postgresql.org
PostgreSQL: The world's most advanced open source database
Last scanned Jul 18, 2026, 8:49 PM
Overall score
Excellent
Top issues to fix
3 issues found
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Summary
The official site for PostgreSQL, the world's most advanced open source database. This website uses Nginx hosted on RMH-14 - Rackspace Hosting, US behind Fastly CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (95/100) and performance excellent (100/100). Top issue: Missing canonical link.
SEO
2 issue(s) found
Performance
314 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- PostgreSQL: The world's most advanced open source database
- Description
- The official site for PostgreSQL, the world's most advanced open source database
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- RMH-14 - Rackspace Hosting, US
- CDN provider
- Fastly
- IP address
- 72.32.157.230
- ASN
- AS33070 (RMH-14 - Rackspace Hosting, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- www.postgresql.org
- Valid from
- Jun 3, 2026
- Valid to
- Sep 1, 2026
- Days until expiry
- 44
- SAN domains
- archives.postgresql.org, postgresql.org, stackbuilder.postgresql.org, www.postgresql.org, zetar.postgresql.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 8 · H3 15
Links
44 internal · 12 external · 0 broken
Images
10 total · 0 missing alt
Scripts / Styles
5 scripts · 3 stylesheets
JS / CSS size
5.8 KB · 240 KB
Page size
24.3 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 9
- sitemap.xml
- Found
- URLs in sitemap
- 29578
SEO issues
- Missing canonical link
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://postgresql.org
- Final URL
- https://www.postgresql.org/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 314 ms
- HTML size
- 24.3 KB
- Redirect chain
- https://postgresql.org → https://www.postgresql.org/
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Frequently asked questions
- What technology does postgresql.org use?
- postgresql.org is built with Google Analytics, Nginx.
- Is postgresql.org secure (HTTPS)?
- Yes. postgresql.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 1, 2026.
- Who hosts postgresql.org?
- postgresql.org is hosted on RMH-14 - Rackspace Hosting, US, behind Fastly CDN.
- What is postgresql.org's SEO score?
- postgresql.org scored 85/100 for SEO in the latest analysis (great).
- What is postgresql.org's overall website score?
- postgresql.org has an overall SiteGraph score of 94/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card