nixos.org
Scanned URL: https://nixos.org
92
π SEO Score
12 / 13 checks passed
45
π€ LLM Readiness
5 / 11 checks passed
64
β‘ Performance
7 / 11 checks passed
π Extracted Page Tags
Title Tag
Nix & NixOS | Declarative builds and deployments
Meta Description
Nix is a tool that takes a unique approach to package management and system configuration. Learn how to make reproducible, declarative and reliable systems.
H1 Heading
Declarative builds and deployments.
Canonical URL
https://nixos.org/
π SEO Audit
92/100β
Title Tag
Length: 48 chars (Ideal: 30-60).
β
Meta Description
Length: 156 chars (Ideal: 50-160).
β
H1 Tag
Found 1 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
0 of 2 images missing alt.
β
Sitemap
Sitemap declared.
β
Heading Hierarchy
H1 and H2 structure detected.
β
Internal Links
Found 29 internal links.
β
HSTS Security
HSTS header present.
β
HTTPS
Loads securely over HTTPS.
π€ LLMO
45/100β Structured Data (JSON-LD)
No JSON-LD found.
β Schema Entities
No schema entities.
β FAQ Schema
Missing FAQ schema.
β
Contextual Summary
Description provides good 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'.
β
Semantic Structure
Uses <main> or <article>.
β
Entity Verification Links
Social/publisher profiles linked.
β‘ Performance
64/100Network Waterfall (Total: 471ms)
- DNS: 125ms
- Connect: 126ms
- TTFB: 400ms
- Download: 71ms
β
Time to First Byte (TTFB)
TTFB: 400ms (Target: < 600ms).
β
HTML Payload Size
Raw HTML: 12.8KB (Target: < 150KB).
β
Text Compression
Compression enabled (gzip).
β
Cache Policies
Cache-Control headers set.
β CDN Usage
No CDN headers found.
β
Secure Delivery (HTTPS)
Served securely.
β Modern Protocol
Using HTTP/1.1.
β
Native Lazy Loading
Images use loading='lazy'.
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
Lookup inconclusive β use the Verify link to check manually.
β
Google Safe BrowsingVerify β
No unsafe content found per Google Safe Browsing.
βοΈ Technologies
E-Commerce
Magento
π WHOIS
Registrar
Gandi SAS
Expires
2027-03-17
Registered
2007-03-17
Last Updated
2026-01-21
Status
client transfer prohibited
Name Servers
ns-161-c.gandi.net, ns-177-a.gandi.net, ns-61-b.gandi.net
π DNS Records
| Type | Value |
|---|---|
| A | 99.83.231.61 |
| A | 75.2.60.5 |
| MX | umbriel.nixos.org |
| TXT | apple-domain-verification=OvacO4lGB9A6dBFg |
| TXT | google-site-verification=Pm5opvmNjJOwdb7JnuVJ_eFBPaZYWNcAavY-08AJoGc |
| TXT | v=spf1 a:umbriel.nixos.org -all |
| TXT | brevo-code:f580a125e215ecb440363a15cdf47a17 |
| NS | ns-177-a.gandi.net |
| NS | ns-161-c.gandi.net |
| NS | ns-61-b.gandi.net |