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kernel.org

The Linux Kernel Archives

Last scanned Jul 18, 2026, 8:49 PM

87

Overall score

Great

Top issues to fix

7 issues found · 2 high priority

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+1 more issue — details in the sections below.

Summary

This website uses Nginx hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG. SEO is fair (60/100) and accessibility is excellent (95/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.

60

SEO

6 issue(s) found

100

Performance

245 ms

100

Security

HTTPS & header checks

95

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Source: https://www.kernel.org/category/contact-us.html

Meta tags

Title
The Linux Kernel Archives
Description
Canonical
Language
en
Charset
utf-8
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

CDN provider
—
IP address
172.105.4.254
ASN
AS63949 (AKAMAI-LINODE-AP - Akamai Connected Cloud, SG)

DNS records

TypeValue
A
  • 172.105.4.254
AAAA
  • 2600:3c04:e001:324:0:1991:8:25
MX
  • smtp1.kernel.org
  • smtp3.kernel.org
  • smtp2.kernel.org
TXT
  • google-site-verification=nb4Wx5xBQM3b-a3OV2KSlPL786714Y7M6GfBtJf1opQ
  • v=spf1 include:_spf.kernel.org ~all
NS
  • ns41.constellix.net
  • ns31.constellix.com
  • ns51.constellix.net
  • ns11.constellix.com
  • ns61.constellix.net
  • ns21.constellix.com
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
tor.source.kernel.org
Valid from
Jun 15, 2026
Valid to
Sep 13, 2026
Days until expiry
56
SAN domains
android.kernel.org, git.kernel.org, kernel.org, linux.kernel.org, lore.kernel.org, origin.kernel.org, tor.source.kernel.org, wireless.kernel.org, www.kernel.org

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 2 · H3 0

Links

11 internal · 81 external · 0 broken

Images

8 total · 0 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 6.4 KB

Page size

17.7 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Missing viewport meta tag

Scan details

Requested URL
https://kernel.org
Final URL
https://kernel.org
HTTP status
200
HTTP version
HTTP/2
Response time
245 ms
HTML size
17.7 KB
Redirect chain
https://kernel.org

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Frequently asked questions

What technology does kernel.org use?
kernel.org is built with Nginx.
Is kernel.org secure (HTTPS)?
Yes. kernel.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 13, 2026.
Who hosts kernel.org?
kernel.org is hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG.
What is kernel.org's SEO score?
kernel.org scored 60/100 for SEO in the latest analysis (fair).
What is kernel.org's overall website score?
kernel.org has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.