Change [0] to [1] for the second monitor. | Method | Key Combo | Capture type | |--------|-----------|---------------| | PrtScn alone | ❌ Both monitors | Full desktop | | Alt + PrtScn | ✅ Active window | One screen (usually) | | Win + Shift + S | ✅ Select area | One monitor | | ShareX | Ctrl + PrtScn | Monitor under mouse | Pro tip If you want PrtScn to capture only the active monitor by default (without Alt), use ShareX → Settings → Hotkeys → Set “PrtScn” to “Capture monitor”. Bottom line: Stop using plain PrtScn . Use Alt + PrtScn or Win + Shift + S for clean, single-monitor screenshots.