posthog.com
PostHog – We make your product self-driving
Last scanned Jul 18, 2026, 8:49 PM
Overall score
Fair
Top issues to fix
7 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.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
More than 20% of images are missing alt text
AccessibilityAdd alt attributes to the remaining images (use alt="" for purely decorative ones).
+1 more issue — details in the sections below.
Summary
PostHog automatically diagnoses problems, fixes bugs, and generates pull requests – all without you having to prompt it. This website uses Gatsby hosted on AWS behind Vercel CDN. SEO is good (85/100) and accessibility is good (75/100). Security scores good (75/100) and performance poor (40/100). Top issue: Multiple H1 headings found.
SEO
2 issue(s) found
Performance
49 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Contact
Email, phone, and address published on this site's own pages.
- sales@posthog.com
Source: https://posthog.com/contact
Meta tags
- Title
- PostHog – We make your product self-driving
- Description
- PostHog automatically diagnoses problems, fixes bugs, and generates pull requests – all without you having to prompt it.
- Canonical
- https://posthog.com/
- Language
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- Manifest
- https://posthog.com/manifest.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
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
- posthog.com
- Valid from
- Jul 14, 2026
- Valid to
- Oct 12, 2026
- Days until expiry
- 85
- SAN domains
- posthog.com
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 2 · H2 9 · H3 1
Links
50 internal · 1 external · 0 broken
Images
13 total · 6 missing alt
Scripts / Styles
22 scripts · 0 stylesheets
JS / CSS size
8.8 MB · 588 KB
Page size
1.4 MB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 4
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Multiple H1 headings found
- No structured data (JSON-LD) found
Accessibility issues
- More than 20% of images are missing alt text
- Missing <html lang> attribute
Products & pricing
Product and pricing information published in this site's own structured data.
PostHog Web
$5 USD
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://posthog.com
- Final URL
- https://posthog.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 21 ms
- HTML size
- 1.4 MB
- Redirect chain
- https://posthog.com
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Frequently asked questions
- What technology does posthog.com use?
- posthog.com is built with Gatsby.
- Is posthog.com secure (HTTPS)?
- Yes. posthog.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 12, 2026.
- Who hosts posthog.com?
- posthog.com is hosted on AWS, behind Vercel CDN.
- What is posthog.com's SEO score?
- posthog.com scored 85/100 for SEO in the latest analysis (great).
- What is posthog.com's overall website score?
- posthog.com has an overall SiteGraph score of 69/100, combining SEO, performance, security, and accessibility.
- What products does posthog.com offer?
- posthog.com offers PostHog Web.
- Is posthog.com hiring?
- posthog.com has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card