viaf.org
VIAF
Last scanned Aug 5, 2026, 11:00 PM · 8 views
Overall score
Fair
Summary
The VIAF® (Virtual International Authority File) combines multiple name authority files into a single OCLC-hosted name authority service. This website uses Next.js hosted on Cloudflare behind Cloudflare CDN. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.
The VIAF® (Virtual International Authority File) combines multiple name authority files into a single OCLC-hosted name authority service.
- United States
- Hosted on Cloudflare
Top issues to fix
10 issues found · 3 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.
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.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+4 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
716 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+4 overall since Jul 26, 2026
- Overall
- 79
- SEO
- 65
- Security
- 65
- Performance
- 100
- Accessibility
- 90
Organization
Company details published in this site's own structured data.
The VIAF® (Virtual International Authority File) combines multiple name authority files into a single OCLC-hosted name authority service.
Contact
Email, phone, and address published on this site's own pages.
- bibchange@oclc.org
Meta tags
- Title
- VIAF
- Description
- The VIAF® (Virtual International Authority File) combines multiple name authority files into a single OCLC-hosted name authority service.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.18.43.23
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- viaf.org
- Valid from
- Jul 24, 2026
- Valid to
- Oct 23, 2026
- Days until expiry
- 78
- SAN domains
- viaf.org, *.viaf.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
58 internal · 5 external · 0 broken
Images
58 total · 0 missing alt
Scripts / Styles
35 scripts · 1 stylesheets
JS / CSS size
30.3 KB · 151 KB
Page size
242 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://viaf.org
- Final URL
- https://viaf.org/en
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 712 ms
- HTML size
- 242 KB
- Redirect chain
- https://viaf.org → https://viaf.org/en
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does viaf.org use?
- viaf.org is built with Next.js.
- Is viaf.org secure (HTTPS)?
- Yes. viaf.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 23, 2026.
- Who hosts viaf.org?
- viaf.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is viaf.org's SEO score?
- viaf.org scored 65/100 for SEO in the latest analysis (fair).
- What is viaf.org's overall website score?
- viaf.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
- Has viaf.org's score changed over time?
- viaf.org's overall score has improved by 4 points (from 75 to 79) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card