About .NET Toolbox
Building high-performance, privacy-first utilities for the modern .NET developer.
Ajay Patel
Software Developer · .NET & C# Specialist
I am a Software Developer deeply passionate about the .NET ecosystem. I built this toolbox to provide fast, serverless utilities for developers who need to convert data formats, debug connections, and format code without their proprietary data ever leaving their machine.
When working on complex internal applications, pasting sensitive JSON payloads into random online formatters is a security risk. This site solves that by executing all logic entirely within your local browser using modern Web APIs.
Why I Built These Tools
- JSON to C# Converter — Tired of manually writing model classes for every API response.
- JWT Decoder — Needed to safely inspect production tokens without pasting them into external sites.
- SQL Formatter — Raw SQL from EF Core logs is unreadable; needed instant beautification.
- GUID Generator — Repetitive task that should be instant, with multiple format options.
- Hash Generator — Quick SHA-256 verification without installing a CLI tool.
- Base64, RegEx, URL Tools — Essential daily utilities that every developer reaches for constantly.
Tech Stack & Architecture
Framework: Next.js App Router (React 19)
Hosting: GitHub Pages (Static Export)
Styling: Bootstrap 5, Inter Font & Custom CSS
Privacy: 100% client-side — zero server processing of user data
Core Principles
Privacy First
No data ever leaves your browser.
Blazing Fast
Zero server latency, instant processing.
100% Free
No paywalls, no sign-ups, forever.