clojure.org
Clojure
Last scanned Jul 26, 2026, 12:19 PM
Overall score
Fair
Summary
This website uses jQuery hosted on AWS behind CloudFront CDN. SEO is fair (60/100) and accessibility is good (75/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on AWS
Top issues to fix
10 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.
+4 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
4 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Clojure
- Description
- 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
- AWS
- CDN provider
- CloudFront
- IP address
- 13.225.5.65
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Amazon
- Subject
- clojure.org
- Valid from
- Apr 28, 2026
- Valid to
- Nov 11, 2026
- Days until expiry
- 106
- SAN domains
- clojure.org, *.clojure.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 0 · H2 1 · H3 6
Links
28 internal · 7 external · 0 broken
Images
3 total · 1 missing alt
Scripts / Styles
7 scripts · 8 stylesheets
JS / CSS size
266 KB · 65.6 KB
Page size
20.3 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 6
- sitemap.xml
- Found
- URLs in sitemap
- 750
SEO issues
- Missing meta description
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- More than 20% of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://clojure.org
- Final URL
- https://clojure.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 4 ms
- HTML size
- 20.3 KB
- Redirect chain
- https://clojure.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does clojure.org use?
- clojure.org is built with jQuery.
- Is clojure.org secure (HTTPS)?
- Yes. clojure.org uses TLS 1.3 with a certificate issued by Amazon, valid until Nov 11, 2026.
- Who hosts clojure.org?
- clojure.org is hosted on AWS, behind CloudFront CDN.
- What is clojure.org's SEO score?
- clojure.org scored 60/100 for SEO in the latest analysis (fair).
- What is clojure.org's overall website score?
- clojure.org has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card