How do I prepare my number list?

Prepare a text file named numbers-need-to-be-checked.txt in the same folder as the software. The file should contain: One phone number per line Numbers in international format (e.g., +971501234567) No spaces or special characters The software will automatically detect and process this file.

The software won't start or crashes immediately

This is usually caused by security software blocking the application. Try these solutions: Add the software folder to your antivirus exclusion list Ensure you have the latest version of Google Chrome installed Run the software as Administrator (right-click > Run as administrator) Make sure all files are in the same directory and not modified

QR code won't scan or connection fails

If you're having trouble with the QR code: Ensure your phone has an active internet connection Try refreshing the QR code page in the browser window Make sure you're scanning with the same WhatsApp account you want to use for verification Check that your phone's date and time match your computer's Restart both your computer and phone if issues persist

Numbers aren't being checked properly

If numbers aren't verifying correctly: Verify your input file is named exactly numbers-need-to-be-checked.txt Ensure each number is on its own line in international format (e.g., +971501234567) Check that your internet connection is stable Make sure WhatsApp Web is properly connected (green dot in the interface) Try with a small test file (5-10 numbers) to confirm functionality

Getting "Invalid license key" error

If you receive an invalid license key message: Double-check that you've entered your license key exactly as provided If you've recently purchased, wait a few minutes and try again as license propagation can take 2-3 minutes Ensure your computer has internet access for license validation Contact support if the problem persists with your purchase details

Software is running very slowly

For better performance: Close other applications to free up system resources For large lists (10,000+ numbers), consider running on a VPS Ensure you have at least 4GB of RAM available Use a wired internet connection instead of WiFi for stability Verify that Google Chrome is up to date

FAQ - WhatsApp Number Checker

Q: Where are the results saved?

Valid WhatsApp numbers are saved to valid-whatsapp-numbers.txt in the same folder as the software. This file is automatically created during the verification process. Each valid number is saved on a new line in the same international format as your input file.

General Questions

WhatsApp Number Checker is a professional Windows software that allows you to verify WhatsApp numbers in bulk. It checks which phone numbers in your list have WhatsApp accounts, saving you time and improving your communication efficiency.

The software connects to WhatsApp servers through your local internet connection and checks each number in your list. It identifies which numbers are registered with WhatsApp and saves the valid numbers to a separate file on your computer.

No technical expertise is required. Our software is designed with a user-friendly interface. We also provide step-by-step video tutorials to guide you through the setup and verification process.

Prepare a text file named numbers-need-to-be-checked.txt in the same folder as the software. The file should contain:

One phone number per line
Numbers in international format (e.g., +971501234567)
No spaces or special characters

The software will automatically detect and process this file.

Valid WhatsApp numbers are saved to valid-whatsapp-numbers.txt in the same folder as the software. This file is automatically created during the verification process.

Each valid number is saved on a new line in the same international format as your input file.

After purchasing the software, you'll receive a unique license key. When you first run the software, you'll be prompted to enter this key.

The software validates your key with our secure license server. Once validated, you can use the software without restrictions.

License keys are valid for lifetime use on a single computer.

Key Features

Discover the powerful capabilities of WhatsApp Number Checker

Bulk Verification

Process thousands of numbers quickly with our optimized verification algorithm.

Local Processing

All verification happens on your computer - your data never leaves your device.

Automatic Retries

Intelligent retry mechanism handles temporary network issues automatically.

Simple File Input

Just provide a text file with numbers - no complex setup required.

Secure License

Protect your investment with our secure license validation system.

Detailed Logs

Comprehensive logging helps track verification progress and troubleshoot issues.

System Requirements

Ensure your system meets these requirements for optimal performance

Operating System

Windows 10 or 11 (64-bit version required)
Google Chrome

Latest version of Google Chrome must be installed
Memory

Minimum 4GB RAM (8GB recommended for large lists)
Storage

100MB free disk space for software and temporary files
Internet Connection

Stable broadband connection required for verification
WhatsApp Account

Active WhatsApp account for QR code authentication

Troubleshooting

Solutions to common issues you might encounter

This is usually caused by security software blocking the application. Try these solutions:

Add the software folder to your antivirus exclusion list
Ensure you have the latest version of Google Chrome installed
Run the software as Administrator (right-click > Run as administrator)
Make sure all files are in the same directory and not modified

If you're having trouble with the QR code:

Ensure your phone has an active internet connection
Try refreshing the QR code page in the browser window
Make sure you're scanning with the same WhatsApp account you want to use for verification
Check that your phone's date and time match your computer's
Restart both your computer and phone if issues persist

If numbers aren't verifying correctly:

Verify your input file is named exactly numbers-need-to-be-checked.txt
Ensure each number is on its own line in international format (e.g., +971501234567)
Check that your internet connection is stable
Make sure WhatsApp Web is properly connected (green dot in the interface)
Try with a small test file (5-10 numbers) to confirm functionality

If you receive an invalid license key message:

Double-check that you've entered your license key exactly as provided
If you've recently purchased, wait a few minutes and try again as license propagation can take 2-3 minutes
Ensure your computer has internet access for license validation
Contact support if the problem persists with your purchase details

For better performance:

Close other applications to free up system resources
For large lists (10,000+ numbers), consider running on a VPS
Ensure you have at least 4GB of RAM available
Use a wired internet connection instead of WiFi for stability
Verify that Google Chrome is up to date

Need More Help? Contact Us

Frequently Asked Questions

General Questions

Key Features

Bulk Verification

Local Processing

Automatic Retries

Simple File Input

Secure License

Detailed Logs

System Requirements

Operating System

Google Chrome

Memory

Storage

Internet Connection

WhatsApp Account

Troubleshooting

Ready to Start Verifying Numbers?

Frequently Asked Questions

General Questions

What is WhatsApp Number Checker?

How does the verification process work?

Do I need technical knowledge to use the software?

How do I prepare my number list?

Where are the results saved?

How does the license key work?

Key Features

Bulk Verification

Local Processing

Automatic Retries

Simple File Input

Secure License

Detailed Logs

System Requirements

Operating System

Google Chrome

Memory

Storage

Internet Connection

WhatsApp Account

Troubleshooting

The software won't start or crashes immediately

QR code won't scan or connection fails

Numbers aren't being checked properly

Getting "Invalid license key" error

Software is running very slowly

Ready to Start Verifying Numbers?