Recently, I needed to implement a batch replace feature supporting both plain text and regex modes. Seemed simple, but I ran into some interesting …

Every backend developer knows this pain: the API changed but the docs didn’t; new team members stare at outdated documentation in confusion; during…

Testing responsive designs usually means switching devices in Chrome DevTools or opening multiple tabs. I built a responsive testing tool that cons…

The pwd command might be one of the simplest yet most frequently used Linux commands. But beneath its simplicity lies interesting implementation de…

Last week, our server triggered a disk space alert. I needed to quickly identify which directories were consuming the most space. I used to rely on…

During a recent code review, I needed to compare two config files. Staring at them side-by-side was painful. Then I remembered diff — a tool I’d …

Recently, while building an image pixelation tool, I discovered something interesting: many implementations manually iterate through each pixel blo…

Written: 2026-04-30 12:39

I was building a design tool recently that needed to extract dominant colors from user-uploaded images. After diving into color quantization algori…

Recently added a barcode generation feature to a project. Turns out those black-and-white stripes have some interesting encoding rules underneath.