WhatsChecker

🕵️‍♂️ A powerful multi-threaded CLI tool to check WhatsApp number validity via WhatsApp Web.

🌟 Features

• ✅ Detect Active/Inactive WhatsApp Numbers
• 🧠 Intelligent Login Handling (QR scan and session reuse)
• 🔀 Concurrent Multi-Account Checking
• 🛡️ Proxy Support (optional, per account)
• 🗃️ Persistent Profiles – saves WhatsApp login sessions
• 🕶️ Headless Mode – optional
• 🕓 Customizable Delays – mimic human-like behavior
• 📂 Custom Config Support (whatschecker.config.json)
• 📈 Built with Selenium + Undetected ChromeDriver
• 💥 Auto dependency installs on first run
• 📇 Extracts valid WhatsApp numbers from saved contacts on the device

🚀 Usage

1. 📦 Installation

git clone https://github.com/bitbytelab/WhatsChecker.git
cd WhatsChecker
chmod +x whatschecker.py

2. 🧪 First-time Setup (Scan QR)

./whatschecker.py --add-account

Scan the QR code to save your WhatsApp session. You can add multiple accounts this way.

3. 📤 Checking Numbers

Prepare an input file (e.g., numbers.txt) with one number per line:

+12025550123
+447911123456
+8801711123456

Run the checker:

./whatschecker.py --input numbers.txt --valid active.txt --invalid inactive.txt

You can also run in headless mode:

./whatschecker.py --input numbers.txt --valid active.txt --invalid inactive.txt --headless

4. 📇 Contacts Extraction

To extract valid WhatsApp numbers from your saved contacts:

python -m whatschecker --input contacts

This will:

1. Launch WhatsApp Web and log you in.
2. Open the "New Chat" sidebar to access all device contacts.
3. Incrementally scroll through the list and extract each visible contact.
4. Save valid WhatsApp numbers along with name, about, and avatar info to a CSV.

The generated CSV will be saved as:

valid_whatsapp_contacts_YYYY_mm_dd_HH_MM.csv

📁 Example output preview:

📝 Note: Contact names must be saved as numbers (i.e., "017xxxxxxx") to work properly with this feature.

5. 🧩 Optional Arguments

6. ⚙️ Config File Support

You can also define your settings in a whatschecker.config.json file:

{
  "input": "numbers.txt",
  "valid": "active.txt",
  "invalid": "inactive.txt",
  "delay": 8,
  "proxies": ["http://127.0.0.1:8000", null]
}

Then just run:

./whatschecker.py

🔐 Session Management

Saved WhatsApp sessions are stored in:

./Profiles/account1
./Profiles/account2
...

Remove a folder to reset that session.

🧰 Dependencies

• Python 3.9+
• undetected-chromedriver
• selenium

📦 Auto-installs on first run if not found!

❓ FAQ

Q: Will my WhatsApp account get banned?
A: This script mimics human behavior using real browser sessions and delays. Use proxies and multiple accounts to reduce risk. No API violations.

Q: Is this open source?
A: Yes! MIT licensed. Use it responsibly and contribute back.

👨‍💻 Author

Made with ❤️ by BitByteLab
📧 Contact: bbytelab@gmail.com

📄 License

MIT License – see LICENSE file for details.

⭐️ Star this project

If you find this useful, please consider starring the repo!
👉 github.com/bitbytelab/WhatsChecker