Random String Generator - Customizable Character Set Tool
Generate random strings from fully customizable character sets. Choose exactly which characters to include and create strings of any length for testing, development, or data generation.
Features
- Custom Character Sets: Define exactly which characters to use
- Preset Character Sets: Quick options for common use cases
- Variable Length: Generate strings from 1 to 1000 characters
- Bulk Generation: Create up to 100 strings at once
- Exclude Characters: Remove confusing or problematic characters
- Copy Functionality: Easy copying of individual or all results
Common Use Cases
- Test data generation for software development
- Creating random identifiers and tokens
- Generating sample text for UI testing
- Creating random filenames or codes
- Security testing with random inputs
- Game development for random names or codes
Character Set Presets
- Alphanumeric: Letters and numbers only
- Letters Only: Uppercase and lowercase letters
- Numbers Only: Digits 0-9
- Symbols: Special characters and punctuation
- Custom: Define your own character set
Security
This tool uses the Web Crypto API (crypto.getRandomValues()) for cryptographically secure random generation, making it suitable for security-sensitive applications.
Tips
- Use preset buttons for quick character set selection
- Custom character sets override all other selections
- Preview shows exactly which characters will be used
- Exclude similar characters (0O1lI) for better readability