Croxync

The gap between two devices.

A useful link on a computer shouldn’t require an email to yourself to reach your phone. Croxync joins a Chrome extension and a progressive web app around a shared clipboard.

The extension captures copied text, selected text, links, and page URLs. The web app keeps those clips available from another browser or an installed home-screen app.

One code, a shared collection.

A six-character sync code connects devices without an email-and-password registration flow. The dashboard organizes clips into links, code, notes, lists, and other content.

QR pairing, session history, copy-back actions, and deletion are implemented in the dashboard. The presentation above recreates that interface with fictional clips; it is not a screenshot of someone’s clipboard.

Two clients. One application API.

The Manifest V3 extension uses a service worker, content script, and popup. It shares the Next.js application API with the PWA. Clips and device groups are modeled with Prisma; the current schema uses PostgreSQL.

The dashboard refreshes every five seconds. This is periodic synchronization, not a WebSocket system. The sync code is a lightweight access model, and the repository lists end-to-end encryption as future work.

A smaller handoff.

The implemented workflow covers capture, organization, and retrieval across devices. The public source remains available; this case study can be explored without a public deployment.