I take 4K screenshots on a 1080p monitor with one easy setting

I write articles about tech, and clear screenshots make all the difference when showing people how to use software or highlight a specific feature. The problem is that I still use a 1080p monitor. Whenever I zoom in to emphasize a small window or button, the resolution drops, the image looks fuzzy, and any text becomes nearly impossible to read. I don’t really watch or play 4K games on my PC, so I didn’t want to spend hundreds of dollars on a 4K monitor just to capture better screenshots.