What protonmail.ch is built with
Read on 2026-10-28 14:31. 12 technologies spotted.
| Technology | Category | Version | Confidence | Tell |
|---|---|---|---|---|
| Algolia | Search engines | 100% | headers content-security-policy: .proton.me https://*.algolia.net https://*.algolianet.com https://go | |
| Astro | Static site generator, JavaScript frameworks | 100% | dom link[href*='/_astro/'] @href: /_astro/Layout.BsWQlaD0.css | |
| Cloudinary | CDN, Digital asset management | 100% | dom img[src*='.cloudinary.com/'], img[data-src*='.cloudinary.com/'], link[href*='.cloudinary.com/']: <link rel="preconnect" href="https://res.cloudinary.com/"> | |
| HSTS | Security | 100% | headers strict-transport-security: max-age=31536000; includeSubDomains; prel | |
| Headless UI | UI frameworks | 100% | dom button @id: headlessui-menu-button-_r32R_3pkq_ | |
| Let's Encrypt | SSL/TLS certificate authorities | 100% | certIssuer: Let's Encrypt, YR2 | |
| Open Graph | Miscellaneous | 100% | dom meta[property*='og:']: <meta property="og:title" content="Proton Mail: Get a free email account with privacy and encryption | Proton"> | |
| PWA | Miscellaneous | 100% | dom link[rel='manifest']: <link rel="manifest" href="/mail/site.webmanifest" data-manifest-mail> | |
| PayPal | Payment processors | 100% | headers content-security-policy: /proton.me https://*.paypal.com https://*.paypalobjects.com https://gro | |
| Proton Mail | Webmail | 100% | dns MX: mail.protonmail.ch | |
| RSS | Miscellaneous | 100% | dom link[type*='application'] @type: application/rss+xml | |
| Tailwind CSS | UI frameworks | 100% | css: .1)}.dtc-bg-gray-50{--tw-bg-opacity:1;background-color:rgb(249 250 251/var( |
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