What technology does r-project.org use?

r-project.org is built with Bootstrap, jQuery, Apache.

Is r-project.org secure (HTTPS)?

Yes. r-project.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Jan 16, 2027.

What is r-project.org's SEO score?

r-project.org scored 60/100 for SEO in the latest analysis (fair).

What is r-project.org's overall website score?

r-project.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.

r-project.org

R: The R Project for Statistical Computing

Last scanned Jul 21, 2026, 12:13 PM · 1 view

Overall score

Fair

Top issues to fix

10 issues found · 3 high priority

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.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.

+4 more issues — details in the sections below.

Summary

This website uses Apache hosted on UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT. SEO is fair (60/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

SEO

6 issue(s) found

100

Performance

283 ms

Security

HTTPS & header checks

100

Accessibility

0 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.

Organization

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

Contact

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

Email: webmaster@r-project.org

Technologies

Detected frameworks, languages, and tools.

Bootstrap jQuery Apache

Hosting & CDN

Hosting provider: UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT
CDN provider: —
IP address: 137.208.57.37
ASN: AS1776 (UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT)

DNS records

Type	Value
A	137.208.57.37
AAAA	—
MX	cran.wu-wien.ac.at
TXT	—
NS	—
CAA	—
CNAME	cran.wu-wien.ac.at
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Sectigo Limited
Subject: *.r-project.org
Valid from: Dec 16, 2025
Valid to: Jan 16, 2027
Days until expiry: 179
SAN domains: *.r-project.org, r-project.org

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 1 · H2 10 · H3 0

Links

20 internal · 16 external · 0 broken

Images

1 total · 0 missing alt

Scripts / Styles

5 scripts · 4 stylesheets

JS / CSS size

143 KB · 118 KB

Page size

6.3 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

Scan details

Requested URL: https://r-project.org
Final URL: https://www.r-project.org/
HTTP status: 200
HTTP version: HTTP/2
Response time: 283 ms
HTML size: 6.3 KB
Redirect chain: https://r-project.org → https://www.r-project.org/

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Frequently asked questions

What technology does r-project.org use?: r-project.org is built with Bootstrap, jQuery, Apache.
Is r-project.org secure (HTTPS)?: Yes. r-project.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Jan 16, 2027.
Who hosts r-project.org?: r-project.org is hosted on UNSPECIFIED - WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business, AT.
What is r-project.org's SEO score?: r-project.org scored 60/100 for SEO in the latest analysis (fair).
What is r-project.org's overall website score?: r-project.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.