Filenary

Random Password Generator

Generate a strong, random password using your browser's cryptographically secure random number generator.

This file is processed in your browser and never uploaded to a server.

How It Works

  1. 1. Drop your file here

  2. 2. Processing…

  3. 3. Download

Features

  • Cryptographically secure randomness
  • Adjustable length and character sets
  • Never leaves your device

Frequently Asked Questions

Is this password generator secure?
Yes, it uses your browser's Web Crypto API (crypto.getRandomValues), the same secure randomness source used for cryptographic keys.
Are generated passwords stored anywhere?
No, passwords are generated and shown only in your browser; nothing is saved or transmitted.
What's the maximum password length I can generate?
The length slider ranges from 6 to 64 characters.
Is every checked character type (lowercase, uppercase, digits, symbols) guaranteed to appear at least once?
No — each character is picked independently and randomly from the combined set of types you've checked, so there's no guarantee every checked type appears, especially at short lengths; using a longer length makes it more likely.
What symbols does the symbol character set include?
It's !@#$%^&*()-_=+[]{};:,.<>? — and those characters are only included when you turn on the symbols checkbox.

Related Tools

Add this tool to your website

Copy the code below and paste it into any page. It's free, needs no sign-up, and files are processed in your visitors' own browsers.