rtems.org
The RTEMS Project home
Last scanned Aug 24, 2026, 1:23 PM
Overall score
Fair
Summary
The RTEMS Project home. This website uses Apache. SEO is fair (70/100) and accessibility is fair (60/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.
The RTEMS Project home
Top issues to fix
10 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
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
5 issue(s) found
Performance
489 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
The RTEMS Project home
Meta tags
- Title
- The RTEMS Project home
- Description
- The RTEMS Project home
- Canonical
- Language
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1,maximum-scale=5
- Robots meta
- 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
- www.rtems.org
- Valid from
- Aug 15, 2026
- Valid to
- Nov 13, 2026
- Days until expiry
- 79
- SAN domains
- www.rtems.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 2 · H2 2 · H3 9
Links
9 internal · 19 external · 2 broken
Images
1 total · 1 missing alt
Scripts / Styles
6 scripts · 2 stylesheets
JS / CSS size
560 B · 0 B
Page size
24.5 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
- Missing <html lang> attribute
Scan details
- Requested URL
- https://rtems.org
- Final URL
- https://www.rtems.org/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 489 ms
- HTML size
- 24.5 KB
- Redirect chain
- https://rtems.org → https://www.rtems.org/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does rtems.org use?
- rtems.org is built with Apache.
- Is rtems.org secure (HTTPS)?
- Yes. rtems.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 13, 2026.
- Who hosts rtems.org?
- Hosting provider information for rtems.org is not available yet.
- What is rtems.org's SEO score?
- rtems.org scored 70/100 for SEO in the latest analysis (fair).
- What is rtems.org's overall website score?
- rtems.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card