brilliant.org
Brilliant | Learn by doing
Last scanned Jul 26, 2026, 5:17 AM · 2 views
Overall score
Great
Summary
Guided interactive problem solving that’s effective and fun. This website uses Next.js hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance fair (65/100). Top issue: No structured data (JSON-LD) found.
Guided interactive problem solving that’s effective and fun. Try thousands of interactive lessons in math, programming, data analysis, AI, science, and more.
- United States
- Hosted on Cloudflare
Top issues to fix
4 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
1 broken link on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
1 issue(s) found
Performance
1.08 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Guided interactive problem solving that’s effective and fun. Try thousands of interactive lessons in math, programming, data analysis, AI, science, and more.
Contact
Email, phone, and address published on this site's own pages.
Source: https://brilliant.org/help
Meta tags
- Title
- Brilliant | Learn by doing
- Description
- Guided interactive problem solving that’s effective and fun. Try thousands of interactive lessons in math, programming, data analysis, AI, science, and more.
- Canonical
- https://brilliant.org/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1.0,viewport-fit=cover,interactive-widget=resizes-content
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.18.9.15
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT | — |
| NS |
|
| CAA |
|
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- brilliant.org
- Valid from
- Jul 18, 2026
- Valid to
- Oct 16, 2026
- Days until expiry
- 82
- SAN domains
- *.brilliant.org, *.endor.brilliant.org, *.preview.brilliant.org, brilliant.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 13
Links
12 internal · 11 external · 1 broken
Images
22 total · 0 missing alt
Scripts / Styles
36 scripts · 2 stylesheets
JS / CSS size
2.2 MB · 1.0 MB
Page size
259 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 30
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://brilliant.org
- Final URL
- https://brilliant.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.07 s
- HTML size
- 259 KB
- Redirect chain
- https://brilliant.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does brilliant.org use?
- brilliant.org is built with Next.js, Google Analytics.
- Is brilliant.org secure (HTTPS)?
- Yes. brilliant.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 16, 2026.
- Who hosts brilliant.org?
- brilliant.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is brilliant.org's SEO score?
- brilliant.org scored 90/100 for SEO in the latest analysis (excellent).
- What is brilliant.org's overall website score?
- brilliant.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Is brilliant.org hiring?
- brilliant.org has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card