Skip to main content

Browser

  • extends: [EventEmitter]

A Browser is created via BrowserType.LaunchAsync(options). An example of using a Browser to create a Page:

using Microsoft.Playwright;

using var playwright = await Playwright.CreateAsync();
var firefox = playwright.Firefox;
var browser = await firefox.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });
var page = await browser.NewPageAsync();
await page.GotoAsync("https://www.bing.com");
await browser.CloseAsync();

event Browser.Disconnected

Added in: v1.8

Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:

Browser.BrowserType

Added in: v1.23

Get the browser type (chromium, firefox or webkit) that the browser belongs to.

Browser.CloseAsync()

Added in: v1.8

In case this browser is obtained using BrowserType.LaunchAsync(options), closes the browser and all of its pages (if any were opened).

In case this browser is connected to, clears all created contexts belonging to this browser and disconnects from the browser server.

note

This is similar to force quitting the browser. Therefore, you should call BrowserContext.CloseAsync() on any BrowserContext's you explicitly created earlier with Browser.NewContextAsync(options) before calling Browser.CloseAsync().

The Browser object itself is considered to be disposed and cannot be used anymore.

Browser.Contexts

Added in: v1.8

Returns an array of all open browser contexts. In a newly created browser, this will return zero browser contexts.

using var playwright = await Playwright.CreateAsync();
var browser = await playwright.Webkit.LaunchAsync();
System.Console.WriteLine(browser.Contexts.Count); // prints "0"
var context = await browser.NewContextAsync();
System.Console.WriteLine(browser.Contexts.Count); // prints "1"

Browser.IsConnected

Added in: v1.8

Indicates that the browser is connected.

Browser.NewContextAsync(options)

Added in: v1.8
  • options <BrowserNewContextOptions?>

    • AcceptDownloads <bool?> Whether to automatically download all the attachments. Defaults to true where all the downloads are accepted.#

    • BaseURL <string?> When using Page.GotoAsync(url, options), Page.RouteAsync(url, handler, options), Page.WaitForURLAsync(url, options), Page.RunAndWaitForRequestAsync(action, urlOrPredicate, options), or Page.RunAndWaitForResponseAsync(action, urlOrPredicate, options) it takes the base URL in consideration by using the URL() constructor for building the corresponding URL. Examples:#

      • baseURL: http://localhost:3000 and navigating to /bar.html results in http://localhost:3000/bar.html
      • baseURL: http://localhost:3000/foo/ and navigating to ./bar.html results in http://localhost:3000/foo/bar.html
      • baseURL: http://localhost:3000/foo (without trailing slash) and navigating to ./bar.html results in http://localhost:3000/bar.html
    • BypassCSP <bool?> Toggles bypassing page's Content-Security-Policy.#

    • ColorScheme <enum ColorScheme { Light, Dark, NoPreference, Null }?> Emulates 'prefers-colors-scheme' media feature, supported values are 'light', 'dark', 'no-preference'. See Page.EmulateMediaAsync(options) for more details. Passing 'null' resets emulation to system defaults. Defaults to 'light'.#

    • DeviceScaleFactor <double?> Specify device scale factor (can be thought of as dpr). Defaults to 1.#

    • ExtraHTTPHeaders <IDictionary?<string, string>> An object containing additional HTTP headers to be sent with every request.#

    • ForcedColors <enum ForcedColors { Active, None, Null }?> Emulates 'forced-colors' media feature, supported values are 'active', 'none'. See Page.EmulateMediaAsync(options) for more details. Passing 'null' resets emulation to system defaults. Defaults to 'none'.#

    • Geolocation <Geolocation?>#

      • Latitude <double> Latitude between -90 and 90.
      • Longitude <double> Longitude between -180 and 180.
      • Accuracy <double?> Non-negative accuracy value. Defaults to 0.
    • HasTouch <bool?> Specifies if viewport supports touch events. Defaults to false.#

    • HttpCredentials <HttpCredentials?> Credentials for HTTP authentication.#

    • IgnoreHTTPSErrors <bool?> Whether to ignore HTTPS errors when sending network requests. Defaults to false.#

    • IsMobile <bool?> Whether the meta viewport tag is taken into account and touch events are enabled. Defaults to false. Not supported in Firefox.#

    • JavaScriptEnabled <bool?> Whether or not to enable JavaScript in the context. Defaults to true.#

    • Locale <string?> Specify user locale, for example en-GB, de-DE, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting rules.#

    • Offline <bool?> Whether to emulate network being offline. Defaults to false.#

    • Permissions <IEnumerable?<string>> A list of permissions to grant to all pages in this context. See BrowserContext.GrantPermissionsAsync(permissions, options) for more details.#

    • Proxy <Proxy?> Network proxy settings to use with this context.#

      • Server <string> Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example http://myproxy.com:3128 or socks5://myproxy.com:3128. Short form myproxy.com:3128 is considered an HTTP proxy.
      • Bypass <string?> Optional comma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com".
      • Username <string?> Optional username to use if HTTP proxy requires authentication.
      • Password <string?> Optional password to use if HTTP proxy requires authentication.

      note

      For Chromium on Windows the browser needs to be launched with the global proxy for this option to work. If all contexts override the proxy, global proxy will be never used and can be any string, for example launch({ proxy: { server: 'http://per-context' } }).

    • RecordHarContent <enum HarContentPolicy { Omit, Embed, Attach }?> Optional setting to control resource content management. If omit is specified, content is not persisted. If attach is specified, resources are persisted as separate files and all of these files are archived along with the HAR file. Defaults to embed, which stores content inline the HAR file as per HAR specification.#

    • RecordHarMode <enum HarMode { Full, Minimal }?> When set to minimal, only record information necessary for routing from HAR. This omits sizes, timing, page, cookies, security and other types of HAR information that are not used when replaying from HAR. Defaults to full.#

    • RecordHarOmitContent <bool?> Optional setting to control whether to omit request content from the HAR. Defaults to false.#

    • RecordHarPath <string?> Enables HAR recording for all pages into the specified HAR file on the filesystem. If not specified, the HAR is not recorded. Make sure to call BrowserContext.CloseAsync() for the HAR to be saved.#

    • RecordHarUrlFilter|RecordHarUrlFilterRegex <string?|Regex?>#

    • RecordVideoDir <string?> Enables video recording for all pages into the specified directory. If not specified videos are not recorded. Make sure to call BrowserContext.CloseAsync() for videos to be saved.#

    • RecordVideoSize <RecordVideoSize?> Dimensions of the recorded videos. If not specified the size will be equal to viewport scaled down to fit into 800x800. If viewport is not configured explicitly the video size defaults to 800x450. Actual picture of each page will be scaled down if necessary to fit the specified size.#

      • Width <int> Video frame width.
      • Height <int> Video frame height.
    • ReducedMotion <enum ReducedMotion { Reduce, NoPreference, Null }?> Emulates 'prefers-reduced-motion' media feature, supported values are 'reduce', 'no-preference'. See Page.EmulateMediaAsync(options) for more details. Passing 'null' resets emulation to system defaults. Defaults to 'no-preference'.#

    • ScreenSize <ScreenSize?> Emulates consistent window screen size available inside web page via window.screen. Is only used when the viewport is set.#

      • Width <int> page width in pixels.
      • Height <int> page height in pixels.
    • ServiceWorkers <enum ServiceWorkerPolicy { Allow, Block }?> Whether to allow sites to register Service workers. Defaults to 'allow'.#

      • 'allow': Service Workers can be registered.
      • 'block': Playwright will block all registration of Service Workers.
    • StorageState <string?> Populates context with given storage state. This option can be used to initialize context with logged-in information obtained via BrowserContext.StorageStateAsync(options).#

    • StorageStatePath <string?> Populates context with given storage state. This option can be used to initialize context with logged-in information obtained via BrowserContext.StorageStateAsync(options). Path to the file with saved storage state. Added in: v1.9#

    • StrictSelectors <bool?> If specified, enables strict selectors mode for this context. In the strict selectors mode all operations on selectors that imply single target DOM element will throw when more than one element matches the selector. See Locator to learn more about the strict mode.#

    • TimezoneId <string?> Changes the timezone of the context. See ICU's metaZones.txt for a list of supported timezone IDs.#

    • UserAgent <string?> Specific user agent to use in this context.#

    • ViewportSize <ViewportSize?> Emulates consistent viewport for each page. Defaults to an 1280x720 viewport. Use ViewportSize.NoViewport to disable the default viewport.#

      • Width <int> page width in pixels.
      • Height <int> page height in pixels.
  • returns: <BrowserContext>#

Creates a new browser context. It won't share cookies/cache with other browser contexts.

note

If directly using this method to create BrowserContexts, it is best practice to explicitly close the returned context via BrowserContext.CloseAsync() when your code is done with the BrowserContext, and before calling Browser.CloseAsync(). This will ensure the context is closed gracefully and any artifacts—like HARs and videos—are fully flushed and saved.

using var playwright = await Playwright.CreateAsync();
var browser = await playwright.Firefox.LaunchAsync();
// Create a new incognito browser context.
var context = await browser.NewContextAsync();
// Create a new page in a pristine context.
var page = await context.NewPageAsync(); ;
await page.GotoAsync("https://www.bing.com");

// Gracefully close up everything
await context.CloseAsync();
await browser.CloseAsync();

Browser.NewPageAsync(options)

Added in: v1.8
  • options <BrowserNewPageOptions?>

    • AcceptDownloads <bool?> Whether to automatically download all the attachments. Defaults to true where all the downloads are accepted.#

    • BaseURL <string?> When using Page.GotoAsync(url, options), Page.RouteAsync(url, handler, options), Page.WaitForURLAsync(url, options), Page.RunAndWaitForRequestAsync(action, urlOrPredicate, options), or Page.RunAndWaitForResponseAsync(action, urlOrPredicate, options) it takes the base URL in consideration by using the URL() constructor for building the corresponding URL. Examples:#

      • baseURL: http://localhost:3000 and navigating to /bar.html results in http://localhost:3000/bar.html
      • baseURL: http://localhost:3000/foo/ and navigating to ./bar.html results in http://localhost:3000/foo/bar.html
      • baseURL: http://localhost:3000/foo (without trailing slash) and navigating to ./bar.html results in http://localhost:3000/bar.html
    • BypassCSP <bool?> Toggles bypassing page's Content-Security-Policy.#

    • ColorScheme <enum ColorScheme { Light, Dark, NoPreference, Null }?> Emulates 'prefers-colors-scheme' media feature, supported values are 'light', 'dark', 'no-preference'. See Page.EmulateMediaAsync(options) for more details. Passing 'null' resets emulation to system defaults. Defaults to 'light'.#

    • DeviceScaleFactor <double?> Specify device scale factor (can be thought of as dpr). Defaults to 1.#

    • ExtraHTTPHeaders <IDictionary?<string, string>> An object containing additional HTTP headers to be sent with every request.#

    • ForcedColors <enum ForcedColors { Active, None, Null }?> Emulates 'forced-colors' media feature, supported values are 'active', 'none'. See Page.EmulateMediaAsync(options) for more details. Passing 'null' resets emulation to system defaults. Defaults to 'none'.#

    • Geolocation <Geolocation?>#

      • Latitude <double> Latitude between -90 and 90.
      • Longitude <double> Longitude between -180 and 180.
      • Accuracy <double?> Non-negative accuracy value. Defaults to 0.
    • HasTouch <bool?> Specifies if viewport supports touch events. Defaults to false.#

    • HttpCredentials <HttpCredentials?> Credentials for HTTP authentication.#

    • IgnoreHTTPSErrors <bool?> Whether to ignore HTTPS errors when sending network requests. Defaults to false.#

    • IsMobile <bool?> Whether the meta viewport tag is taken into account and touch events are enabled. Defaults to false. Not supported in Firefox.#

    • JavaScriptEnabled <bool?> Whether or not to enable JavaScript in the context. Defaults to true.#

    • Locale <string?> Specify user locale, for example en-GB, de-DE, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting rules.#

    • Offline <bool?> Whether to emulate network being offline. Defaults to false.#

    • Permissions <IEnumerable?<string>> A list of permissions to grant to all pages in this context. See BrowserContext.GrantPermissionsAsync(permissions, options) for more details.#

    • Proxy <Proxy?> Network proxy settings to use with this context.#

      • Server <string> Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example http://myproxy.com:3128 or socks5://myproxy.com:3128. Short form myproxy.com:3128 is considered an HTTP proxy.
      • Bypass <string?> Optional comma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com".
      • Username <string?> Optional username to use if HTTP proxy requires authentication.
      • Password <string?> Optional password to use if HTTP proxy requires authentication.

      note

      For Chromium on Windows the browser needs to be launched with the global proxy for this option to work. If all contexts override the proxy, global proxy will be never used and can be any string, for example launch({ proxy: { server: 'http://per-context' } }).

    • RecordHarContent <enum HarContentPolicy { Omit, Embed, Attach }?> Optional setting to control resource content management. If omit is specified, content is not persisted. If attach is specified, resources are persisted as separate files and all of these files are archived along with the HAR file. Defaults to embed, which stores content inline the HAR file as per HAR specification.#

    • RecordHarMode <enum HarMode { Full, Minimal }?> When set to minimal, only record information necessary for routing from HAR. This omits sizes, timing, page, cookies, security and other types of HAR information that are not used when replaying from HAR. Defaults to full.#

    • RecordHarOmitContent <bool?> Optional setting to control whether to omit request content from the HAR. Defaults to false.#

    • RecordHarPath <string?> Enables HAR recording for all pages into the specified HAR file on the filesystem. If not specified, the HAR is not recorded. Make sure to call BrowserContext.CloseAsync() for the HAR to be saved.#

    • RecordHarUrlFilter|RecordHarUrlFilterRegex <string?|Regex?>#

    • RecordVideoDir <string?> Enables video recording for all pages into the specified directory. If not specified videos are not recorded. Make sure to call BrowserContext.CloseAsync() for videos to be saved.#

    • RecordVideoSize <RecordVideoSize?> Dimensions of the recorded videos. If not specified the size will be equal to viewport scaled down to fit into 800x800. If viewport is not configured explicitly the video size defaults to 800x450. Actual picture of each page will be scaled down if necessary to fit the specified size.#

      • Width <int> Video frame width.
      • Height <int> Video frame height.
    • ReducedMotion <enum ReducedMotion { Reduce, NoPreference, Null }?> Emulates 'prefers-reduced-motion' media feature, supported values are 'reduce', 'no-preference'. See Page.EmulateMediaAsync(options) for more details. Passing 'null' resets emulation to system defaults. Defaults to 'no-preference'.#

    • ScreenSize <ScreenSize?> Emulates consistent window screen size available inside web page via window.screen. Is only used when the viewport is set.#

      • Width <int> page width in pixels.
      • Height <int> page height in pixels.
    • ServiceWorkers <enum ServiceWorkerPolicy { Allow, Block }?> Whether to allow sites to register Service workers. Defaults to 'allow'.#

      • 'allow': Service Workers can be registered.
      • 'block': Playwright will block all registration of Service Workers.
    • StorageState <string?> Populates context with given storage state. This option can be used to initialize context with logged-in information obtained via BrowserContext.StorageStateAsync(options).#

    • StorageStatePath <string?> Populates context with given storage state. This option can be used to initialize context with logged-in information obtained via BrowserContext.StorageStateAsync(options). Path to the file with saved storage state. Added in: v1.9#

    • StrictSelectors <bool?> If specified, enables strict selectors mode for this context. In the strict selectors mode all operations on selectors that imply single target DOM element will throw when more than one element matches the selector. See Locator to learn more about the strict mode.#

    • TimezoneId <string?> Changes the timezone of the context. See ICU's metaZones.txt for a list of supported timezone IDs.#

    • UserAgent <string?> Specific user agent to use in this context.#

    • ViewportSize <ViewportSize?> Emulates consistent viewport for each page. Defaults to an 1280x720 viewport. Use ViewportSize.NoViewport to disable the default viewport.#

      • Width <int> page width in pixels.
      • Height <int> page height in pixels.
  • returns: <Page>#

Creates a new page in a new browser context. Closing this page will close the context as well.

This is a convenience API that should only be used for the single-page scenarios and short snippets. Production code and testing frameworks should explicitly create Browser.NewContextAsync(options) followed by the BrowserContext.NewPageAsync() to control their exact life times.

Browser.Version

Added in: v1.8

Returns the browser version.