Generator Tools
Data and content generators for testing, design, and development.
Fake Data Generator
Mock JSON Generator
Username Generator
Color Palette Generator
Lorem Markup Generator
Random Number Generator
CSV Data Generator
Random Date Generator
Email Address Generator
Avatar Generator
Cron Expression Builder
Build and parse cron schedule expressions
API Key Generator
Generate secure API keys and tokens in various formats
Short ID Generator
Generate nanoid-style short unique identifiers
Regex Tester
Test regular expressions with real-time matching
URL Slug Generator
Learn Generator Tools
Key concepts and practical guides to level up your workflow.
📖 用語集
A checksum algorithm producing a 32-bit value used to detect accidental data corruption in files …
A random number generator producing output unpredictable enough for cryptographic use (e.g. key generation).
A unique ID format designed for horizontal scaling, combining a timestamp, counter, fingerprint, and random …
A 128-bit hash function producing a 32-character hexadecimal digest, now considered cryptographically broken.
A tool that converts text into URL-safe slugs by lowercasing, replacing spaces with hyphens, and …
A software library that generates realistic but fictitious data such as names, addresses, and emails …
An algorithm that produces a sequence of numbers approximating random values from a deterministic seed.
A 6-character hex string (#RRGGBB) representing a color, with each pair encoding red, green, and …
📘 ガイド
Password generation requires cryptographic randomness and careful character selection. This guide covers the principles behind strong password generation, entropy calculation, and common generation mistakes to …
Choosing the right unique identifier format affects database performance, sorting behavior, and system architecture. This comparison covers UUID, ULID, Snowflake ID, and NanoID for different …
Lorem Ipsum has been the standard placeholder text since the 1500s, but realistic placeholder content produces better design feedback. This guide covers alternatives and best …
Incorrect random number generation causes security vulnerabilities, biased results, and non-reproducible tests. This guide covers common RNG pitfalls and how to verify your random numbers …
Explore All Peasy Tools
15 specialized sites — one easy-peasy family.