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Nano ID Generator

Q: Is this cryptographically secure?

Yes. This tool uses crypto.getRandomValues(), the browser's cryptographically secure random number generator, ensuring IDs are unpredictable and suitable for security-sensitive use cases.

Generate cryptographically secure unique IDs with a custom alphabet and size. Uses crypto.getRandomValues().

Alphabet

Size (characters)

Count (1–100)

Entropy: — bits

Generated IDs

Click "Generate IDs" to create IDs.

About Nano ID Generator

Nano ID Generator is a free, browser-based utility built for developers and engineers who need a fast, reliable way to . Whether you're debugging an API response, preparing data for deployment, or validating configuration files, this tool handles the job in seconds — with zero server calls. Everything runs locally in your browser, so your source code and data stay private.

How to Use

Enter or paste your input Type or paste your data into the input area. You can also use keyboard shortcuts (Ctrl+V) for quick pasting.

Configure options Adjust any settings or options above the input area to customize the output format and behavior.

Process your data Click the primary action button to process your input. The result appears instantly — no server round-trips.

Review the output Check the output area for your processed result. Any errors or warnings will be displayed clearly.

Copy or download Use the Copy button to copy the result to your clipboard, or download it as a file if that option is available.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use Nano ID Generator?

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Instant Results, Zero Setup No need to install CLI tools, configure environments, or write scripts. Nano ID Generator gives you the result instantly in your browser — paste, click, done.

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Your Code Stays Private All processing runs locally using JavaScript. Your source code, API keys, tokens, and configuration data never leave your browser — not even temporarily.

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Part of Your Dev Workflow Bookmark this tool alongside your IDE and terminal. When you need a quick format, encode, or validation, it's one tab away — faster than installing yet another npm package.

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Use It Anywhere Works on any device with a modern browser — laptop, tablet, or phone. Perfect for quick fixes when you're away from your development machine.

Frequently Asked Questions

Nano ID is a tiny, secure, URL-friendly unique ID generator. Unlike UUID, it lets you choose the alphabet and size. The default configuration (21 chars, 64-char alphabet) gives ~126 bits of entropy — comparable to UUID v4.

Yes. This tool uses crypto.getRandomValues(), the browser's cryptographically secure random number generator, ensuring IDs are unpredictable and suitable for security-sensitive use cases.

For most unique ID purposes, 100+ bits is considered very safe. At 126 bits with the default settings, you would need to generate ~4 billion IDs per second for 100 years before getting a 1% chance of collision.