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fsf.org

https://fsf.org· First analyzed 12 Feb 2026· Updated 12 Feb 2026
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fsf.org
Desktop screenshot of fsf.org
Mobile screenshot of fsf.org
Mobile

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Hosting Provider

IP Address

209.51.188.174

Server Location

🇺🇸 Biddeford, United States

ASN

AS22989

Organization

Hurricane Electric LLC

Server

Nginx

CDN

CDN

Nameservers

ns1.gnu.org.ns4.gnu.org.ns2.gnu.org.

Performance

Page Speed

52 KB
25 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Hurricane Electric LLC
CDN
CDN

Technology Stack

3 Technologies Detected

CSS Frameworks

1

Analytics

1

Web Servers

1

SEO Analysis

F35/100
6
6
2
F
fsf.orgfsf.org

Front Page — Free Software Foundation — working together for free s...

No description available for this page.

Title truncated.
Title Length74 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • Missing meta description - important for click-through rates
  • Missing H1 tag - every page should have one H1

Crawlability

Sitemap

Type: standard

212 URLs

robots.txt

100 rules

Sitemap reference found

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F

Security Score

31%Critical
Interactive

HTTPS

No WAF

59d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.0

Valid From

12.01.2026

Valid Until

12.04.2026

Subject Alternative Names (5)

*.fsf.org*.member.fsf.org*.members.fsf.org*.office.fsf.orgfsf.org

SHA-256 Fingerprint

34:5B:85:4C:B5:57:AB:FE:2B:D7:93:2E:7F:D6:B3:BD:60:C0:C2:FD...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

age
171
cache-control
🟡 0s(max-age=0, s-maxage=86400, must-revalidate)
connection
keep-alive
content-language
en
content-length
58276
content-type
text/html;charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.fsf.org

Domain Information

fsf.org

Domain Age
35 years

Created

01.02.1991

Expires

02.02.2027

Last Updated

09.12.2025

Registrar

Gandi SAS

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

Typography & Readability

sans-serif

33/100
Readability
/30
20/40

13px · LH 1.50

Hierarchy
/20
8/25
WCAG
/25
5/15

Contrast: undefined

Performance
/25
20/20

System fonts

Heading Font

sans-serif

Sans

Body Font

sans-serif

Sans13px

Contrast Ratio

--

Reading Comfort

~44 CPL

Needs attention
14px
h2
15px
h3
14px
h4
13px
p
Minor Second
Scale

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Cramped layout: 36 elements lack adequate spacing.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

4 Resources

1
Scripts
3
Styles
1
Async
0
Defer

Top Script Sources

piwik.fsf.org(1)

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Last analyzed: 12 Feb 2026 at 13:44

Historical Analysis & Change Tracking