Browser profile configuration in Selenium Python

Introduction

Browser profile configuration lets you customize browser settings before tests run. This helps test real user scenarios like saved passwords or blocked pop-ups.

You want to test how your website behaves with cookies already saved.

You need to disable browser notifications during automated tests.

You want to set a specific language or timezone in the browser for testing.

You want to load browser extensions during testing.

You want to control browser privacy settings like blocking pop-ups.

Syntax

Selenium Python

from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.firefox.firefox_profile import FirefoxProfile

profile = FirefoxProfile()
profile.set_preference('key', 'value')

options = Options()
driver = webdriver.Firefox(firefox_profile=profile, options=options)

Use set_preference to change browser settings before starting the browser.

FirefoxProfile is mainly for Firefox; other browsers have different ways to set profiles.

Examples

Sets the browser homepage to example.com before starting Firefox.

Selenium Python

profile = FirefoxProfile()
profile.set_preference('browser.startup.homepage', 'https://example.com')

Disables web notifications in the browser during tests.

Selenium Python

profile = FirefoxProfile()
profile.set_preference('dom.webnotifications.enabled', False)

Disables JavaScript in the browser to test site behavior without scripts.

Selenium Python

profile = FirefoxProfile()
profile.set_preference('javascript.enabled', False)

Sample Program

This script creates a Firefox profile that sets the homepage and disables notifications. It then opens Firefox with this profile, navigates to about:home, and prints the current URL.

Selenium Python

from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.firefox.firefox_profile import FirefoxProfile

# Create a new Firefox profile
profile = FirefoxProfile()

# Set homepage to example.com
profile.set_preference('browser.startup.homepage', 'https://example.com')

# Disable web notifications
profile.set_preference('dom.webnotifications.enabled', False)

# Prepare Firefox options
options = Options()

# Start Firefox with the custom profile
with webdriver.Firefox(firefox_profile=profile, options=options) as driver:
    driver.get('about:home')
    print('Current URL:', driver.current_url)

Important Notes

Browser profiles help simulate real user settings during tests.

Always close the browser after tests to free resources.

For Chrome or other browsers, profile setup is different; check their docs.

Summary

Browser profile configuration customizes browser settings before tests.

Use set_preference to change settings like homepage or notifications.

This helps test how your site works with different user browser setups.