k3s.io
K3s
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Great
Summary
This website uses Google Analytics hosted on Fastly behind Fastly CDN. SEO is good (75/100) and accessibility is fair (70/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Fastly
Top issues to fix
7 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
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.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
214 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Meta tags
- Title
- K3s
- Description
- Canonical
- https://k3s-io.github.io/
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
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
- k3s.io
- Valid from
- Jun 28, 2026
- Valid to
- Sep 26, 2026
- Days until expiry
- 62
- SAN domains
- k3s.io
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 3 · H3 0
Links
2 internal · 11 external · 0 broken
Images
7 total · 4 missing alt
Scripts / Styles
6 scripts · 1 stylesheets
JS / CSS size
424 KB · 177 KB
Page size
14.1 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 2
SEO issues
- Missing meta description
- No structured data (JSON-LD) found
- robots.txt not found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://k3s.io
- Final URL
- https://k3s.io
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 214 ms
- HTML size
- 14.1 KB
- Redirect chain
- https://k3s.io
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does k3s.io use?
- k3s.io is built with Google Analytics.
- Is k3s.io secure (HTTPS)?
- Yes. k3s.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 26, 2026.
- Who hosts k3s.io?
- k3s.io is hosted on Fastly, behind Fastly CDN.
- What is k3s.io's SEO score?
- k3s.io scored 75/100 for SEO in the latest analysis (fair).
- What is k3s.io's overall website score?
- k3s.io has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card