Pricing
Free to look. Pro to understand.
Free
$0
Forever. No account needed.
- Every technology on every page, by category
- Open-source browser extension, runs locally
- Lookups on howitsbuilt.fyi (20 new sites per day)
Pro
$4.99/month
7-day free trial · card required · cancel anytime
- Versions, confidence and the evidence behind every match
- Export as JSON or CSV
- Pro details in the extension popup
- Soon: hosting, DNS and mail providers, tracking IDs, multi-page scans
Billed monthly after the trial. Cancel in one click.
| Feature | Free | Pro |
|---|---|---|
| Technologies with name, icon and category | ● | ● |
| Versions, confidence and the evidence behind every match | — | ● |
| Hosting, ASN, CDN, DNS and mail providers, SPF/DMARC, TLS issuer | — | Soon |
| Tracking IDs: GA4, GTM, Meta Pixel, Hotjar, Segment, PostHog | — | Soon |
| Multi-page scan (up to 5 internal pages) | — | Soon |
| JavaScript rendering for single-page apps | — | Soon |
| Security header scorecard | — | Soon |
| Export as JSON or CSV | — | ● |