# Random String Generator

Generate random strings with customizable character sets, length, and patterns

> Canonical page: https://elysiatools.com/en/tools/random-string-generator

- **Category:** Generator

- **Keywords:** random, string, generator, password, token, id, random string generator

## Overview

The Random String Generator is a versatile utility designed to create secure, unique, and customizable strings for passwords, tokens, IDs, and testing data. With granular control over character sets, length, and exclusion rules, you can generate high-entropy sequences tailored to your specific technical requirements.

## Inputs

- **String Length** (number): Enter string length
- **Quantity** (number): Number of strings to generate
- **Separator (for multiple strings)** (text): Separator between strings
- **Include Uppercase (A-Z)** (checkbox)
- **Include Lowercase (a-z)** (checkbox)
- **Include Numbers (0-9)** (checkbox)
- **Include Symbols (!@#$%^&*)** (checkbox)
- **Custom Character Set** (text): Enter custom characters
- **Exclude Similar Characters (0,O,l,I)** (checkbox)
- **Exclude Ambiguous Characters ({,},\[,\],(,),|,\)** (checkbox)

## When to use

- Creating secure, temporary passwords or authentication tokens for user accounts.
- Generating unique identifiers or reference codes for database entries and API requests.
- Producing randomized test data strings to verify system input validation and security protocols.

## How it works

- Define the desired length and quantity of the strings you need to generate.
- Select your preferred character types, such as uppercase, lowercase, numbers, or symbols.
- Apply optional filters to exclude ambiguous or similar characters for better readability.
- Click generate to instantly produce your strings, which can be separated by custom delimiters.

## Use cases

- Generating unique API keys for internal microservices.
- Creating temporary passwords for new user onboarding flows.
- Building randomized mock data for software performance testing.

## Frequently asked questions

### Are the generated strings cryptographically secure?

This tool generates random strings suitable for general use, such as test data or non-critical identifiers. For high-security cryptographic keys, use dedicated security libraries.

### Can I exclude specific characters?

Yes, you can use the 'Exclude Similar' or 'Exclude Ambiguous' checkboxes to remove characters like 0, O, l, I, or brackets that might be confusing.

### Is there a limit to how many strings I can generate at once?

You can generate up to 100 strings in a single batch request.

### Can I use my own custom characters?

Yes, the 'Custom Character Set' field allows you to define a specific set of characters to be used during the generation process.

### What is the maximum length for a string?

The tool supports generating strings up to 1,000 characters in length.

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## Samples

- [Android String Processing Java Samples](https://elysiatools.com/en/samples/android-string-processing-java): Android Java string processing examples including string split and join, regular expressions, and string replacement
- [Android String Processing Kotlin Samples](https://elysiatools.com/en/samples/android-string-processing-kotlin): Android Kotlin string processing examples including string split and join, regular expressions, and string replacement
- [macOS String Processing Objective-C Samples](https://elysiatools.com/en/samples/macos-string-processing-objectivec): macOS Objective-C string processing examples including NSString, NSMutableString, searching, regex, and encoding
- [macOS String Processing Swift Samples](https://elysiatools.com/en/samples/macos-string-processing-swift): macOS Swift string processing examples including split/join, regular expressions, and string replacement

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