npcap.com
Npcap: Windows Packet Capture Library & Driver
Last scanned Aug 24, 2026, 1:23 PM
Overall score
Great
Summary
Npcap is the packet capture library for Windows 10 and 11. This website uses Apache. SEO is good (85/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.
Npcap is the packet capture library for Windows 10 and 11. Fast, secure, and compatible successor to WinPcap. Free to use.
- United States
Top issues to fix
7 issues found · 2 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 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.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
245 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Npcap is the packet capture library for Windows 10 and 11. Fast, secure, and compatible successor to WinPcap. Free to use.
Meta tags
- Title
- Npcap: Windows Packet Capture Library & Driver
- Description
- Npcap is the packet capture library for Windows 10 and 11. Fast, secure, and compatible successor to WinPcap. Free to use.
- Canonical
- Language
- en
- Charset
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- NOARCHIVE
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- 50.116.1.184
- ASN
- AS63949 ()
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- insecure.com
- Valid from
- Jul 20, 2026
- Valid to
- Oct 18, 2026
- Days until expiry
- 53
- SAN domains
- insecure.com, insecure.org, issues.nmap.com, issues.nmap.org, issues.npcap.com, issues.npcap.org, nmap.com, nmap.net, nmap.org, npcap.com, npcap.org, seclists.com, seclists.net, seclists.org, sectools.com, sectools.net, sectools.org, secwiki.com, secwiki.net, secwiki.org, svn.nmap.org, www.nmap.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 0
Links
18 internal · 48 external · 0 broken
Images
9 total · 0 missing alt
Scripts / Styles
4 scripts · 3 stylesheets
JS / CSS size
2.6 KB · 5.7 KB
Page size
19.6 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 2
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://npcap.com
- Final URL
- https://npcap.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 245 ms
- HTML size
- 19.6 KB
- Redirect chain
- https://npcap.com
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Frequently asked questions
- What technology does npcap.com use?
- npcap.com is built with Google Analytics, Apache.
- Is npcap.com secure (HTTPS)?
- Yes. npcap.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 18, 2026.
- Who hosts npcap.com?
- Hosting provider information for npcap.com is not available yet.
- What is npcap.com's SEO score?
- npcap.com scored 85/100 for SEO in the latest analysis (great).
- What is npcap.com's overall website score?
- npcap.com has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card