gns3.com
GNS3 | The software that empowers network professionals
Last scanned Aug 24, 2026, 1:22 PM
Overall score
Great
Summary
This website uses Express hosted on Cloudflare behind Cloudflare CDN. SEO is fair (55/100) and accessibility is good (80/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Cloudflare
Top issues to fix
8 issues found · 2 high priority
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+2 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
228 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Source: https://gns3.com/contact
Meta tags
- Title
- GNS3 | The software that empowers network professionals
- Description
- Canonical
- Language
- Charset
- Viewport
- user-scalable=no,width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 172.67.139.195
- 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
- gns3.com
- Valid from
- Aug 9, 2026
- Valid to
- Nov 7, 2026
- Days until expiry
- 74
- SAN domains
- gns3.com, *.gns3.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
7 internal · 10 external · 1 broken
Images
11 total · 0 missing alt
Scripts / Styles
32 scripts · 3 stylesheets
JS / CSS size
72.8 KB · 246 KB
Page size
2.4 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- No H1 heading found
- Missing <html lang> attribute
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://gns3.com
- Final URL
- https://gns3.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 228 ms
- HTML size
- 2.4 KB
- Redirect chain
- https://gns3.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does gns3.com use?
- gns3.com is built with Express, Node.js, Google Analytics, Cloudflare Analytics.
- Is gns3.com secure (HTTPS)?
- Yes. gns3.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Nov 7, 2026.
- Who hosts gns3.com?
- gns3.com is hosted on Cloudflare, behind Cloudflare CDN.
- What is gns3.com's SEO score?
- gns3.com scored 55/100 for SEO in the latest analysis (fair).
- What is gns3.com's overall website score?
- gns3.com has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
- Is gns3.com hiring?
- gns3.com has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card