One app. Every developer tool you ever needed!
JSON converters, encoders, cryptography, formatters, and more.
All offline. All instant. All in one place.
Why Developers Love It
Every operation runs locally on your device. Your data, your keys, your secrets never leave your machine. No analytics. No telemetry. No surprises.
Launches in under a second. Process large JSONs, generate type definitions, compute cryptographic hashes, all without waiting. Built for speed.
Hit ⌘P and type to reach any of the 100+ tools in milliseconds. No mouse, no menus. Your hands stay on the keyboard where they belong.
Work on multiple tasks simultaneously. Open JSON in one tab, run a regex test in another, generate UUIDs in a third. Pin your go-to tools for instant access.
Built with Flutter for macOS, Windows, and iPadOS. Fast, responsive, and consistent across all platforms.
Syntax highlighting, multi-cursor editing, and an interface your fingers already know. Every input field is a proper editor, not a plain textarea.
The Toolbox
From parsing to cryptography; if you do it regularly, it's already here.
Transform between JSON, CSV, YAML, XML, TOML, and more, instantly and losslessly.
Generate typed models and HTTP clients from JSON schemas and cURL commands.
Encode and decode Base64, URLs, JWTs, HTML entities, and more.
Generate hashes and encrypt/decrypt data with AES, all locally on your device.
Generate UUIDs, test regex, parse cron expressions, compare diffs, and more.
Validate and beautify JSON, XML, YAML, CSS, and SQL with one click.
Render JSON trees, CSV tables, HTML, Markdown, SVG, and images inline.
Create and scan QR codes - fully offline, no camera required for generation.
Developer Tools Pro is 100% offline. No account needed. No telemetry. No network calls. Your code, your secrets, your data, process everything locally and keep it that way.
Get Started
All 100+ tools included. Available now on Mac, Windows, and iPad.
Latest: v4.0 · What's New →
