This method attaches Playwright to an existing browser instance. When connecting to another browser launched via
BrowserType.launchServer
in Node.js, the major and minor version needs to match the client version (1.2.3 → is
compatible with 1.2.x).
A browser websocket endpoint to connect to.
Optional
options: ConnectOptionsOptional
This method attaches Playwright to an existing browser instance. When connecting to another browser launched via
BrowserType.launchServer
in Node.js, the major and minor version needs to match the client version (1.2.3 → is
compatible with 1.2.x).
This method attaches Playwright to an existing browser instance using the Chrome DevTools Protocol.
The default browser context is accessible via browser.contexts().
NOTE Connecting over the Chrome DevTools Protocol is only supported for Chromium-based browsers.
Usage
const browser = await playwright.chromium.connectOverCDP('http://localhost:9222');
const defaultContext = browser.contexts()[0];
const page = defaultContext.pages()[0];
A CDP websocket endpoint or http url to connect to. For example http://localhost:9222/
or
ws://127.0.0.1:9222/devtools/browser/387adf4c-243f-4051-a181-46798f4a46f4
.
Optional
options: ConnectOverCDPOptionsOptional
This method attaches Playwright to an existing browser instance using the Chrome DevTools Protocol.
The default browser context is accessible via browser.contexts().
NOTE Connecting over the Chrome DevTools Protocol is only supported for Chromium-based browsers.
Usage
const browser = await playwright.chromium.connectOverCDP('http://localhost:9222');
const defaultContext = browser.contexts()[0];
const page = defaultContext.pages()[0];
Returns the browser instance.
Usage
You can use ignoreDefaultArgs
to filter out --mute-audio
from default arguments:
const browser = await chromium.launch({ // Or 'firefox' or 'webkit'.
ignoreDefaultArgs: ['--mute-audio']
});
Chromium-only Playwright can also be used to control the Google Chrome or Microsoft Edge browsers, but it works best with the version of Chromium it is bundled with. There is no guarantee it will work with any other version. Use
executablePath
option with extreme caution.If Google Chrome (rather than Chromium) is preferred, a Chrome Canary or Dev Channel build is suggested.
Stock browsers like Google Chrome and Microsoft Edge are suitable for tests that require proprietary media codecs for video playback. See this article for other differences between Chromium and Chrome. This article describes some differences for Linux users.
Optional
options: LaunchOptionsOptional
Returns the persistent browser context instance.
Launches browser that uses persistent storage located at userDataDir
and returns the only context. Closing this
context will automatically close the browser.
Path to a User Data Directory, which stores browser session data like cookies and local storage. More details for
Chromium and
Firefox. Note that Chromium's
user data directory is the parent directory of the "Profile Path" seen at chrome://version
. Pass an empty
string to use a temporary directory instead.
Optional
options: { Optional
Optional
acceptWhether to automatically download all the attachments. Defaults to true
where all the downloads are accepted.
Optional
args?: string[]NOTE Use custom browser args at your own risk, as some of them may break Playwright functionality.
Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
Optional
baseURL?: stringWhen using page.goto(url[, options]),
page.route(url, handler[, options]),
page.waitForURL(url[, options]),
page.waitForRequest(urlOrPredicate[, options]),
or
page.waitForResponse(urlOrPredicate[, options])
it takes the base URL in consideration by using the
URL()
constructor for building the corresponding URL.
Unset by default. Examples:
http://localhost:3000
and navigating to /bar.html
results in http://localhost:3000/bar.html
http://localhost:3000/foo/
and navigating to ./bar.html
results in
http://localhost:3000/foo/bar.html
http://localhost:3000/foo
(without trailing slash) and navigating to ./bar.html
results in
http://localhost:3000/bar.html
Optional
bypassCSP?: booleanToggles bypassing page's Content-Security-Policy. Defaults to false
.
Optional
channel?: stringBrowser distribution channel. Supported values are "chrome", "chrome-beta", "chrome-dev", "chrome-canary", "msedge", "msedge-beta", "msedge-dev", "msedge-canary". Read more about using Google Chrome and Microsoft Edge.
Optional
chromiumEnable Chromium sandboxing. Defaults to false
.
Optional
colorEmulates 'prefers-colors-scheme'
media feature, supported values are 'light'
, 'dark'
, 'no-preference'
. See
page.emulateMedia([options]) for more details.
Passing null
resets emulation to system defaults. Defaults to 'light'
.
Optional
deviceSpecify device scale factor (can be thought of as dpr). Defaults to 1
. Learn more about
emulating devices with device scale factor.
Optional
devtools?: booleanChromium-only Whether to auto-open a Developer Tools panel for each tab. If this option is true
, the
headless
option will be set false
.
Use debugging tools instead.
Optional
downloadsIf specified, accepted downloads are downloaded into this directory. Otherwise, temporary directory is created and is deleted when browser is closed. In either case, the downloads are deleted when the browser context they were created in is closed.
Optional
env?: { Specify environment variables that will be visible to the browser. Defaults to process.env
.
Optional
executablePath to a browser executable to run instead of the bundled one. If executablePath
is a relative path, then it is
resolved relative to the current working directory. Note that Playwright only works with the bundled Chromium,
Firefox or WebKit, use at your own risk.
Optional
extraHTTPHeaders?: { An object containing additional HTTP headers to be sent with every request. Defaults to none.
Optional
firefoxFirefox user preferences. Learn more about the Firefox user preferences at
about:config
.
Optional
forcedEmulates 'forced-colors'
media feature, supported values are 'active'
, 'none'
. See
page.emulateMedia([options]) for more details.
Passing null
resets emulation to system defaults. Defaults to 'none'
.
Optional
geolocation?: { Optional
accuracy?: numberNon-negative accuracy value. Defaults to 0
.
Latitude between -90 and 90.
Longitude between -180 and 180.
Optional
handleSIGHUP?: booleanClose the browser process on SIGHUP. Defaults to true
.
Optional
handleSIGINT?: booleanClose the browser process on Ctrl-C. Defaults to true
.
Optional
handleSIGTERM?: booleanClose the browser process on SIGTERM. Defaults to true
.
Optional
hasSpecifies if viewport supports touch events. Defaults to false. Learn more about mobile emulation.
Optional
headless?: booleanOptional
httpCredentials for HTTP authentication. If no origin is specified, the username and password are sent to any servers upon unauthorized responses.
Optional
origin?: stringRestrain sending http credentials on specific origin (scheme://host:port).
Optional
ignoreIf true
, Playwright does not pass its own configurations args and only uses the ones from args
. If an array is
given, then filters out the given default arguments. Dangerous option; use with care. Defaults to false
.
Optional
ignoreHTTPSErrors?: booleanWhether to ignore HTTPS errors when sending network requests. Defaults to false
.
Optional
isWhether the meta viewport
tag is taken into account and touch events are enabled. isMobile is a part of device,
so you don't actually need to set it manually. Defaults to false
and is not supported in Firefox. Learn more
about mobile emulation.
Optional
javaWhether or not to enable JavaScript in the context. Defaults to true
. Learn more about
disabling JavaScript.
Optional
locale?: stringSpecify 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. Defaults to the system default
locale. Learn more about emulation in our emulation guide.
Optional
logger?: LoggerLogger sink for Playwright logging.
Optional
offline?: booleanWhether to emulate network being offline. Defaults to false
. Learn more about
network emulation.
Optional
permissions?: string[]A list of permissions to grant to all pages in this context. See browserContext.grantPermissions(permissions[, options]) for more details. Defaults to none.
Optional
proxy?: { Network proxy settings.
Optional
bypass?: stringOptional comma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com"
.
Optional
password?: stringOptional password to use if HTTP proxy requires authentication.
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.
Optional
username?: stringOptional username to use if HTTP proxy requires authentication.
Optional
recordEnables HAR recording for all pages into recordHar.path
file.
If not specified, the HAR is not recorded. Make sure to await
browserContext.close([options]) for
the HAR to be saved.
Optional
content?: "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 or entries in the ZIP archive. If embed
is
specified, content is stored inline the HAR file as per HAR specification. Defaults to attach
for .zip
output
files and to embed
for all other file extensions.
Optional
mode?: "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
.
Optional
omitOptional setting to control whether to omit request content from the HAR. Defaults to false
. Deprecated, use
content
policy instead.
Path on the filesystem to write the HAR file to. If the file name ends with .zip
, content: 'attach'
is used by
default.
Optional
urlA glob or regex pattern to filter requests that are stored in the HAR. When a baseURL
via the context options was
provided and the passed URL is a path, it gets merged via the
new URL()
constructor. Defaults to none.
Optional
recordEnables video recording for all pages into recordVideo.dir
directory. If not specified videos are not recorded.
Make sure to await
browserContext.close([options]) for
videos to be saved.
Path to the directory to put videos into.
Optional
size?: { Optional 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.
Video frame height.
Video frame width.
Optional
reducedEmulates 'prefers-reduced-motion'
media feature, supported values are 'reduce'
, 'no-preference'
. See
page.emulateMedia([options]) for more details.
Passing null
resets emulation to system defaults. Defaults to 'no-preference'
.
Optional
screen?: { Emulates consistent window screen size available inside web page via window.screen
. Is only used when the
viewport
is set.
page height in pixels.
page width in pixels.
Optional
serviceWhether 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.Optional
slowSlows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on.
Optional
strictIf set to true, 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. This
option does not affect any Locator APIs (Locators are always strict). Defaults to false
. See Locator to
learn more about the strict mode.
Optional
timeout?: numberMaximum time in milliseconds to wait for the browser instance to start. Defaults to 30000
(30 seconds). Pass 0
to disable timeout.
Optional
timezoneChanges the timezone of the context. See ICU's metaZones.txt for a list of supported timezone IDs. Defaults to the system timezone.
Optional
tracesIf specified, traces are saved into this directory.
Optional
userSpecific user agent to use in this context.
Optional
videoUse recordVideo
instead.
Video frame height.
Video frame width.
Optional
videosUse recordVideo
instead.
Optional
viewport?: { Emulates consistent viewport for each page. Defaults to an 1280x720 viewport. Use null
to disable the consistent
viewport emulation. Learn more about viewport emulation.
NOTE The null
value opts out from the default presets, makes viewport depend on the host window size defined
by the operating system. It makes the execution of the tests non-deterministic.
page height in pixels.
page width in pixels.
Returns the browser app instance. You can connect to it via browserType.connect(wsEndpoint[, options]), which requires the major/minor client/server version to match (1.2.3 → is compatible with 1.2.x).
Usage
Launches browser server that client can connect to. An example of launching a browser executable and connecting to it later:
const { chromium } = require('playwright'); // Or 'webkit' or 'firefox'.
(async () => {
const browserServer = await chromium.launchServer();
const wsEndpoint = browserServer.wsEndpoint();
// Use web socket endpoint later to establish a connection.
const browser = await chromium.connect(wsEndpoint);
// Close browser instance.
await browserServer.close();
})();
Optional
options: { Optional
Optional
args?: string[]NOTE Use custom browser args at your own risk, as some of them may break Playwright functionality.
Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
Optional
channel?: stringBrowser distribution channel. Supported values are "chrome", "chrome-beta", "chrome-dev", "chrome-canary", "msedge", "msedge-beta", "msedge-dev", "msedge-canary". Read more about using Google Chrome and Microsoft Edge.
Optional
chromiumEnable Chromium sandboxing. Defaults to false
.
Optional
devtools?: booleanChromium-only Whether to auto-open a Developer Tools panel for each tab. If this option is true
, the
headless
option will be set false
.
Use debugging tools instead.
Optional
downloadsIf specified, accepted downloads are downloaded into this directory. Otherwise, temporary directory is created and is deleted when browser is closed. In either case, the downloads are deleted when the browser context they were created in is closed.
Optional
env?: { Specify environment variables that will be visible to the browser. Defaults to process.env
.
Optional
executablePath to a browser executable to run instead of the bundled one. If executablePath
is a relative path, then it is
resolved relative to the current working directory. Note that Playwright only works with the bundled Chromium,
Firefox or WebKit, use at your own risk.
Optional
firefoxFirefox user preferences. Learn more about the Firefox user preferences at
about:config
.
Optional
handleSIGHUP?: booleanClose the browser process on SIGHUP. Defaults to true
.
Optional
handleSIGINT?: booleanClose the browser process on Ctrl-C. Defaults to true
.
Optional
handleSIGTERM?: booleanClose the browser process on SIGTERM. Defaults to true
.
Optional
headless?: booleanOptional
ignoreIf true
, Playwright does not pass its own configurations args and only uses the ones from args
. If an array is
given, then filters out the given default arguments. Dangerous option; use with care. Defaults to false
.
Optional
logger?: LoggerLogger sink for Playwright logging.
Optional
port?: numberPort to use for the web socket. Defaults to 0 that picks any available port.
Optional
proxy?: { Network proxy settings.
Optional
bypass?: stringOptional comma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com"
.
Optional
password?: stringOptional password to use if HTTP proxy requires authentication.
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.
Optional
username?: stringOptional username to use if HTTP proxy requires authentication.
Optional
timeout?: numberMaximum time in milliseconds to wait for the browser instance to start. Defaults to 30000
(30 seconds). Pass 0
to disable timeout.
Optional
tracesIf specified, traces are saved into this directory.
Optional
wsPath at which to serve the Browser Server. For security, this defaults to an unguessable string.
NOTE Any process or web page (including those running in Playwright) with knowledge of the wsPath
can take
control of the OS user. For this reason, you should use an unguessable token when using this option.
Generated using TypeDoc
BrowserType provides methods to launch a specific browser instance or connect to an existing one. The following is a typical example of using Playwright to drive automation: