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SGSiteGraph

freertos.org

FreeRTOS™ - FreeRTOS™

Last scanned Aug 24, 2026, 1:22 PM

78

Overall score

Fair

Summary

This website uses Gatsby hosted on AWS behind CloudFront CDN. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance fair (55/100). Top issue: Missing meta description.

United States
Hosted on AWS

Top issues to fix

6 issues found · 1 high priority

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 1 broken link on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

65

SEO

5 issue(s) found

55

Performance

31 ms

100

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.

GitHubYouTubeX (Twitter)

Meta tags

Title
FreeRTOS™ - FreeRTOS™
Description
Canonical
Language
en-us
Charset
UTF-8
Viewport
width=device-width, initial-scale=1, shrink-to-fit=no
Robots meta
Manifest
https://freertos.org/manifest.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
FreeRTOS™ - FreeRTOS™
og:description
—
og:type
—
og:url
https://freertos.org

Twitter Card

twitter:card
summary
twitter:title
FreeRTOS™ - FreeRTOS™
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Gatsby

Hosting & CDN

Hosting provider
AWS
CDN provider
CloudFront
IP address
13.227.249.95
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 13.227.249.95
  • 13.227.249.38
  • 13.227.249.58
  • 13.227.249.53
AAAA—
MX
  • mx-vh.clara.net
TXT
  • google-site-verification=dGRUFFMS5gYpComd5dImIHrZKqj-BPi38q3ByjOeAuk
  • v=spf1 include:spf-claramail.mail.eu.clara.net ~all
NS
  • ns-1114.awsdns-11.org
  • ns-824.awsdns-39.net
  • ns-212.awsdns-26.com
  • ns-1563.awsdns-03.co.uk
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Amazon
Subject
freertos.org
Valid from
Jun 24, 2026
Valid to
Jan 7, 2027
Days until expiry
136
SAN domains
freertos.org, *.freertos.org

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 16 · H3 15

Links

26 internal · 15 external · 1 broken

Images

27 total · 0 missing alt

Scripts / Styles

14 scripts · 0 stylesheets

JS / CSS size

2.6 MB · 441 KB

Page size

1.2 MB

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
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://freertos.org
Final URL
https://freertos.org
HTTP status
200
HTTP version
HTTP/2
Response time
7 ms
HTML size
1.2 MB
Redirect chain
https://freertos.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does freertos.org use?
freertos.org is built with Gatsby.
Is freertos.org secure (HTTPS)?
Yes. freertos.org uses TLS 1.3 with a certificate issued by Amazon, valid until Jan 7, 2027.
Who hosts freertos.org?
freertos.org is hosted on AWS, behind CloudFront CDN.
What is freertos.org's SEO score?
freertos.org scored 65/100 for SEO in the latest analysis (fair).
What is freertos.org's overall website score?
freertos.org has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.