What powers coverletter.co?
Last seen Jun 2026 · 31 technologies across 18 categories
Accessibility
Advertising
Microsoft Advertising
since Mar 2025
Analytics
Amplitude
since Nov 2025
Google Analytics
since Jul 2024
CDN
cdnjs
since Jul 2024
Cloudflare
since Jul 2024
Databases
Firebase
since Jul 2024
Issue trackers
Help Scout
since Oct 2024
Sentry
since Jul 2024
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Vercel
since Jul 2024
Programming languages
Reverse proxies
Envoy
since Mar 2025
Security
Tag managers
Google Tag Manager
since Jul 2024
UI frameworks
Headless UI
since Jul 2024
Web frameworks
Play
since Sep 2024
Web servers
Caddy
since Mar 2025
Webmail
Google Workspace
since Jul 2024
Audience
- 69% phone
- 31% desktop
United States
Canada
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.44 / 10 · ranked #30,413,562 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 1.2 MB · 78 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| coverletter.co | 18 |
| builder.coverletter.co | 16 |
| help.coverletter.co | 11 |
Full technology history →
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Recent changes
- dropped Hotjar Feb 2026
- dropped Klaviyo Jan 2026
- dropped Swiper Dec 2025
- detected Amplitude Nov 2025
- detected React Router Oct 2025
- dropped Priority Hints Aug 2025