go.dev
The Go Programming Language
Last scanned Jul 21, 2026, 11:40 AM · 2 views
Overall score
Great
Top issues to fix
6 issues found
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.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
More than 20% of images are missing alt text
AccessibilityAdd alt attributes to the remaining images (use alt="" for purely decorative ones).
Summary
Go is an open source programming language that makes it simple to build secure, scalable systems. This website uses Google Analytics hosted on Google Cloud. SEO is good (80/100) and accessibility is good (85/100). Security scores good (85/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.
SEO
3 issue(s) found
Performance
362 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Source: https://go.dev/help
Meta tags
- Title
- The Go Programming Language
- Description
- Go is an open source programming language that makes it simple to build secure, scalable systems.
- Canonical
- https://go.dev/
- 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
- Google Cloud
- CDN provider
- —
- IP address
- 216.239.32.21
- ASN
- AS15169 (GOOGLE - Google LLC, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA |
|
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- go.dev
- Valid from
- Jun 1, 2026
- Valid to
- Aug 30, 2026
- Days until expiry
- 39
- SAN domains
- go.dev
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 4
Links
47 internal · 52 external · 0 broken
Images
56 total · 16 missing alt
Scripts / Styles
16 scripts · 2 stylesheets
JS / CSS size
144 KB · 108 KB
Page size
62.7 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
- More than 20% of images are missing alt text
Scan details
- Requested URL
- https://go.dev
- Final URL
- https://go.dev
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 361 ms
- HTML size
- 62.7 KB
- Redirect chain
- https://go.dev
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Frequently asked questions
- What technology does go.dev use?
- go.dev is built with jQuery, Google Analytics.
- Is go.dev secure (HTTPS)?
- Yes. go.dev uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 30, 2026.
- Who hosts go.dev?
- go.dev is hosted on Google Cloud.
- What is go.dev's SEO score?
- go.dev scored 80/100 for SEO in the latest analysis (great).
- What is go.dev's overall website score?
- go.dev has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card