atmarkit.co.jp
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Last scanned Jul 26, 2026, 5:47 AM
Overall score
Great
Summary
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- United States
- Hosted on AWS
Top issues to fix
5 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Slow estimated load (7.4s)
PerformanceUse a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
SEO
1 issue(s) found
Performance
7.44 s
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
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Meta tags
- Title
- IT�G�L�X�p�[�g�̂��߂̖����������f�B�A - ��IT
- Description
- �v���t�F�b�V���i����IT�Z�p�ҁE�Ǘ��҂̂��߂̃R���e���c�ƃR�~���j�e�B���ڂ̖��������T�C�g�B���i���Z�p�Ɋւ��鍂�x�ȉ����L�����A�f���A�����R�[�i�[�ȂǁB
- Canonical
- https://atmarkit.itmedia.co.jp/
- Language
- ja
- Charset
- shift_jis
- Viewport
- Robots meta
- noydir
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- —
- IP address
- 13.193.54.1
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- Amazon
- Subject
- itmedia.co.jp
- Valid from
- May 18, 2026
- Valid to
- Dec 1, 2026
- Days until expiry
- 128
- SAN domains
- itmedia.co.jp, *.itmedia.co.jp, *.atmarkit.itmedia.co.jp, *.sys.itmedia.co.jp, *.ips.itmedia.co.jp, *.techfactory.itmedia.co.jp, *.office.itmedia.co.jp, *.kn.itmedia.co.jp, *.executive.itmedia.co.jp, *.cms.itmedia.co.jp, *.marketing.itmedia.co.jp, *.api.itmedia.co.jp, *.techtarget.itmedia.co.jp, *.ips.sys.itmedia.co.jp
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 6
Links
56 internal · 34 external · 0 broken
Images
18 total · 1 missing alt
Scripts / Styles
58 scripts · 5 stylesheets
JS / CSS size
150 KB · 2.1 KB
Page size
75.9 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 9
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- No structured data (JSON-LD) found
Accessibility issues
- Missing viewport meta tag
Scan details
- Requested URL
- https://atmarkit.co.jp
- Final URL
- https://atmarkit.itmedia.co.jp/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 7.44 s
- HTML size
- 75.9 KB
- Redirect chain
- https://atmarkit.co.jp → https://atmarkit.itmedia.co.jp/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does atmarkit.co.jp use?
- atmarkit.co.jp is built with Google Analytics, Meta Pixel, Nginx.
- Is atmarkit.co.jp secure (HTTPS)?
- Yes. atmarkit.co.jp uses TLS 1.2 with a certificate issued by Amazon, valid until Dec 1, 2026.
- Who hosts atmarkit.co.jp?
- atmarkit.co.jp is hosted on AWS.
- What is atmarkit.co.jp's SEO score?
- atmarkit.co.jp scored 90/100 for SEO in the latest analysis (excellent).
- What is atmarkit.co.jp's overall website score?
- atmarkit.co.jp has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card