Do Generator

Free Online Tools for Australia AU

Do Generator Australia provides free online tools built for Australian users. Generate random numbers, QR codes, barcodes, and secure passwords with Australian English spelling, four-digit postcode formatting, and designs that work across all states and territories including regional areas.

Dev Tools

10 tools in total

Programming tools and code generators for developers. Learn how to generate random numbers, strings, and data in various programming languages

All Dev Tools Tools

Python Random Number Generator

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Learn how to generate random numbers in Python using random, secrets, and numpy modules. Interactive code examples with live execution and output demonstration

Java Random Number Generator

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Learn how to generate random numbers in Java using java.util.Random, SecureRandom, ThreadLocalRandom, and Math.random(). Interactive code examples with detailed explanations

C++ Random Number Generator

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Learn how to generate random numbers in C++ using rand(), srand(), <random> library, and std::uniform_int_distribution(). Interactive code examples with detailed explanations

Random IMEI Generator

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Generate valid random IMEI numbers with Luhn checksum for QA testing, app development, and device data mockups.

UUID Generator

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Generate RFC 4122 compliant UUIDs in multiple versions with cryptographically secure random generation and bulk support

ULID Generator

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Generate ULIDs (Universally Unique Lexicographically Sortable Identifiers) with 48-bit timestamp and 80-bit randomness

Crontab Generator

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Generate crontab expressions with an intuitive visual interface for Linux/Unix task scheduling

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and CRC32 hashes from any text, computed locally in your browser

vCard Generator

Generate vCard (.vcf) files from form input for digital contact cards

Discord Timestamp Generator

Create Discord magic timestamps that display the correct local time for every user. Pick a date, choose a timezone, preview all 7 Discord timestamp formats live, and copy the <t:...> code with one click

Developer Utilities & Code Tools

Essential developer tools for generating UUIDs, ULIDs, cron expressions, Markdown tables, and ASCII diagrams. Built by developers, for developers.

Why Choose Our Dev Tools Tools?

Standards Compliant

UUID generation follows RFC 4122, ULIDs follow the specification, and cron expressions are POSIX-compatible.

Code Examples

Interactive code examples for Python, Java, and C++ random number generation with live output.

Bulk Operations

Generate up to 100 UUIDs/ULIDs at once, build complex cron expressions visually, and create ASCII diagrams interactively.

Frequently Asked Questions

We support UUID v1 (timestamp), v4 (random), v5 (SHA-1 name-based), v7 (time-ordered), and Nil UUID — all RFC 4122 compliant.

Our programming tool pages include interactive examples for Python, Java, and C++ with live code execution and output demonstrations.

UUIDs are 128-bit identifiers. ULIDs are also 128-bit but combine a 48-bit timestamp with 80-bit randomness, making them lexicographically sortable by time.