Uploading a photo: how is data sent?

TCP/IP is a set of rules about sending and receiving information, meaning your device and the BBC’s can exchange data.

Your information can take a lot of possible routes through the internet, so TCP/IP also guarantees that it arrives complete.

The web server now uses the path in the URL to direct your upload to the BBC Weather Watchers software.

This stores your photo, weather observations, and account details in a structured way, so the BBC Weather Watchers site can access and link it later.

Remember, all of this activity happens in milliseconds!

Find out why the internet breaks sometimes – and it’s not your fault!