julialang.org
The Julia Programming Language
Last scanned Jul 26, 2026, 5:17 AM · 1 view
Overall score
Excellent
Summary
Julia is a high-level, high-performance, dynamic programming language for technical computing. This website uses Plausible Analytics hosted on Fastly behind Fastly CDN. SEO is excellent (95/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.
The Julia Programming Language
Julia is a high-level, high-performance, dynamic programming language for technical computing.
- United States
- Hosted on Fastly
Top issues to fix
5 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.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
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
229 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
The Julia Programming Language
Julia is a high-level, high-performance, dynamic programming language for technical computing.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- The Julia Programming Language
- Description
- The official website for the Julia Language. Julia is a language that is fast, dynamic, easy to use, and open source. Click here to learn more.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- GlobalSign nv-sa
- Subject
- julialang.org
- Valid from
- Sep 19, 2025
- Valid to
- Oct 21, 2026
- Days until expiry
- 87
- SAN domains
- julialang.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 7 · H3 15
Links
36 internal · 122 external · 1 broken
Images
29 total · 0 missing alt
Scripts / Styles
11 scripts · 6 stylesheets
JS / CSS size
154 KB · 271 KB
Page size
59.7 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 251
SEO issues
- Missing canonical link
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://julialang.org
- Final URL
- https://julialang.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 228 ms
- HTML size
- 59.7 KB
- Redirect chain
- https://julialang.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does julialang.org use?
- julialang.org is built with Bootstrap, Plausible Analytics.
- Is julialang.org secure (HTTPS)?
- Yes. julialang.org uses TLS 1.2 with a certificate issued by GlobalSign nv-sa, valid until Oct 21, 2026.
- Who hosts julialang.org?
- julialang.org is hosted on Fastly, behind Fastly CDN.
- What is julialang.org's SEO score?
- julialang.org scored 95/100 for SEO in the latest analysis (excellent).
- What is julialang.org's overall website score?
- julialang.org has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
- What company operates julialang.org?
- julialang.org is operated by The Julia Programming Language. Julia is a high-level, high-performance, dynamic programming language for technical computing.
OpenGraph & Twitter Card
OpenGraph
Twitter Card