diamond.jp
ダイヤモンド・オンライン
Last scanned Jul 24, 2026, 6:27 PM · 1 view
Overall score
Great
Summary
ダイヤモンド社のビジネスパーソン向け情報サイト。業界を深掘りした独自特集、経営・経済・マネー情報やスキルアップ記事を提供し、ビジネスリーダーの意思�… This website uses Meta Pixel hosted on IIJ - Internet Initiative Japan Inc., JP. SEO is good (75/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance good (85/100). Top issue: Meta description longer than 160 characters.
ダイヤモンド社のビジネスパーソン向け情報サイト。業界を深掘りした独自特集、経営・経済・マネー情報やスキルアップ記事を提供し、ビジネスリーダーの意思決定や課題解決に応えます。
- Japan
- Hosted on IIJ - Internet Initiative Japan Inc., JP
Top issues to fix
4 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
SEO
3 issue(s) found
Performance
145 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
ダイヤモンド社のビジネスパーソン向け情報サイト。業界を深掘りした独自特集、経営・経済・マネー情報やスキルアップ記事を提供し、ビジネスリーダーの意思決定や課題解決に応えます。
Meta tags
- Title
- ダイヤモンド・オンライン
- Description
- ダイヤモンド社のビジネスパーソン向け情報サイト。業界を深掘りした独自特集、経営・経済・マネー情報やスキルアップ記事を提供し、ビジネスリーダーの意思決定や課題解決に応えます。
- Canonical
- https://diamond.jp/
- Language
- ja
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- IIJ - Internet Initiative Japan Inc., JP
- CDN provider
- —
- IP address
- 210.148.177.240
- ASN
- AS2497 (IIJ - Internet Initiative Japan Inc., JP)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- GlobalSign nv-sa
- Subject
- *.diamond.jp
- Valid from
- Jan 19, 2026
- Valid to
- Feb 20, 2027
- Days until expiry
- 210
- SAN domains
- *.diamond.jp, diamond.jp
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 36 · H3 35
Links
131 internal · 31 external · 0 broken
Images
75 total · 0 missing alt
Scripts / Styles
30 scripts · 1 stylesheets
JS / CSS size
1.4 MB · 70.7 KB
Page size
183 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Meta description longer than 160 characters
- No H1 heading found
- No structured data (JSON-LD) found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://diamond.jp
- Final URL
- https://diamond.jp
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 142 ms
- HTML size
- 183 KB
- Redirect chain
- https://diamond.jp
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Frequently asked questions
- What technology does diamond.jp use?
- diamond.jp is built with Google Ads, Meta Pixel.
- Is diamond.jp secure (HTTPS)?
- Yes. diamond.jp uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Feb 20, 2027.
- Who hosts diamond.jp?
- diamond.jp is hosted on IIJ - Internet Initiative Japan Inc., JP.
- What is diamond.jp's SEO score?
- diamond.jp scored 75/100 for SEO in the latest analysis (fair).
- What is diamond.jp's overall website score?
- diamond.jp has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card