Published: May 12, 2026

awk is one of the most powerful text processing tools in Linux. The name comes from the initials of its three creators: Aho, Weinberger, and Kernig…

Sorting, reversing, or shuffling text lines seems trivial—until you dig into the details. Let’s explore the algorithms behind a proper **line sort …

I was building a keyboard shortcut feature recently and kept mixing up event.key, event.code, and event.keyCode. So I built an online tool to…

When working on frontend-backend separation projects, I often need to construct JWT tokens for API debugging. Asking backend colleagues every time …

If you’re a backend developer, you’ve probably pasted a JWT into jwt.io more times than you can count. But have you ever thought about what happens…

When working on website SEO, you often hear about “structured data”. Simply put, it’s a machine-readable format to tell search engines: this is a p…

When debugging API responses, the most frustrating thing is JSON format errors. The console throws Unexpected token with just a character positio…

Working with complex JSON data recently, plain text editing wasn’t cutting it. I needed a visual tree editor where I could add, delete, and modify …

When working with JSON data, staring at raw structures can be overwhelming—especially when nested objects and arrays are mixed together. Converting…