Random String Generator
Generate secure random strings with customizable length and character options. Perfect for creating passwords, API keys, tokens, unique identifiers, and test data.
Why use this tool?
Random strings are essential for security, testing, and generating unique identifiers. This tool provides cryptographically secure randomness with full customization.
- Secure generation — Uses crypto.getRandomValues() for high-quality random strings.
- Fully customizable — Choose length, character types, and exclude confusing characters.
- Multiple strings — Generate up to 50 strings at once.
- Privacy-focused — All generation happens in your browser. No data is sent to servers.
How to use
- Set the desired String Length (1-256 characters).
- Choose how many strings to generate (1-50).
- Select which character types to include: uppercase, lowercase, numbers, and/or symbols.
- Optionally check "Exclude ambiguous characters" to remove confusing characters like 0, O, l, 1.
- Click Generate to create your random strings.
- Click Copy Results to copy all strings to your clipboard.
Frequently Asked Questions
Yes, this tool uses cryptographically secure random number generation (crypto.getRandomValues) to ensure high-quality randomness suitable for passwords, tokens, and security-sensitive applications.
Yes, you can choose to include uppercase letters, lowercase letters, numbers, and special symbols. You can also exclude ambiguous characters like 0, O, l, and 1.
No. Everything runs client-side in your browser. Your generated strings are not stored or sent to any server.