How Free Voice and Video Calls Work Right in Your Browser
You can start a video call from a web page with no app and no plugin. The technology behind it is called WebRTC.
What is WebRTC?
WebRTC (Web Real-Time Communication) is a set of standards built into modern browsers. It lets two devices exchange audio, video and data directly. Chrome, Edge, Firefox and Safari all support it.
The steps of a call
- Permission. Your browser asks to use the microphone and camera. Nothing is sent until you allow it.
- Signaling. The two browsers swap small setup messages describing what each can send and receive. A chat service carries these messages, but not the call itself.
- Finding a route. Most devices sit behind routers. A STUN server helps each browser learn its public address so they can find a path to each other.
- Direct connection. Once a path is found, audio and video flow peer to peer, encrypted by default.
Why calls are free
Because media goes directly between users, the service does not need to relay or process the stream. That removes the biggest cost of traditional calling and is why browser calls need no minutes or credit.
What affects quality
- Your connection: upload speed matters as much as download speed for video.
- Wi-Fi strength: move closer to the router or switch to mobile data if a call stutters.
- Device load: close heavy tabs and apps.
- Strict networks: some corporate or mobile networks block direct connections, and calls may fail without a relay server.
Privacy notes
In a direct call, the other participant can technically see your network address. Only call people you trust, and use headphones to prevent echo. Calls are not recorded by Thingwethink.
To try it, open any chat in Thingwethink and tap the phone or camera icon.