About DevToolKit

DevToolKit is a collection of free, fast, and privacy-friendly developer tools that work right in your browser. Every tool runs entirely in your browser — no data is ever sent to our servers.

Our Mission

We believe essential tools should be free and accessible to everyone. Whether you need to format code, convert data, or perform quick calculations, DevToolKit provides simple, no-nonsense tools that get the job done without requiring signups, subscriptions, or data collection.

What We Offer

• Converters — JSON to Zod, TOML to YAML, YAML to TOML, SVG to JSX, SQL to MongoDB, JSON to Protobuf, Properties to YAML
• Generators — Cron Expression Generator, Env File Generator, Nginx Config Generator, Docker Compose Generator
• Formatters — SQL Formatter, CSS Minifier, HTML Prettifier
• Utilities — Chmod Calculator, HMAC Generator

Privacy First

All processing happens locally in your browser using JavaScript. Your data never leaves your device. We don't store, log, or transmit any input you provide to our tools. Read our Privacy Policy for more details.

Built With

DevToolKit is built with Next.js and Tailwind CSS, deployed on Vercel for maximum speed and reliability. All pages are statically generated for instant loading times.