  • 18.172.64.46
  • 18.172.64.79
AAAA
  • 2600:9000:264a:6200:7:c178:7500:93a1
  • 2600:9000:264a:3a00:7:c178:7500:93a1
  • 2600:9000:264a:8800:7:c178:7500:93a1
  • 2600:9000:264a:ea00:7:c178:7500:93a1
  • 2600:9000:264a:400:7:c178:7500:93a1
  • 2600:9000:264a:fe00:7:c178:7500:93a1
  • 2600:9000:264a:2e00:7:c178:7500:93a1
  • 2600:9000:264a:3600:7:c178:7500:93a1
MX
  • inbound-smtp.us-east-1.amazonaws.com
TXT
  • google-site-verification=DRBUM0HwRvz5NpJTUt6LY-H5XujGcGaKSRnKb06ExOg
  • google-site-verification=y9NaSEldqeUC-DxV8Gz7vmK54Ngkd03cxxZcpQA8N2U
  • facebook-domain-verification=d0bxnohijsq7i3jz95q8h7hbagis8n
  • v=spf1 include:spf.mtasv.net include:sendgrid.net -all
  • google-site-verification=JSazXgfcAvNdPadjmFCOfRO1jzmQal-nSJOIRgAfMcU
NS
  • ns-517.awsdns-00.net
  • ns-117.awsdns-14.com
  • ns-1334.awsdns-38.org
  • ns-1923.awsdns-48.co.uk
CAA
  • 0 iodef "mailto:tong@ctw-inc.net"
  • 0 issue "sectigo.com"
  • 0 issue "amazon.com"
  • 0 issue "letsencrypt.org"
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Amazon
Subject
g123.jp
Valid from
Jul 19, 2026
Valid to
Feb 1, 2027
Days until expiry
191
SAN domains
g123.jp, *.g123.jp

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 2 · H2 15 · H3 68

Links

65 internal · 21 external · 0 broken

Images

30 total · 0 missing alt

Scripts / Styles

130 scripts · 5 stylesheets

JS / CSS size

1.8 MB · 88.8 KB

Page size

470 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
3
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Title longer than 60 characters
  • Meta description longer than 160 characters
  • Multiple H1 headings found

Accessibility issues

No accessibility issues detected.

Careers

View careers page

This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.

Scan details

Requested URL
https://g123.jp
Final URL
https://g123.jp/?lang=ja
HTTP status
200
HTTP version
HTTP/2
Response time
675 ms
HTML size
470 KB
Redirect chain
https://g123.jp → https://g123.jp/?lang=ja

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does g123.jp use?
g123.jp is built with Next.js, Google Analytics.
Is g123.jp secure (HTTPS)?
Yes. g123.jp uses TLS 1.3 with a certificate issued by Amazon, valid until Feb 1, 2027.
Who hosts g123.jp?
g123.jp is hosted on AWS, behind CloudFront CDN.
What is g123.jp's SEO score?
g123.jp scored 85/100 for SEO in the latest analysis (great).
What is g123.jp's overall website score?
g123.jp has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
Is g123.jp hiring?
g123.jp has a careers page; check it directly for current openings.