What powers postcard.inc?
Last seen Apr 2026 · 19 technologies across 12 categories
Analytics
Google Analytics
since Mar 2022
Vercel Analytics
since Jan 2026
Development
Turbopack
since Jan 2026
Issue trackers
Sentry
since Mar 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Vercel
since Mar 2022
Performance
Priority Hints
since Mar 2025
Programming languages
Security
HSTS
since Sep 2022
UI frameworks
Tailwind CSS
since Feb 2023
Webmail
Google Workspace
since Aug 2022
Audience
- 64% phone
- 35% desktop
- 2% tablet
United States
India
Japan
Germany
United Kingdom
France
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.21 / 10 · ranked #1,256,347 of all domains
53 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped Cloudflare Jan 2026
- detected Turbopack Jan 2026
- detected Vercel Analytics Jan 2026
- dropped styled-components Sep 2025