Free Online Developer Tools

Format JSON, encode Base64 and generate UUIDs instantly in your browser.

What you can do with Codartium tools

Codartium offers free online developer tools designed for fast workflows in the browser. You can format and validate JSON data, encode and decode Base64 text, and generate UUID values for APIs, databases, and testing scenarios. Every tool runs instantly without installation, making it easier to solve day-to-day development tasks from any device. The goal is simple: reliable utilities that are easy to use, secure, and available when you need quick results.

Quick examples

JSON Formatter: {"name":"Codartium","active":true}
Base64 Encoder: Hello World -> SGVsbG8gV29ybGQ=
UUID Generator: 550e8400-e29b-41d4-a716-446655440000

Related Developer Tools

Development Tools

New

{ }

JSON Formatter

Format and validate JSON instantly

"name": "Codartium",

"version": 2.0,

"tools": [

"json",

"base64",

"uuid"

"free": true

Use Tool

New

Base64 Encoder

Encode and decode Base64 strings

"input": "Hello, World!",

"encoded": "SGVsbG8sIFdvcmxkIQ==",

"mode": "base64",

"charset": "UTF-8",

"length": 13,

"valid": true

Use Tool

New

UUID Generator

Generate unique identifiers fast

"version": "v4",

"count": 10,

"sample": "f47ac10b-58cc-4372",

"format": "lowercase",

"hyphens": true

Use Tool