slack.dev
Developer Hub | Slack Developers
Last scanned Jul 27, 2026, 1:43 PM
Overall score
Great
Summary
Build context-aware AI apps and agents with Slack, the work operating system. This website uses WordPress hosted on AUTOMATTIC - Automattic, Inc, US. SEO is excellent (95/100) and accessibility is excellent (95/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Multiple H1 headings found.
Build context-aware AI apps and agents with Slack, the work operating system. Get tools, documentation, community, and learning resources for developers.
- United States
- Hosted on AUTOMATTIC - Automattic, Inc, US
Top issues to fix
7 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
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.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
+1 more issue — details in the sections below.
SEO
1 issue(s) found
Performance
7 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Developer Hub | Slack Developers
- Description
- Build context-aware AI apps and agents with Slack, the work operating system. Get tools, documentation, community, and learning resources for developers.
- Canonical
- https://slack.dev/
- Language
- en-US
- Charset
- UTF-8
- Viewport
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
- Manifest
- https://slack.dev/wp-content/themes/octothorpe-theme/public/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AUTOMATTIC - Automattic, Inc, US
- CDN provider
- —
- IP address
- 192.0.66.150
- ASN
- AS2635 (AUTOMATTIC - Automattic, Inc, US)
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
- slack.dev
- Valid from
- Jul 6, 2026
- Valid to
- Oct 4, 2026
- Days until expiry
- 69
- SAN domains
- slack.dev, www.slack.dev
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 2 · H2 7 · H3 25
Links
24 internal · 37 external · 1 broken
Images
30 total · 0 missing alt
Scripts / Styles
14 scripts · 1 stylesheets
JS / CSS size
318 KB · 232 KB
Page size
106 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Multiple H1 headings found
Accessibility issues
- Missing viewport meta tag
Scan details
- Requested URL
- https://slack.dev
- Final URL
- https://slack.dev
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 5 ms
- HTML size
- 106 KB
- Redirect chain
- https://slack.dev
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does slack.dev use?
- slack.dev is built with WordPress, Google Analytics, Nginx.
- Is slack.dev secure (HTTPS)?
- Yes. slack.dev uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 4, 2026.
- Who hosts slack.dev?
- slack.dev is hosted on AUTOMATTIC - Automattic, Inc, US.
- What is slack.dev's SEO score?
- slack.dev scored 95/100 for SEO in the latest analysis (excellent).
- What is slack.dev's overall website score?
- slack.dev has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card