Generators for developers
This category brings together 10 generators for developers that produce values ready to paste into your code: UUID identifiers, passwords with a measured entropy, Lorem Ipsum text, harmonious color palettes, timestamps, QR codes, URL slugs, explained cron expressions, random numbers and fake data for seeding a development database.
It is the largest category in the catalogue because it covers two very different moments: the start of a feature, when you need filler content, test data or a palette, and the road to production, when you need cryptographically random values. The password, number and data generators use crypto.getRandomValues(), the secure browser generator, and none of the values produced is transmitted or logged.
Tools in this category
UUID Generator
Generate unique UUID v1 and v4 identifiers
Password Generator
Generate customizable secure passwords
Lorem Ipsum Generator
Generate placeholder text for design
Palette Generator
Create harmonious color palettes
Timestamp Converter
Convert between Unix timestamps and dates
QR Code Generator
Generate QR codes from text or URLs
Slug Generator
Convert text to URL-friendly slugs
Cron Parser
Parse and explain cron expressions
Random Number Generator
Generate random numbers in custom range
Fake Data Generator
Generate test data: names, emails, addresses
Frequently asked questions
Are the generated values genuinely random?
The generators that need it use crypto.getRandomValues(), a cryptographically secure pseudorandom generator seeded from operating system entropy sources. It is the same mechanism professional security applications rely on, so it is suitable for passwords, secrets and draws.
Which UUID version should I use as a primary key?
Version 4 is the most widespread thanks to its simplicity, but being fully random it fragments B-tree indexes. If insertion order matters for performance, version 7 (RFC 9562) combines a sortable timestamp with randomness and avoids that problem while keeping global uniqueness.
Can I use the fake data in a real environment?
They are meant for development, QA and demos: the shape is valid but the values correspond to no real person or entity, which lets you share development databases without exposing personal information. They must never be used for impersonation or to populate records with legal standing.