fsf.org

Live check Visit ↗

fsf.org is ranked #5,958 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), up 112 places in four weeks. The domain was registered on Feb 1, 1991, 35 years, 8 months ago, through Gandi SAS, and is paid up until Feb 2, 2027. Its homepage uses Matomo. It is served by Nginx.

Global rank

#5,958

▼ 13 this week

Domain age

35 years

since Feb 1, 1991

Technologies

detected on the homepage

SEO score

67/100

homepage checks

Popularity rank

#5,958 of the top 1 million sites in the Tranco research ranking, which averages several traffic and DNS sources over 30 days. Best rank in the period shown: #5,945.

Weekly Tranco rank (lower is more popular).

See where fsf.org sits in the top 10,000

Domain registration

Registered: Feb 1, 1991 (35 years, 8 months ago)
Expires: Feb 2, 2027
Registrar: Gandi SAS
Name servers: ns4.gnu.org, ns1.gnu.org, ns2.gnu.org
DNSSEC: Not signed

From the registry's public RDAP record, checked Oct 7, 2026.

Technology stack

Analytics

Matomo

Web servers

Nginx

Detected from the homepage HTML and response headers on Oct 14, 2026. Tools loaded only after scripts run (or after consent banners) may be missing.

Homepage SEO check

Checked from the HTML our scanner received on Oct 14, 2026. Content added later by JavaScript isn't counted.

67/100

https://www.fsf.org/

Front Page — Free Software Foundation — working together for free software

(no meta description)

11 passed · 9 warnings · 3 failed

Content

!Title74 characters — aim for 15–65
✕Meta descriptionMissing
✕H1 headingMissing in the served HTML
✓Subheadings17 H2 headings
!Image alt text1 of 20 images have no alt text
✓Content lengthAbout 1,106 words

Indexing

✓IndexableNo noindex directive
!Canonical URLMissing
✓robots.txtFound
✓XML sitemapFound
✓Language attributeen
✓Structured dataOrganization, NGO, WebSite, WebPage, ItemList, Project, DataCatalog, EventSeries

Social sharing

✕Open GraphMissing
!Twitter / X cardMissing

Technical

✓HTTPSServed over HTTPS
✓Mobile viewportFound
!FaviconMissing
✓Character encodingutf-8

Security headers

!Strict-Transport-SecurityNot set
!Content-Security-PolicyNot set
!Clickjacking protectionNot set
✓X-Content-Type-OptionsSet
!Referrer-PolicyNot set

Server response

Final URL: https://www.fsf.org/
HTTP status: 200
Server: nginx
Response time: 136 ms (first byte 114 ms, from our scanner in a US data centre)
HTML size: 63 KB
Compression: gzip

Sites ranked near fsf.org

Rank	Website	Registered	Built with
#5,953	amazonsilk.com	2011	Amazon CloudFront
#5,954	loggly.com	2009	Akamai
#5,955	pair.com	1995	WordPress, cdnjs, Cloudflare
#5,956	giga.de	—	Amazon CloudFront, Nginx, Google Tag Manager
#5,957	userapi.dev	2026	—
#5,959	google.hu	—	—
#5,960	appfolio.com	2006	Nuxt, Vue.js, Google Tag Manager
#5,961	huaweicloud.com	2010	jQuery
#5,962	mediamarkt.de	—	Cloudflare
#5,963	hollisterco.com	2002	—

Questions about fsf.org

How popular is fsf.org?

fsf.org is #5,958 worldwide in the Tranco list published Oct 13, 2026.

How old is fsf.org?

fsf.org was registered on Feb 1, 1991, which makes the domain 35 years, 8 months old.

What is fsf.org built with?

We detected Matomo and Nginx on its homepage.

Who is the registrar of fsf.org?

Gandi SAS, according to the registry's RDAP record.