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SGSiteGraph

postgresql.org

PostgreSQL: The world's most advanced open source database

Last scanned Jul 18, 2026, 8:49 PM

94

Overall score

Excellent

Top issues to fix

3 issues found

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add 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.

85

SEO

2 issue(s) found

100

Performance

314 ms

95

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

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

OpenGraph & Twitter Card

OpenGraph

og:title
PostgreSQL
og:description
The world's most advanced open source database.
og:type
article
og:url
https://www.postgresql.org/

Twitter Card

twitter:card
twitter:title
twitter:description

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

CDN provider
Fastly
IP address
72.32.157.230
ASN
AS33070 (RMH-14 - Rackspace Hosting, US)

DNS records

TypeValue
A
  • 72.32.157.230
  • 217.196.149.50
  • 87.238.57.232
AAAA
  • 2001:4800:3e1:1::230
  • 2a02:c0:301:0:ffff::32
  • 2a02:16a8:dc51::50
MX
TXT
NS
CAA
CNAME
  • www.mirrors.postgresql.org
IPv6 supportYes

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/

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.