Single-key tool activation. No modifier needed to switch tools:
- V: Move tool
- M: Marquee selection (rectangle/ellipse)
- L: Lasso tool
- W: Quick Selection / Magic Wand
- C: Crop tool
- E: Eraser
- G: Gradient / Paint Bucket
- B: Brush
- T: Type
- P: Pen tool
- U: Shape tools
- I: Eyedropper
- H: Hand (pan)
- Z: Zoom
- D: Default foreground/background (black/white)
- X: Swap foreground/background colors
Layer management. Cmd+J / Ctrl+J duplicates the active layer. Cmd+E / Ctrl+E merges down. Cmd+Shift+E / Ctrl+Shift+E merges all visible layers. Cmd+G / Ctrl+G groups selected layers.
Transform. Cmd+T / Ctrl+T enters Free Transform mode — resize, rotate, skew, or distort the current layer or selection with handles and keyboard precision.
Selections. Cmd+D / Ctrl+D deselects. Cmd+Shift+I / Ctrl+Shift+I inverts the selection. Cmd+A / Ctrl+A selects all.
Adjustments. Cmd+L / Ctrl+L opens Levels. Cmd+M / Ctrl+M opens Curves. Cmd+U / Ctrl+U opens Hue/Saturation. Cmd+B / Ctrl+B opens Color Balance.
Undo. In current Photoshop versions, Cmd+Z / Ctrl+Z is multi-step undo (press repeatedly to step back through history).