Free Online Developer Tools – JSON Formatter, Validators & Converters

Optimize your coding workflow with our free developer tools. Format JSON, validate code, and encode data instantly directly in your browser.

JSON Formatter & Validator

Beautify, validate, and minify your JSON data instantly.

Base64 Converter

Encode text to Base64 or decode Base64 back to text, with URL-safe output and line-by-line processing.

UUID Generator

Generate version 4 UUIDs in bulk with adjustable formatting, then copy or download the list as a text file.

URL Encoder / Decoder

Encode plain text into a percent-encoded URL string, or decode a percent-encoded string back into plain text, directly in the browser.

HEX to RGB Converter

Convert HEX color codes to RGB, HSL, and CMYK instantly. Includes a visual color picker for designers and developers.

Difference Checker

Compare two texts side-by-side and highlight the differences instantly. Perfect for code, JSON, and documents.

JWT Decoder

Decode JSON Web Tokens (JWT) instantly. View header, payload, and signature securely in your browser.

Streamline your development process with our suite of free online developer tools. Whether you need to format and beautify JSON data, validate your code, convert between HEX and RGB colors, or encode/decode Base64 strings, we have you covered. Built by developers for developers, all our tools run securely on the client-side (in your browser), ensuring your sensitive code and data never leave your machine. No registration, no bloated ads—just fast, reliable utilities to boost your productivity.