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Close Browser

Closes the specified browser.

Common Properties​

  • Name - The custom name of the node.
  • Color - The custom color of the node.
  • Delay Before (sec) - Waits in seconds before executing the node.
  • Delay After (sec) - Waits in seconds after executing node.
  • Continue On Error - Automation will continue regardless of any error. The default value is false.
info

If ContinueOnError property is true, no error is caught when the project is executed even if a Catch node is used.

Input​

  • Browser Id - The identifier of the browser to be closed.

Note that using this node ends the browser process completely, the msg.browser_id will be invalid and you will not be able to use Open Link with this msg.browser_id any more or an exception will be thrown.

How It Works​

  1. The node receives the Browser ID and waits for any configured delay before execution
  2. It validates that the Browser ID is not empty
  3. It retrieves the WebDriver instance associated with the Browser ID
  4. The node stops the browser process completely
  5. It cleans up temporary directories created during the browser session
  6. It removes the browser driver instance from the internal registry
  7. The node applies any configured delay after execution

Requirements​

  • A valid Browser ID from the Open Browser node
  • The browser session must still be active and not already closed
  • Proper permissions to terminate browser processes

Error Handling​

Error CodeDescription
Core.Browser.Open.ErrOnCreateConfiguration parsing error during node creation
Core.Browser.Open.ErrOnMessageError parsing incoming message data
Core.Browser.Close.ErrBrowserIdBrowser ID is empty or invalid/not found
Core.Browser.Close.ErrFailed to stop the browser process

Usage Examples​

Example 1: Simple Browser Session Cleanup​

When automating a single task and closing the browser:

1. Use Open Browser to start a browser session (stores browser_id)
2. Perform your automation tasks (navigate, click, extract data, etc.)
3. Use Close Browser with the browser_id to terminate the session
4. Continue with data processing or other non-browser tasks

Example 2: Multiple Browser Sessions​

When working with multiple browsers simultaneously:

1. Use Open Browser to create first session (browser_id_1)
2. Use Open Browser to create second session (browser_id_2)
3. Perform tasks in browser_id_1
4. Use Close Browser with browser_id_1 to close first browser
5. Continue working with browser_id_2
6. Use Close Browser with browser_id_2 when done

Example 3: Error Recovery with Browser Cleanup​

When handling errors in browser automation:

1. Use Try node to wrap your browser automation
2. Perform browser operations
3. In the Catch block:
   - Log the error
   - Use Close Browser to clean up the browser session
   - Prevent resource leaks from abandoned browser instances
4. Continue with error recovery logic

Usage Notes​

  • Close Browser terminates the entire browser process, not just a single tab/window
  • After closing, the Browser ID becomes invalid and cannot be reused
  • All pages, windows, and tabs associated with the browser are closed
  • Temporary files and directories created by the browser session are cleaned up
  • If the browser was already closed or crashed, the node will return an error
  • Use Close Window instead if you only want to close a specific tab/window
  • Closing the browser releases all associated system resources (memory, CPU, etc.)

Tips​

  • Always close browsers when automation is complete to prevent resource leaks
  • Use Try-Catch blocks to ensure browsers are closed even if errors occur
  • Store the Browser ID in a variable at the flow level for easy access
  • For long-running automations, consider closing and reopening browsers periodically
  • Monitor system resources if running multiple browser sessions
  • Close browsers before robot termination to avoid orphaned browser processes
  • Consider using Continue On Error = false to catch closure failures
  • Open Browser - Creates the browser session and Browser ID
  • Close Window - Closes a specific window/tab without terminating the browser
  • Switch Window - Switches between browser windows before closing