fast.ai
fast.ai—Making neural nets uncool again – fast.ai
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Fair
Summary
This website is hosted on Cloudflare. SEO is good (75/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Cloudflare
Top issues to fix
9 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.
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.
+3 more issues — details in the sections below.
SEO
3 issue(s) found
Performance
757 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- fast.ai—Making neural nets uncool again – fast.ai
- Description
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0, user-scalable=yes
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.26.3.19
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- fast.ai
- Valid from
- May 30, 2026
- Valid to
- Aug 28, 2026
- Days until expiry
- 32
- SAN domains
- fast.ai, *.fast.ai
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 0 · H3 162
Links
164 internal · 10 external · 2 broken
Images
117 total · 115 missing alt
Scripts / Styles
22 scripts · 9 stylesheets
JS / CSS size
107 KB · 568 B
Page size
245 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 164
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://fast.ai
- Final URL
- https://www.fast.ai/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 752 ms
- HTML size
- 245 KB
- Redirect chain
- https://fast.ai → http://www.fast.ai/ → https://www.fast.ai/
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Frequently asked questions
- What technology does fast.ai use?
- We did not detect any specific technologies for fast.ai in the latest scan.
- Is fast.ai secure (HTTPS)?
- Yes. fast.ai uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 28, 2026.
- Who hosts fast.ai?
- fast.ai is hosted on Cloudflare, behind Cloudflare CDN.
- What is fast.ai's SEO score?
- fast.ai scored 75/100 for SEO in the latest analysis (fair).
- What is fast.ai's overall website score?
- fast.ai has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card