WhatsApp Web Automation Using Selenium

This repository provides a Python script that automates sending WhatsApp messages via WhatsApp Web, using Selenium and webdriver-manager. It opens WhatsApp Web in a persistent Chrome session, allowing you to send predefined messages to any phone number in international format, without scanning a QR code each time.

Features

• Uses an existing Chrome user profile to avoid repeated QR logins.
• Automatically handles the “Continue to Chat” button for new contacts.
• Sends messages to a specified phone number.
• Simple and straightforward Python code.

Prerequisites

• Python 3.7+ installed
• Google Chrome browser installed
• A Chrome user profile that’s already logged into WhatsApp Web

Installation

1. Clone or download this repository.
2. Open a terminal (or command prompt) in the project directory.
3. Install dependencies:

   pip install selenium webdriver-manager

4. Locate your Chrome user data folder. On Windows, it’s usually:

   C:\Users\[YourUser]\AppData\Local\Google\Chrome\User Data\Default

   Update the path in the script if needed.
5. Make sure your Chrome version matches the ChromeDriver installed by webdriver-manager (this is usually handled automatically).

Usage

Open the Whatsapp_automated.py (or similar) file and adjust the following line to your own profile path:

CHROME_PROFILE_PATH = r"C:\Users\rokas\AppData\Local\Google\Chrome\User Data\Default"

Then, specify a valid phone number in international format (without +), and your desired message:

# Example usage at the bottom of the file:
if __name__ == "__main__":
    test_number = "44XXXXXXXXXX"  # Replace with a valid phone number
    test_message = "Hello!"       # Replace with your message
    send_whatsapp_message(test_number, test_message)

Run the script:

python Whatsapp_automated.py

Notes

• The first time you run this script with a new Chrome user profile, WhatsApp Web may require you to scan the QR code. Once scanned, you remain logged in.
• For new contacts, WhatsApp shows a “Continue to Chat” link. The script attempts to click it automatically.
• If you encounter NoSuchElementException, it may be because WhatsApp Web’s UI changed. Update the XPaths or CSS selectors accordingly.
• Be mindful of WhatsApp’s terms of service and spam policies. Use responsibly.

Source Code

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from webdriver_manager.chrome import ChromeDriverManager
import urllib.parse
import time
Path to Chrome profile for selenium to use

CHROME_PROFILE_PATH = r"C:\Users\rokas\AppData\Local\Google\Chrome\User Data\Default" # Replace with your path
def send_whatsapp_message(phone_number, message):
# Open Chrome and navigate to WhatsApp Web
options = webdriver.ChromeOptions()
options.add_argument(f"user-data-dir={CHROME_PROFILE_PATH}")
driver = webdriver.Chrome(service=Service(ChromeDriverManager().install()), options=options)

try:
    # Make the WhatsApp URL with the phone number and message
    encoded_message = urllib.parse.quote(message)
    whatsapp_url = f"https://web.whatsapp.com/send?phone={{phone_number}}&text={{encoded_message}}"
    
    driver.get(whatsapp_url)
    
    # Wait for the 'Continue to Chat' button to appear if the contact is new and click it
    wait = WebDriverWait(driver, 10)
    time.sleep(3)  # Pause to let the page load

    try:
        continue_button = wait.until(
            EC.element_to_be_clickable((
                By.XPATH,
                "//a[contains(@href, 'web.whatsapp.com/send?phone=')]"
            ))
        )
        continue_button.click()
        time.sleep(5)  # let the chat load
    except:
        # If 'Continue to Chat' button does not appear, it's likely an existing contact
        pass
    
    # Find the Send button (data-icon='send') and click it
    send_button = wait.until(
        EC.element_to_be_clickable((By.XPATH, "//span[@data-icon='send']"))
    )
    send_button.click() # Click the send button
    
    print(f"Message sent to {{phone_number}}!")
    time.sleep(3)
    
except Exception as e:
    print(f"Error sending message to {{phone_number}}: {{e}}")
finally:
    driver.quit() # Close the browser window

Test the function

if name == "main":
test_number = "44XXXXXXXXXX"  # Replace with a valid phone number
test_message = "Hello!" # Replace with your message
send_whatsapp_message(test_number, test_message)

License

This project is provided “as is” without warranty of any kind. Use at your own risk and ensure you adhere to WhatsApp’s policies.

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Happy Messaging!