🛡️ Welcome to Posto

Posto is a privacy-first blogging web service built to empower users without compromising their data. Unlike most platforms, Posto only requires a unique username and password — no email address, no phone number, and no personal identifiers that could be used against you later. Posto is also proudly open source. Every line of code is publicly available on GitHub (click the app icon on the bottom of page). I believe transparency is essential when building software, and users deserve to know exactly what their tools are doing. Whether you're journaling private thoughts or publishing your voice to the world, Posto puts you in full control — securely and on your terms. --- 🌐 Key Features 🔓 Public + Private Posts • Create, edit, and delete posts with complete control. • Mark posts as public to share them on your profile. • Keep posts private — fully encrypted and unreadable by anyone else, including the server. 💬 Comments, Likes, and Social Interactions • Public posts can be liked and commented on by other users. • Follow others to build a personalized home feed of authors you care about. 🔐 End-to-End Encryption with Zero-Knowledge Architecture Posto uses per-user end-to-end encryption powered by a zero-knowledge model. When you create a private post: • A unique encryption key is derived at login using credentials only you know. • That key is stored only in memory during your session — never written to disk, never shared. • Even if the server or database is compromised, your private content remains secure — not even Posto admins (hi 👋) can decrypt it. --- For those interested in the internals, my next blog post will be: Posto: A Technical Analysis