art21.org
Art21
Last scanned Aug 24, 2026, 1:22 PM · 1 view
Overall score
Great
Summary
The mission of Art21 is to educate and expand access to contemporary art through the production of documentary films, resources, and public programs. This website uses WordPress behind Cloudflare CDN. SEO is good (85/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Multiple H1 headings found.
The mission of Art21 is to educate and expand access to contemporary art through the production of documentary films, resources, and public programs.
Top issues to fix
8 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.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
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.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
+2 more issues — details in the sections below.
SEO
2 issue(s) found
Performance
80 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Art21
- Description
- The mission of Art21 is to educate and expand access to contemporary art through the production of documentary films, resources, and public programs.
- Canonical
- https://art21.org/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- IP address
- 141.193.213.11
- ASN
- —
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
- art21.org
- Valid from
- Jul 2, 2026
- Valid to
- Sep 30, 2026
- Days until expiry
- 36
- SAN domains
- art21.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyEnabled
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 3 · H2 14 · H3 24
Links
54 internal · 10 external · 1 broken
Images
23 total · 21 missing alt
Scripts / Styles
46 scripts · 3 stylesheets
JS / CSS size
545 KB · 5.9 KB
Page size
73.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 1
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Multiple H1 headings found
- No structured data (JSON-LD) found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://art21.org
- Final URL
- https://art21.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 79 ms
- HTML size
- 73.0 KB
- Redirect chain
- https://art21.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does art21.org use?
- art21.org is built with WordPress, jQuery, Google Analytics, Google Ads, Meta Pixel.
- Is art21.org secure (HTTPS)?
- Yes. art21.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 30, 2026.
- Who hosts art21.org?
- Hosting provider information for art21.org is not available yet.
- What is art21.org's SEO score?
- art21.org scored 85/100 for SEO in the latest analysis (great).
- What is art21.org's overall website score?
- art21.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card