Toolbox

A client-side developer toolkit with utilities for code conversion and middleware design for .NET developers.

PWA & Offline Support

Toolbox is a full Progressive Web App - install it and use every tool with no internet connection required.

• Installable - use your browser's "Install app" / "Add to Home Screen" option to run Toolbox in its own window, on desktop or mobile.
• Works fully offline - all tools run entirely client-side, so once the app has loaded once, it keeps working with no network at all (flight mode, tunnels, flaky wifi, you name it).
• Background update checks - a service worker periodically checks for new deployed versions. When one is ready, a small "reload to update" banner appears - your current session is never interrupted or reloaded without asking.

Features

• JSON to C# Converter - Convert JSON into C# classes, records, or structs with customizable serialization options
• C# ↔ TypeScript Converter - Bidirectional conversion between C# classes and TypeScript interfaces or types
• Middleware Designer - Visual drag-and-drop builder for ASP.NET Core middleware pipelines with request simulation and code generation
• JWT Decoder - Decode and inspect JSON Web Tokens with claim explanations and validity checks.
• Package Centralizer - Convert .NET projects to Central Package Management with Directory.Packages.props.
• C# Mind Map - A list of all C# versions with their features, including links to the official documentation
• List Visualizer - Visualize the internal structure of C# List
• Span Visualizer - Visualize the internal structure of C# Span
• SRP Analyzer - Analyze C# classes for Single Responsibility Principle violations with color-coded dependencies
• Strong Typer - Generate C# Options classes from JSON configuration
• Typed DI Helper - Generate strongly-typed dependency injection configurations for .NET HttpClient and SignalR with support for resilience and protocols
• cURL → HttpClient - Convert any curl command into idiomatic C# HttpClient code (inline, IHttpClientFactory, or typed client) with optional body record generation
• Regex Tester - Test .NET regular expressions with live match highlighting and named-group inspection, generating source-generated ([GeneratedRegex], default) or classic new Regex(...) C# code

Support & Contributing

Thanks to all contributors and people that are creating bug-reports and valuable input:

Development

Start the development server:

ng serve

Build for production:

ng build

Run tests:

ng test