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Practical guides for developers — security, best practices, and technical deep dives.
Reference
→How to Generate a UUID in JavaScript, Python, Go, Rust and More
Copy-paste UUID generation code for every major language: JavaScript, TypeScript, Node.js, Python, Go, Rust, PHP, Java, C# and the command line.
CSS
→HEX vs RGB vs HSL: Which Color Format Should You Use in CSS?
HEX, RGB, and HSL all describe the same colors — but each has a different use case in CSS. Learn when to use each and how to convert between them.
Security
→Why You Should Never Paste JWT Tokens Into Online Tools
Most online JWT decoders send your token to a server. A JWT payload contains user data, roles, and session info — here's what the risk actually is.
Security
→The Hidden Risk of Server-Side Developer Tools
Most online dev tools look identical whether they're client-side or server-side. Here's how to tell the difference and why it matters for your data.