What powers postfa.st?
Last seen Aug 2026 · 22 technologies across 12 categories
Affiliate programs
Analytics
Cloudflare Browser Insights
since Dec 2025
Google Analytics
since Apr 2025
CDN
Cloudflare
since Apr 2025
Development
Turbopack
since Apr 2026
Sendgrid
since Dec 2025
Issue trackers
Sentry
since Mar 2026
JavaScript frameworks
Next.js App Router
since Apr 2025
React
since Apr 2025
JavaScript libraries
Miscellaneous
Performance
Priority Hints
since Apr 2025
Programming languages
Node.js
since Apr 2025
UI frameworks
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt found
- llms-full.txt found
- ai.txt not found
- Sep 2026 *: Allowed (was Restricted)
- Aug 2026 *: Restricted (was Allowed)
AI Crawlers
No AI crawlers blocked
Standards: llms.txt, llms-full.txt
Audience
- 57% phone
- 41% desktop
- 1% tablet
India
Brazil
United Kingdom
United States
Australia
Indonesia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.88 / 10 · ranked #670,589 of all domains
105 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.6 MB · 64 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| postfa.st | 18 |
| app.postfa.st | 14 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Clickbank Aug 2026
- detected Rewardful Aug 2026
- dropped Apollo May 2026
- dropped GraphQL May 2026
- dropped TypeScript May 2026
- detected Turbopack Apr 2026
- dropped Microsoft Clarity Feb 2026