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random.org

RANDOM.ORG - True Random Number Service

Last scanned Aug 1, 2026, 2:00 PM · 5 views

88

Overall score

Great

Summary

RANDOM.ORG offers true random numbers to anyone on the Internet. This website uses Cloudflare Analytics behind Cloudflare CDN. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

Top issues to fix

9 issues found

  • 2 cookies without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • 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.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • robots.txt not found

    SEO

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

+3 more issues — details in the sections below.

65

SEO

6 issue(s) found

100

Performance

146 ms

100

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-1 overall since Jul 25, 2026

Overall
88
SEO
65
Security
100
Performance
100
Accessibility
90

Organization

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

RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

X (Twitter)

Meta tags

Title
RANDOM.ORG - True Random Number Service
Description
RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.
Canonical
Language
Charset
utf-8
Viewport
width=device-width
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQueryCloudflare Analytics

Hosting & CDN

Hosting provider
—
CDN provider
Cloudflare
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Gandi SAS
Subject
*.random.org
Valid from
Jan 22, 2026
Valid to
Feb 22, 2027
Days until expiry
205
SAN domains
*.random.org, random.org

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 8

Links

75 internal · 8 external · 20 broken

Images

3 total · 0 missing alt

Scripts / Styles

5 scripts · 1 stylesheets

JS / CSS size

1.2 KB · 775 B

Page size

23.4 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Meta description longer than 160 characters
  • Missing canonical link
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Missing <html lang> attribute

Scan details

Requested URL
https://random.org
Final URL
https://www.random.org/
HTTP status
200
HTTP version
HTTP/2
Response time
146 ms
HTML size
23.4 KB
Redirect chain
https://random.org → https://www.random.org/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does random.org use?
random.org is built with jQuery, Cloudflare Analytics.
Is random.org secure (HTTPS)?
Yes. random.org uses TLS 1.3 with a certificate issued by Gandi SAS, valid until Feb 22, 2027.
Who hosts random.org?
Hosting provider information for random.org is not available yet.
What is random.org's SEO score?
random.org scored 65/100 for SEO in the latest analysis (fair).
What is random.org's overall website score?
random.org has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
Has random.org's score changed over time?
random.org's overall score has declined by 1 point (from 89 to 88) since Jul 25, 2026.