Free Online Developer Tools

A collection of free, privacy-focused utilities for developers, data scientists, and students. All tools run client-side in your browser.

Developer Utilities

JSON FormatterNew

Beautify, minify, and validate JSON data.

Base64 Converter

Encode and decode Base64 strings instantly.

SQL Formatter

Format SQL queries for better readability.

Math & Converters

Unit Converter

Convert length, weight, temperature and more.

Binary Calculator

Perform math with binary numbers.

About Our Tools Library

Welcome to the central hub for our online developer utilities. This library provides quick access to formatters, converters, calculators, and validators designed to streamline your development workflow.

Why use these tools?

**Client-Side Processing:** Your data never leaves your browser (privacy focused).
**No Registration:** All tools are 100% free and open to everyone.
**Fast & Lightweight:** Optimized for speed with no bloated frameworks.