How to Generate a Valid CNPJ for Testing and Simulations
Generating a valid CNPJ for testing is essential for developers, QA testers, and software teams working with systems that require business registration data. On this page, you will learn how to safely and quickly generate fake CNPJs. Ideal for form validation, registration simulation, and ensuring system reliability.
Complete tutorial: how to generate valid CNPJs for testing systems
📋 Introduction
This generator allows you to quickly create CNPJs for testing and simulations. You can easily copy and use the generated CNPJs wherever you need them.
🚀 Step 1: Set Quantity
Enter the number of CNPJs you want to generate in the "Quantity of CNPJs" field.
Choosing the number of CNPJs is the first step. It allows you to simulate different situations in automated testing, such as multiple companies in a registration system or a batch of data for import.
✅ Step 2: Accept the Terms
Accept the Terms of Use and Responsibility to proceed.
🛠️ Step 3: Choose Formatting
Check the "Format with dots" option to generate formatted CNPJs (e.g., 12.345.678/0001-90).
📋 Step 4: Generate CNPJs
Click the "Generate CNPJs" button to get the numbers.
🔢 Step 5: Copy CNPJs
To copy a CNPJ, click the "Copy" button next to the generated number.
❓ Frequently Asked Questions
🧐 What is a fake CNPJ?
A fake CNPJ is a number generated for testing and simulations, without any real company association.
📌 How can I use a fake CNPJ?
You can use it for system registration testing, form validations, and development purposes.
🔒 Is the CNPJ generator safe?
Yes! The numbers are randomly generated and follow the valid format, ensuring they are not linked to real companies.
🧾 About the Utinix CNPJ Generator
Our CNPJ generator was built for developers and testers who need valid but fake data. It follows the official Brazilian CNPJ structure, including validation digits and proper formatting.
By using this generator, you can ensure your registration systems, ERPs, and integrations are ready to handle real CNPJs without legal or privacy risks.
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