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SGSiteGraph

gunicorn.org

Gunicorn - Python WSGI HTTP Server for UNIX

Last scanned Aug 24, 2026, 1:22 PM

82

Overall score

Great

Summary

This website is hosted on Fastly. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

United States
Hosted on Fastly

Top issues to fix

8 issues found · 3 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing X-Content-Type-Options header

    Security

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

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+2 more issues — details in the sections below.

70

SEO

4 issue(s) found

100

Performance

209 ms

65

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.

Source: https://gunicorn.org/sponsor/

Meta tags

Title
Gunicorn - Python WSGI HTTP Server for UNIX
Description
Canonical
https://gunicorn.org/
Language
en
Charset
utf-8
Viewport
width=device-width,initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
Fastly
CDN provider
Fastly
IP address
185.199.111.153
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 185.199.111.153
  • 185.199.109.153
  • 185.199.110.153
  • 185.199.108.153
AAAA
  • 2606:50c0:8003::153
  • 2606:50c0:8000::153
  • 2606:50c0:8001::153
  • 2606:50c0:8002::153
MX
  • in2-smtp.messagingengine.com
  • in1-smtp.messagingengine.com
TXT
  • 1|www.gunicorn.org
NS
  • ns200.anycast.me
  • dns200.anycast.me
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
gunicorn.org
Valid from
Aug 19, 2026
Valid to
Nov 17, 2026
Days until expiry
84
SAN domains
gunicorn.org, www.gunicorn.org

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 6 · H3 7

Links

41 internal · 7 external · 0 broken

Images

4 total · 0 missing alt

Scripts / Styles

6 scripts · 6 stylesheets

JS / CSS size

116 KB · 168 KB

Page size

39.8 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
38

SEO issues

  • Missing meta description
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://gunicorn.org
Final URL
https://gunicorn.org
HTTP status
200
HTTP version
HTTP/2
Response time
209 ms
HTML size
39.8 KB
Redirect chain
https://gunicorn.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does gunicorn.org use?
We did not detect any specific technologies for gunicorn.org in the latest scan.
Is gunicorn.org secure (HTTPS)?
Yes. gunicorn.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 17, 2026.
Who hosts gunicorn.org?
gunicorn.org is hosted on Fastly, behind Fastly CDN.
What is gunicorn.org's SEO score?
gunicorn.org scored 70/100 for SEO in the latest analysis (fair).
What is gunicorn.org's overall website score?
gunicorn.org has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.