Parameter description

‘manifest_version’ specifies the version of the manifest; the value must be 2. ‘name’ specifies the name of the extension. ‘description’ specifies a short description of the extension. ‘version’ specifies the version of the extension. ‘background’ specifies that script ‘background.js’ loads as soon as the user starts the Opera browser. ‘icons’ specifies the location of the icons or images, which we are going to use in our extension. ‘permission’ specifies which Opera extension APIs are to be used. We are using contextMenus and tabs.