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Random String Generator

Create secure, random text strings for passwords, API keys, or test data.

Configuration

16

True Randomness

Generate cryptographically secure random strings for passwords, API keys, and salts. No pseudo-random shortcuts.

Secure Random

Powered by window.crypto for cryptographic strength, not Math.random().

Customizable

Control length and character sets (A-Z, a-z, 0-9, special chars).

Dev Ready

Perfect for generating API keys, secrets, and auth tokens.

Clean Output

Option to exclude ambiguous characters (like I, l, 1, 0, O) for readability.

How this Random String Generator works

This security and development tool creates random character strings of specified length and composition. Users can include uppercase, lowercase, numbers, and special symbols. Crucial for generating strong passwords, API keys, session tokens, or unique IDs (UUIDs) for database entries. It allows developers to test input limits, fuzz-test text fields, and ensure systems handle special characters correctly. The tool uses secure randomization to ensure high entropy for sensitive cryptographic applications.

How to Use

1

Set Length

Choose how long you want your random string to be (up to 128 characters).

2

Customize

Select which character types to include: Uppercase, Lowercase, Numbers, or Symbols.

3

Generate & Copy

Get your random string instantly and copy it with one click.

Frequently Asked Questions

What does a Random String Generator do?
It creates random strings for testing, IDs, placeholders, and sample data. It's helpful for QA, database testing, and generating quick dummy values.
Can I choose string length and character types?
Yes. Many tools let you set the length and include uppercase, lowercase, numbers, and symbols. Choose based on where the string will be used.
Is it safe to use random strings as passwords or tokens?
For basic use, random strings are fine. For security-sensitive tokens, make sure the generator uses cryptographically secure randomness. If your tool includes a "secure" option, enable it.
Why do some systems reject my generated string?
Some systems block certain characters, limit length, or require specific patterns. Adjust character sets and length to match the rules of your target system.
Is this Random String Generator secure?
Yes. It runs 100% client-side, so generation happens in your browser and nothing is uploaded to a server.

Related Tools

The Random String Generator is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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