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When a browser is launched, it has a single BrowserContext used by default. The method ",(0,a.kt)("a",{parentName:"p",href:"/api/puppeteer.browser.newpage"},"Browser.newPage")," creates a page in the default browser context."),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Signature:")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-typescript"},"export declare class BrowserContext extends EventEmitter\n")),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Extends:")," ",(0,a.kt)("a",{parentName:"p",href:"/api/puppeteer.eventemitter"},"EventEmitter")),(0,a.kt)("h2",{id:"remarks"},"Remarks"),(0,a.kt)("p",null,"The Browser class extends from Puppeteer's ",(0,a.kt)("a",{parentName:"p",href:"/api/puppeteer.eventemitter"},"EventEmitter")," class and will emit various events which are documented in the ",(0,a.kt)("a",{parentName:"p",href:"/api/puppeteer.browsercontextemittedevents"},"BrowserContextEmittedEvents")," enum."),(0,a.kt)("p",null,"If a page opens another page, e.g. with a ",(0,a.kt)("inlineCode",{parentName:"p"},"window.open")," call, the popup will belong to the parent page's browser context."),(0,a.kt)("p",null,'Puppeteer allows creation of "incognito" browser contexts with ',(0,a.kt)("a",{parentName:"p",href:"/api/puppeteer.browser.createincognitobrowsercontext"},"Browser.createIncognitoBrowserContext"),' method. 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All the targets that belong to the browser context will be closed.")),(0,a.kt)("tr",{parentName:"tbody"},(0,a.kt)("td",{parentName:"tr",align:null},(0,a.kt)("a",{parentName:"td",href:"/api/puppeteer.browsercontext.isincognito"},"isIncognito()")),(0,a.kt)("td",{parentName:"tr",align:null}),(0,a.kt)("td",{parentName:"tr",align:null},"Returns whether BrowserContext is incognito. 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