Last updated: 2026-09-07
Web Serial Terminal is a static, serverless web app. There is no backend and no account: everything below is a complete description of where data goes.
All communication with your connected device happens locally through the browser's Web Serial API. Data received from or sent to a serial port never leaves your browser and is never transmitted to this site, its author, or any server.
The app saves a few preferences directly on your device using localStorage (theme, terminal mode, macros, and similar settings) and caches static assets with a Service Worker so it keeps working offline. None of this is readable by the site owner or sent anywhere.
The page itself is loaded from GitHub Pages and Cloudflare (custom domain), and pulls a few static assets from third parties, each governed by its own policy:
Questions? Open an issue on GitHub.