fftw.org

Scanned URL: https://fftw.org

📅 Scan completed: April 16, 2026 at 12:46 AM

29
/ 100
F
Poor
Overall Domain Score
SEO 31 · LLM 18 · Perf 36
31

πŸ” SEO Score

4 / 13 checks passed

18

πŸ€– LLM Readiness

2 / 11 checks passed

36

⚑ Performance

4 / 11 checks passed

πŸ“ Extracted Page Tags
Title Tag
FFTW Home Page
Meta Description
A fast, free C FFT library; includes real-complex, multidimensional, and parallel transforms. Benchmarked against many other FFTs.
H1 Heading
None found
Canonical URL
None found
πŸ” SEO Audit
31/100
❌ Title Tag
Length: 14 chars (Ideal: 30-60).
βœ… Meta Description
Length: 130 chars (Ideal: 50-160).
❌ H1 Tag
Found 0 H1 tags. Exactly 1 is recommended.
❌ Canonical URL
Missing canonical tag.
❌ Open Graph Tags
Found 0 OG properties (4+ recommended).
βœ… Indexability
Page allows indexing.
❌ Mobile Viewport
Missing viewport tag.
❌ Image Alt Text
1 of 3 images missing alt.
❌ Sitemap
No sitemap found in robots.txt.
❌ Heading Hierarchy
Missing H1 or H2 tags.
βœ… Internal Links
Found 10 internal links.
❌ HSTS Security
Missing HSTS header.
βœ… HTTPS
Loads securely over HTTPS.
πŸ€– LLMO
18/100
❌ Structured Data (JSON-LD)
No JSON-LD found.
❌ Schema Entities
No schema entities.
❌ FAQ Schema
Missing FAQ schema.
βœ… Contextual Summary
Description provides good AI context.
❌ E-E-A-T (Author)
No author meta or schema.
❌ Organisation Schema
Missing Organization schema.
❌ Breadcrumb Schema
Missing BreadcrumbList.
βœ… AI Crawler Access
AI agents not blocked.
❌ Language Declaration
Missing <html> lang attribute.
❌ Semantic Structure
No semantic HTML5 wrappers.
❌ Entity Verification Links
No entity validation links.
⚑ Performance
36/100
Network Waterfall (Total: 118ms)
  • DNS: 29ms
  • Connect: 50ms
  • TTFB: 118ms
  • Download: 0ms
βœ… Time to First Byte (TTFB)
TTFB: 118ms (Target: < 600ms).
βœ… HTML Payload Size
Raw HTML: 6KB (Target: < 150KB).
βœ… Text Compression
Compression enabled (gzip).
❌ Cache Policies
Missing Cache-Control headers.
❌ CDN Usage
No CDN headers found.
βœ… Secure Delivery (HTTPS)
Served securely.
❌ Modern Protocol
Using HTTP/1.1.
❌ Native Lazy Loading
No lazy loading detected.
❌ Minified Assets
No minified assets linked.
❌ Preload / Preconnect Hints
Missing preload/preconnect hints.
❌ Character Set
Missing UTF-8 charset.
πŸ›‘οΈ Security & Blacklist
Clean
βœ… Domain is clean.
βœ… Spamhaus DBLVerify β†—
Lookup inconclusive β€” use the Verify link to check manually.
βœ… SURBLVerify β†—
Not listed β€” no threats detected.
βœ… URIBLVerify β†—
Lookup inconclusive β€” use the Verify link to check manually.
βœ… Google Safe BrowsingVerify β†—
No warnings found in Google Safe Browsing transparency report.
βš™οΈ Technologies
E-Commerce
Magento
Infrastructure & CDN
Nginx
πŸ“‹ WHOIS
Registrar
Domain Registration Services, Inc. dba dotEarth.com
Registered
1999-06-07T19:29:50Z
Expires
2029-06-07T19:30:27Z
Last Updated
2019-12-18T13:18:12Z
Status
clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Servers
ns2.afraid.org, ns.fftw.org, puck.nether.net
πŸ”— DNS Records
TypeValue
A216.137.187.110
MXfftw.org
TXTv=spf1 ip4:216.137.187.110 -all
NSns2.afraid.org
NSns.fftw.org
NSpuck.nether.net

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