Dev Tools

We recently added a dedicated Developer Tools section to Learn Code Camp and shipped multiple utility tools in one go. The goal was simple: Client-side only. Your data stays in your browser on this page. That requirement shaped every implementation choice. What We Added We added a new /tools section with these live tools: JSON Formatter + Validator Base64 Encode/Decode URL Encode/Decode UUID Generator (v4) Unix Timestamp Converter JWT Decoder Regex Tester Text Diff Checker Hash Generator (SHA-256, MD5) Why Client-Side Only? For utility tools, people often paste sensitive payloads: tokens, configs, logs, API responses, and JSON with private fields. ...

Introduction As developers, we often find ourselves juggling multiple projects, each requiring different versions of Python or Java. Maybe you’re maintaining a legacy application that runs on Python 3.8 while building a new microservice on Python 3.12. Or perhaps you’re working with Java 11 for one client and Java 21 for another. Manually managing these versions can quickly become a nightmare of PATH variables, symlinks, and “it works on my machine” debugging sessions. ...

Introduction If you’ve ever stared at a cryptic error message from a CLI tool wondering “What HTTP requests is this thing actually making?”, you’re not alone. Whether it’s a failed git clone, a mysterious npm install error, or tracking claude code for finding prompts, finding out what data your application sends to third-party services, understanding HTTP traffic is crucial for modern development. Enter HTTP Toolkit – an open-source powerhouse that makes intercepting and debugging HTTP traffic almost effortless. ...