Most everyday image work comes down to a handful of operations, and most mistakes come from picking the wrong one. "Make this smaller" can mean crop, resize or compress — three different things with three different costs.

These articles cover each operation with the numbers that make it look deliberate: border widths in percent rather than pixels, corner radii that match real UI conventions, text sizes relative to image height, and the correct order to apply everything (crop, then resize, then compress). Several also explain the failures people run into — why an image looks blurry after resizing, why upscaling can't be undone, and why a circular crop turns into a white box.