Dunmao Tech Hub

Oct 30, 2025 · Frontend Development

How to Build a WebRTC Voice Call App with PeerJS: Step‑by‑Step Guide

This guide walks through setting up a PeerJS‑based P2P voice call system, covering browser compatibility, Node environment preparation, installing and running the peerjs‑server (via npm or Docker), initializing the Peer object, handling connections, making and receiving calls, and customizing Peer IDs, with full code snippets and screenshots.