What powers upstream.ag?
Last seen Jun 2026 · 25 technologies across 15 categories
Analytics
Blogs
CDN
Cloudflare
since Aug 2023
Font scripts
Google Font API
since Apr 2025
Hosting
GoDaddy
since Aug 2023
Issue trackers
Sentry
since Aug 2023
JavaScript frameworks
React
since Apr 2025
JavaScript libraries
Preact
since Aug 2023
Miscellaneous
Performance
Priority Hints
since Apr 2026
Programming languages
Node.js
since Aug 2023
Security
UI frameworks
Tailwind CSS
since Aug 2023
Web frameworks
Webmail
Microsoft 365
since Aug 2023
Audience
- 85% desktop
- 15% phone
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.54 / 10 · ranked #2,426,707 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 3.3 MB · 116 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| upstream.ag | 18 |
| www.upstream.ag | 16 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Headless UI May 2026
- detected Priority Hints Apr 2026
- detected Prism Apr 2026
- detected Tailwind CSS Apr 2026
- dropped Amazon ALB Feb 2026
- dropped Amazon Web Services Feb 2026
- dropped Amazon S3 Nov 2025
- dropped Heroku Nov 2025
- detected Amazon ALB Aug 2025
- detected Heroku Aug 2025