d3js.org
Scanned URL: https://d3js.org
54
π SEO Score
7 / 13 checks passed
27
π€ LLM Readiness
3 / 11 checks passed
64
β‘ Performance
7 / 11 checks passed
π Extracted Page Tags
Title Tag
D3 by Observable | The JavaScript library for bespoke data visualization
Meta Description
The JavaScript library for bespoke data visualization
H1 Heading
D3
Canonical URL
https://d3js.org
π SEO Audit
54/100β Title Tag
Length: 72 chars (Ideal: 30-60).
β
Meta Description
Length: 53 chars (Ideal: 50-160).
β H1 Tag
Found 2 H1 tags. Exactly 1 is recommended.
β
Canonical URL
Canonical URL is set.
β Open Graph Tags
Found 0 OG properties (4+ recommended).
β
Indexability
Page allows indexing.
β
Mobile Viewport
Viewport meta tag present.
β Image Alt Text
56 of 57 images missing alt.
β Sitemap
No sitemap found in robots.txt.
β
Heading Hierarchy
H1 and H2 structure detected.
β
Internal Links
Found 10 internal links.
β HSTS Security
Missing HSTS header.
β
HTTPS
Loads securely over HTTPS.
π€ LLMO
27/100β Structured Data (JSON-LD)
No JSON-LD found.
β Schema Entities
No schema entities.
β FAQ Schema
Missing FAQ schema.
β Contextual Summary
Description too short for AI context.
β E-E-A-T (Author)
No author meta or schema.
β Organisation Schema
Missing Organization schema.
β Breadcrumb Schema
Missing BreadcrumbList.
β
AI Crawler Access
AI agents not blocked.
β
Language Declaration
Language set to 'en-US'.
β
Semantic Structure
Uses <main> or <article>.
β Entity Verification Links
No entity validation links.
β‘ Performance
64/100Network Waterfall (Total: 156ms)
- DNS: 29ms
- Connect: 36ms
- TTFB: 131ms
- Download: 25ms
β
Time to First Byte (TTFB)
TTFB: 131ms (Target: < 600ms).
β
HTML Payload Size
Raw HTML: 23.1KB (Target: < 150KB).
β
Text Compression
Compression enabled (gzip).
β
Cache Policies
Cache-Control headers set.
β
CDN Usage
Edge delivery detected.
β
Secure Delivery (HTTPS)
Served securely.
β Modern Protocol
Using HTTP/1.1.
β Native Lazy Loading
No lazy loading detected.
β Minified Assets
No minified assets linked.
β Preload / Preconnect Hints
Missing preload/preconnect hints.
β
Character Set
UTF-8 declared.
π‘οΈ Security & Blacklist
Cleanβ
Domain is clean.
β
Spamhaus DBLVerify β
Lookup inconclusive β use the Verify link to check manually.
β
SURBLVerify β
Not listed β no threats detected.
β
URIBLVerify β
Not listed β no threats detected.
β
Google Safe BrowsingVerify β
No warnings found in Google Safe Browsing transparency report.
βοΈ Technologies
E-Commerce
Magento
Infrastructure & CDN
Cloudflare
π WHOIS
Registrar
1API GmbH
Expires
2028-06-21
Registered
2011-06-21
Last Updated
2025-11-20
Status
client transfer prohibited
Name Servers
cortney.ns.cloudflare.com, hans.ns.cloudflare.com
π DNS Records
| Type | Value |
|---|---|
| A | 172.64.80.1 |
| MX | eforward4.registrar-servers.com |
| MX | eforward5.registrar-servers.com |
| MX | eforward1.registrar-servers.com |
| MX | eforward2.registrar-servers.com |
| MX | eforward3.registrar-servers.com |
| TXT | google-site-verification=5IQxt3Rp9QdGaWGk_wT3dqmsLsnysPRBfxBL5pFRck4 |
| TXT | v=spf1 include:spf.efwd.registrar-servers.com ~all |
| NS | hans.ns.cloudflare.com |
| NS | cortney.ns.cloudflare.com |