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DevTools Generators create UUIDs, random passwords, QR codes, crontab expressions, fake test data, and regex patterns — locally in your browser, free with no signup.

UUID Generator

Generate UUID v4 (random) or v1 (timestamp) identifiers with batch output and one-click copy.

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Password Generator

Generate strong passwords with cryptographically secure randomness—customize length and uppercase, lowercase, digits, and symbols.

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QR Code Generator

Turn text or URLs into QR code images with live preview and PNG download—great for links and campaign materials.

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Crontab Generator

Configure cron five-field schedules and commands, output standard crontab lines with human-readable execution notes.

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Fake Data Generator

Generate realistic test user data locally in the browser—custom fields, batch size, and export as JSON, CSV, or SQL.

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Regex Generator

Pick common types (Email, URL, IPv4/IPv6, UUID, MAC, dates, times) and get a JavaScript regex with notes and sample matches.

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About this tool

Development and testing often need quick IDs, credentials, test data, and cron expressions. This toolset covers those high-frequency tasks.

How to use

  1. Choose a generator (UUID, password, QR code, etc.).
  2. Configure options (length, charset, count).
  3. Generate and copy or download the result.

FAQ

Is the password generator secure?

Passwords are generated locally via the browser crypto API and never sent to a server.

What fake data types are supported?

Names, emails, addresses, phone numbers, and other common field types with batch generation.

What cron schedules does the crontab generator support?

Every minute, hour, day, week, month, and other common patterns with standard cron output.

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