What technology does tldp.org use?

We did not detect any specific technologies for tldp.org in the latest scan.

Is tldp.org secure (HTTPS)?

Yes. tldp.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 8, 2026.

Hosting provider information for tldp.org is not available yet.

What is tldp.org's SEO score?

tldp.org scored 55/100 for SEO in the latest analysis (fair).

What is tldp.org's overall website score?

tldp.org has an overall SiteGraph score of 69/100, combining SEO, performance, security, and accessibility.

Has tldp.org's score changed over time?

tldp.org's overall score has declined by 2 points (from 71 to 69) since Jul 25, 2026.

tldp.org

The Linux Documentation Project

Last scanned Aug 1, 2026, 9:00 AM · 8 views

Overall score

Fair

Summary

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. SEO is fair (55/100) and accessibility is good (75/100). Security scores fair (50/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.

Top issues to fix

15 issues found · 5 high priority

TLS certificate expires in 7 days
Security
Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.
Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
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 X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

+9 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

252 ms

Security

HTTPS & header checks

Accessibility

3 issue(s) found

Score history

-2 overall since Jul 25, 2026

Overall: 69
SEO: 55
Security: 50
Performance: 100
Accessibility: 75

Organization

Company details published in this site's own structured data.

Meta tags

Title: The Linux Documentation Project
Description: The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.
Canonical
Language
Charset: iso-8859-1
Viewport
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Google Trust Services
Subject: tldp.org
Valid from: May 10, 2026
Valid to: Aug 8, 2026
Days until expiry: 7
SAN domains: tldp.org, *.tldp.org, tldp.net, *.tldp.net

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

23 internal · 5 external · 20 broken

Images

4 total · 0 missing alt

Scripts / Styles

0 scripts · 0 stylesheets

JS / CSS size

0 B · 147 B

Page size

9.9 KB

Robots.txt & Sitemap

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

SEO issues

Meta description longer than 160 characters
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://tldp.org
Final URL: https://tldp.org
HTTP status: 200
HTTP version: HTTP/2
Response time: 252 ms
HTML size: 9.9 KB
Redirect chain: https://tldp.org

See something wrong on this report? Request a correction

Frequently asked questions

What technology does tldp.org use?: We did not detect any specific technologies for tldp.org in the latest scan.
Is tldp.org secure (HTTPS)?: Yes. tldp.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 8, 2026.
Who hosts tldp.org?: Hosting provider information for tldp.org is not available yet.
What is tldp.org's SEO score?: tldp.org scored 55/100 for SEO in the latest analysis (fair).
What is tldp.org's overall website score?: tldp.org has an overall SiteGraph score of 69/100, combining SEO, performance, security, and accessibility.
Has tldp.org's score changed over time?: tldp.org's overall score has declined by 2 points (from 71 to 69) since Jul 25, 2026.