gnuradio.org
GNU Radio
Last scanned Jul 26, 2026, 5:17 AM · 1 view
Overall score
Fair
Summary
This website uses Nginx. SEO is fair (55/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (80/100). Top issue: Missing meta description.
Top issues to fix
10 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Slow estimated load (8.2s)
PerformanceUse a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+4 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
8.22 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- GNU Radio
- Description
- Canonical
- Language
- en-us
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- all,follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
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
- gnuradio.org
- Valid from
- Jun 13, 2026
- Valid to
- Sep 11, 2026
- Days until expiry
- 46
- SAN domains
- gnuradio.org, tutorials.gnuradio.org, www.gnuradio.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 3 · H2 2 · H3 3
Links
10 internal · 22 external · 11 broken
Images
8 total · 1 missing alt
Scripts / Styles
8 scripts · 9 stylesheets
JS / CSS size
109 KB · 288 KB
Page size
12.9 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
- Multiple H1 headings found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://gnuradio.org
- Final URL
- https://www.gnuradio.org/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 8.22 s
- HTML size
- 12.9 KB
- Redirect chain
- https://gnuradio.org → https://www.gnuradio.org/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does gnuradio.org use?
- gnuradio.org is built with Bootstrap, jQuery, Nginx.
- Is gnuradio.org secure (HTTPS)?
- Yes. gnuradio.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 11, 2026.
- Who hosts gnuradio.org?
- Hosting provider information for gnuradio.org is not available yet.
- What is gnuradio.org's SEO score?
- gnuradio.org scored 55/100 for SEO in the latest analysis (fair).
- What is gnuradio.org's overall website score?
- gnuradio.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card