What technology does centos.org use?

centos.org is built with Bootstrap, Apache.

Is centos.org secure (HTTPS)?

Yes. centos.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 24, 2026.

Who hosts centos.org?

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

What is centos.org's SEO score?

centos.org scored 50/100 for SEO in the latest analysis (fair).

What is centos.org's overall website score?

centos.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.

Has centos.org's score changed over time?

centos.org's overall score has declined by 1 point (from 82 to 81) since Jul 18, 2026.

centos.org

The CentOS Project

Last scanned Jul 29, 2026, 2:00 PM · 7 views

Overall score

Great

Summary

This website uses Apache. SEO is fair (50/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

10 issues found · 3 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
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.
TLS certificate expires in 25 days
Security
Renew soon or enable auto-renewal to avoid a browser-warning outage.
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.

+4 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

137 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

-1 overall since Jul 18, 2026

Overall: 81
SEO: 50
Security: 90
Performance: 100
Accessibility: 90

Organization

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

YouTube Facebook LinkedIn X (Twitter)

Meta tags

Title: The CentOS Project
Description
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0, shrink-to-fit=no
Robots meta
Manifest: https://www.centos.org/site.webmanifest

Technologies

Detected frameworks, languages, and tools.

Bootstrap Apache

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: Let's Encrypt
Subject: centos.org
Valid from: May 26, 2026
Valid to: Aug 24, 2026
Days until expiry: 25
SAN domains: centos.org, www.centos.org

Security headers

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

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 3 · H3 0

Links

22 internal · 75 external · 20 broken

Images

46 total · 0 missing alt

Scripts / Styles

7 scripts · 6 stylesheets

JS / CSS size

473 B · 1.4 KB

Page size

41.7 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 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://centos.org
Final URL: https://centos.org
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 137 ms
HTML size: 41.7 KB
Redirect chain: https://centos.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does centos.org use?: centos.org is built with Bootstrap, Apache.
Is centos.org secure (HTTPS)?: Yes. centos.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 24, 2026.
Who hosts centos.org?: Hosting provider information for centos.org is not available yet.
What is centos.org's SEO score?: centos.org scored 50/100 for SEO in the latest analysis (fair).
What is centos.org's overall website score?: centos.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
Has centos.org's score changed over time?: centos.org's overall score has declined by 1 point (from 82 to 81) since Jul 18, 2026.