Are these keys sent to your servers?

No. Generation happens entirely in your browser. You can verify by opening DevTools → Network and clicking Generate — zero network activity. Disable your internet and the tool still works.

Can two people get the same key?

For UUID v4 and 128-bit+ keys, the probability of a collision is so small (1 in 2^61 for UUID after billions of generations) that it is considered cryptographically impossible. You can generate billions of these per second across all humans on Earth and never collide.

What's the difference between a "strong password" and an "API key"?

Functionally similar, but the character set differs. Strong passwords include symbols (!@#$) and are meant for human typing. API keys use only URL-safe characters (letters, digits, _ -) so they survive being embedded in URLs and HTTP headers without escaping.

Why is the "Memorable" password so much longer?

It uses 4-6 dictionary words (like "correct-horse-battery-staple"). It is much longer in characters but actually higher entropy than an 8-char symbol password, and crucially, your brain can remember it. See xkcd.com/936 for the canonical explanation.

Should I rotate these keys?

For long-lived secrets (Django SECRET_KEY, AWS IAM root tokens), rotate annually or after any suspected leak. For short-lived JWT secrets, generate a new one per environment per quarter. Your password manager and secrets manager should make rotation a one-click operation.

Secure Key Generator

Generate cryptographically secure passwords, API keys, UUIDs, JWT secrets, and encryption keys. All generation happens in your browser using crypto.getRandomValues()

Memorable Password

Easy to remember word combinations

~39 bits

Strong Password (16 char)

Mixed characters for high security

~103 bits

Fort Knox (32 char)

Maximum security password

~206 bits

Alphanumeric (24 char)

Letters and numbers only

~142 bits

UUID v4

Universally unique identifier

122 bits

API Key

Stripe-style API key format

~190 bits

128-bit Hex Key

For AES-128 encryption

128 bits

256-bit Hex Key

For AES-256 encryption

256 bits

JWT Secret

Base64 encoded secret for JWT signing

256 bits

Django Secret Key

For Django SECRET_KEY setting

~282 bits

MongoDB ObjectId

24 character hex identifier

96 bits

WiFi / WPA Key

Strong wireless network password

~123 bits

100% Client-Side Security

All keys are generated entirely in your browser using the Web Crypto API (crypto.getRandomValues()). No data is ever sent to any server. This page works completely offline.

The Complete Guide

About the Secure Key Generator

Every developer eventually needs a secure random string: a Django SECRET_KEY for a new project, an AWS IAM API token, a JWT signing secret, a database admin password, or just a UUID for a new record. Reaching for an online generator is fast — but most public generators are dangerous because they either run on a server (where the key transits the network and could be logged) or use Math.random() (which is predictable and not cryptographically secure).

Our Secure Key Generator solves both problems. Every key is generated by your browser's crypto.getRandomValues() — the same cryptographically-secure pseudorandom number generator (CSPRNG) used by Node.js, Chromium, OpenSSL, and Firefox. The key never touches our servers, so there is no log, no leak risk, no third party in your security chain.

We offer 12 key formats covering nearly every real-world use case: memorable passwords (XKCD-style word phrases), strong passwords (16 and 32 characters with full symbol entropy), alphanumeric keys (URL-safe), UUID v4, Stripe-style API keys, 128-bit and 256-bit hex (perfect for AES encryption), JWT secrets in Base64, Django SECRET_KEY format with the right character set, MongoDB ObjectId (24-char hex with embedded timestamp), and WiFi/WPA keys.

How to use Secure Key Generator

Choose the key type

Click any of the 12 key cards based on what you need. The tool tells you the entropy (in bits) and a typical use case for each.

Adjust quantity or length if available

For passwords, set the desired length and toggle symbol inclusion. For hex keys, choose 128-bit (32 chars) or 256-bit (64 chars). UUIDs and ObjectIds have fixed formats.

Click "Generate"

A fresh key is created instantly using crypto.getRandomValues(). Click again as many times as you need — each click produces a completely independent value.

Copy and use

Click the copy icon to put the key on your clipboard. The history strip shows your last 5 generated keys so you can recover one if you accidentally overwrote it.

Use safely

Paste the key directly into your .env file, secrets manager, or password manager. Never commit it to git. Rotate periodically for production secrets.

Common Use Cases

New project setup

Generate a Django SECRET_KEY, NextAuth SECRET, or JWT secret for a fresh project in seconds.

API key creation

Need to issue a Stripe-style API key for your own service? Get a 32-char ck_live_ prefixed token instantly.

Database admin passwords

Generate 32-character mixed-symbol passwords for root MongoDB, PostgreSQL, or Redis users.

Encryption keys

Get a 256-bit hex key for AES-256-GCM encryption, or 128-bit for AES-128. Both meet NIST recommendations.

Identifying records

Generate UUID v4 for new database records, or MongoDB ObjectIds when working with Mongo collections.

Guest WiFi passwords

Generate a memorable 4-word passphrase that's easy to share verbally but hard to guess.

Frequently Asked Questions

They use crypto.getRandomValues() — the W3C-standard cryptographically-secure RNG built into every modern browser. The same algorithm Node.js, OpenSSL, and Chrome use. A 256-bit hex key has 2^256 possible values — astronomically more than any brute-force attack could explore in the age of the universe.