hdfgroup.org
The HDF Group - The HDF Group - ensuring long-term access and usability of HDF data and supporting users of HDF technologies
Last scanned Aug 24, 2026, 1:22 PM · 1 view
Overall score
Fair
Summary
This website uses WordPress. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Title longer than 60 characters.
Top issues to fix
8 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
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.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
658 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- The HDF Group - The HDF Group - ensuring long-term access and usability of HDF data and supporting users of HDF technologies
- Description
- Canonical
- https://www.hdfgroup.org/
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- 67.227.248.143
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT |
|
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- hdfgroup.org
- Valid from
- Jul 22, 2026
- Valid to
- Oct 20, 2026
- Days until expiry
- 56
- SAN domains
- hdfgroup.org, www.hdfgroup.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 1 · H3 5
Links
32 internal · 22 external · 0 broken
Images
5 total · 1 missing alt
Scripts / Styles
18 scripts · 8 stylesheets
JS / CSS size
198 KB · 572 KB
Page size
165 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Missing meta description
- No H1 heading found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://hdfgroup.org
- Final URL
- https://www.hdfgroup.org/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 655 ms
- HTML size
- 165 KB
- Redirect chain
- https://hdfgroup.org → https://www.hdfgroup.org/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does hdfgroup.org use?
- hdfgroup.org is built with PHP, WordPress, jQuery, Google Analytics, Apache.
- Is hdfgroup.org secure (HTTPS)?
- Yes. hdfgroup.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 20, 2026.
- Who hosts hdfgroup.org?
- Hosting provider information for hdfgroup.org is not available yet.
- What is hdfgroup.org's SEO score?
- hdfgroup.org scored 70/100 for SEO in the latest analysis (fair).
- What is hdfgroup.org's overall website score?
- hdfgroup.org has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card