erlang.org
Index - Erlang/OTP
Last scanned Aug 3, 2026, 4:00 AM · 8 views
Overall score
Excellent
Summary
The official home of the Erlang Programming Language. This website uses Bootstrap behind Netlify CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing canonical link.
The official home of the Erlang Programming Language
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 canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
17 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
196 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+4 overall since Jul 26, 2026
- Overall
- 93
- SEO
- 85
- Security
- 90
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
The official home of the Erlang Programming Language
Meta tags
- Title
- Index - Erlang/OTP
- Description
- The official home of the Erlang Programming Language
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Netlify
- 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.erlang.org
- Valid from
- Jul 13, 2026
- Valid to
- Oct 11, 2026
- Days until expiry
- 69
- SAN domains
- beta.erlang.org, blog.erlang.org, bugs.erlang.org, www.erlang.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 3
Links
15 internal · 2 external · 17 broken
Images
2 total · 0 missing alt
Scripts / Styles
5 scripts · 1 stylesheets
JS / CSS size
2.7 KB · 0 B
Page size
26.5 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://erlang.org
- Final URL
- https://www.erlang.org/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 196 ms
- HTML size
- 26.5 KB
- Redirect chain
- https://erlang.org → https://www.erlang.org/
See something wrong on this report? Request a correction
Related websites
Same technology stack
html.design
800+ Free HTML Templates & Themes | html.design
ip2whois.com
Free WHOIS - Domain WHOIS Lookup | IP2WHOIS.com
hianime.ms
Hianime - Watch Anime Online Free in HD Sub & Dub
hostux.net
Hostux Network – Privacy-Focused & Open-Source Tools
datcom.com.au
Datcom Cloud: Managed IT & Cybersecurity Services Sydney
myhealthbox.eu
myHealthbox - The medicines and healthcare products database
Frequently asked questions
- What technology does erlang.org use?
- erlang.org is built with Bootstrap.
- Is erlang.org secure (HTTPS)?
- Yes. erlang.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 11, 2026.
- Who hosts erlang.org?
- Hosting provider information for erlang.org is not available yet.
- What is erlang.org's SEO score?
- erlang.org scored 85/100 for SEO in the latest analysis (great).
- What is erlang.org's overall website score?
- erlang.org has an overall SiteGraph score of 93/100, combining SEO, performance, security, and accessibility.
- Has erlang.org's score changed over time?
- erlang.org's overall score has improved by 4 points (from 89 to 93) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card