What is the recommended length for an API secret token?

A minimum length of 32 characters (alphanumeric or hex) is standard practice for secure API secret keys and session tokens.

Updated: August 2026 • Verified v1.2

Random String, Secret Key & API Token Generator

Developer ToolsHigh Usage

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.

Cryptographic Entropy: Bits = Length * log2(Charset_Size)

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Understanding Your Results

Generates cryptographically random string tokens using native Web Crypto APIs (`window.crypto.getRandomValues`) with entropy bit calculations.

Practical Guidance & Next Steps

A 32-character alphanumeric token provides ~190 bits of cryptographic entropy, making brute-force attacks mathematically infeasible.

What is this?

A cybersecurity developer utility that produces cryptographically random string tokens for API authentication.

How does it work?

1. Select token length (8 to 256 chars). 2. Choose character set preset (Alphanumeric, Hexadecimal, Base64URL, Symbols). 3. Generate and copy secure tokens in 1 click.

Why use it?

Generates secure API secrets and webhook keys without using third-party server endpoints.

Technical Scope & Calculation Limitations

Generates tokens up to 256 characters locally in browser memory.

Frequently Asked Questions

Tokens are generated using your browser's cryptographically secure pseudo-random number generator (`window.crypto.getRandomValues`).

Windows Desktop & Widget Options

Want this capability on your Windows desktop?

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Desktop App

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DevToys — Swiss Army Knife for Developers

Free open-source offline desktop app for Windows featuring 30+ formatters, converters, and hash tools.

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By Etienne Baudoux (DevToys Team)View Widget

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