What powers cs.fail?
Last seen Jun 2026 · 13 technologies across 9 categories
CDN
Cloudflare
since May 2020
Issue trackers
Sentry
since Nov 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
Performance
Priority Hints
since Sep 2024
Programming languages
TypeScript
since Jul 2021
UI frameworks
Tailwind CSS
since Jul 2024
Webmail
Google Workspace
since Aug 2022
Proton Mail
since Jan 2023
Audience
- 74% desktop
- 26% phone
Ukraine
Germany
Russia
Poland
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.03 / 10 · ranked #3,500,162 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 125 ms |
| CLS | 0.1 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 3.1 MB · 187 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped Crisp Live Chat Jun 2026
- dropped Google Analytics Jun 2026
- dropped Google Tag Manager Jun 2026
- dropped Yandex.Metrika Jun 2026
- dropped Intercom May 2026
- detected Crisp Live Chat Apr 2026
- dropped Hotjar Dec 2025