offline (or offline) is an English language term whose literal meaning is "out of line" and it can also qualify something that is turned off or disconnected. It is commonly used to designate that a particular user of the internet or another computer network is not connected to the network.
On social networks, instant chat sites or electronic communication programs, it is very common to see the status of a certain user as "offline", an indication to your network of contacts that is not available for conversations or interactions. Conversely, the term online expresses a state of connectivity and means that the user is visible and can be contacted.
Certain hardware devices, such as modems, printers, or scanners, may also be offline, an indication that a connection is not established between the device and the system.
There are also browsers (browsers) where users can browse offline, and with this functionality pages can be browsed using local copies of pages that have been previously downloaded while in the state.
online. This can be useful when the computer is offline and it is not possible or desirable to connect to the Internet.