Filter (internet)

A filter is a website feature that removes some kinds of content. This can be to stop the user viewing the unwanted content. It can also be to stop the user posting content the site does not want. Internet filters most often work by stopping certain words being used. Filters to stop other content, such as certain kinds of pictures, can also be used. A filter can be used to only stop a certain kind of user seeing the content, children for example.

Where filters are used

Filters are very common in e-mail systems. Online games, usually children's games, sometimes have filters. Wikis have filters, too.

In the US, there is a filter used with TV called the V-chip. Sometimes parents use it when they want to control what their children are allowed to watch.

Things filtered

The items that a filter might be used to remove can include:

• Swear words
• Pictures about Pornography
• Threats
• Violence
• A certain topic, religion for example