Random String Generator

Create secure, random strings for API keys, passwords, or testing.

0 Lines | 0 Chars
32
Client-side Crypto
Custom Chars:
0 Lines | 0 Chars

Secure & Random

Uses window.crypto for cryptographically secure randomness.

Bulk Generation

Generate thousands of unique strings instantly. Perfect for database seeding.

File Processing

Upload a list of IDs or names to generate a unique token for each line.

Try These Examples

API Key (32 chars)

Generate a secure 32-character alphanumeric API key with mixed case and numbers.

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Strong Password

Create a complex 20-character password with all character types including symbols.

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Numeric OTP Code

Generate a 6-digit numeric code, perfect for OTP and verification purposes.

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Hex Color Codes

Generate random 6-character hex color values using uppercase letters and numbers.

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Session Token

Create a long 64-character session token with maximum security.

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CSRF Token

Generate a short but secure 16-character alphanumeric CSRF token.

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Readable Code

Create an easy-to-read 8-character code that excludes ambiguous characters like I, l, and O.

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Custom Separator

Generate strings with custom characters using a dash separator pattern.

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Online Random String Generator

Our Random String Generator is a powerful tool designed for developers, testers, and security professionals. Whether you need strong API keys, unique session tokens, or random test data, this tool delivers secure results instantly directly in your browser.

Key Features

  • Cryptographically Secure: Uses the Web Crypto API (window.crypto) for true randomness, ensuring your strings are unpredictable.
  • Fully Customizable: Choose from uppercase, lowercase, numbers, and symbols. Add your own custom characters or exclude ambiguous ones.
  • Bulk Processing: Generate thousands of strings at once or process an uploaded file to assign a random token to each line.
  • Client-Side Only: All generation happens in your browser. No data is ever sent to our servers.

Common Use Cases

  • API Keys: Generate 32 or 64-character alphanumeric keys for your application.
  • Passwords: Create strong, complex passwords that resist brute-force attacks.
  • Test Data: Populate databases with random strings for stress testing.
  • Gift Codes: Generate unique promo codes or voucher strings.