Activate bottom/top layer

`Option` + `.` / `,`

All hotkeys for Adobe Photoshop Elements (MacOS)

Tools Cycle through nested tools	`Option` + `Click tool`
Tools Move	`V`
Tools Zoom	`Z`
Tools Hand	`H`
Tools Eyedropper	`I`
Tools Rectangular Marquee	`M`
Tools Elliptical Marquee	`M`
Tools Lasso	`L`
Tools Polygon Lasso	`L`
Tools Magnetic Lasso	`L`
Tools Quick Selection	`A`
Tools Selection Brush	`A`
Tools Magic Wand	`A`
Tools Refined Selection	`A`
Tools Auto Selection	`A`
Tools Horizontal Type	`T`
Tools Vertical Type	`T`
Tools Horizontal Type Mask	`T`
Tools Vertical Type Mask	`T`
Tools Text on Selection	`T`
Tools Text on Shape	`T`
Tools Text on Path	`T`
Tools Crop	`C`
Tools Perspective Crop	`C`
Tools Recompose	`W`
Tools Cookie Cutter	`C`
Tools Straighten	`P`
Tools Eye	`Y`
Tools Spot Healing Brush	`J`
Tools Healing Brush	`J`
Tools Clone Stamp	`S`
Tools Pattern Stamp	`S`
Tools Eraser	`E`
Tools Magic Eraser	`E`
Tools Background Eraser	`E`
Tools Pencil	`N`
Tools Brush	`B`
Tools Impressionist Brush	`B`
Tools Color Replacement Brush	`B`
Tools Smart Brush	`F`
Tools Detailed Smart Brush	`F`
Tools Paint Bucket	`K`
Tools Gradient	`G`
Tools Custom Shape	`U`
Tools Rectangle Shape	`U`
Tools Rounded Rectangle Shape	`U`
Tools Ellipse Shape	`U`
Tools Polygon Shape	`U`
Tools Star Shape	`U`
Tools Line Shape	`U`
Tools Shape Select	`U`
Tools Blur	`R`
Tools Sharpen	`R`
Tools Smudge	`R`
Tools Sponge	`O`
Tools Dodge	`O`
Tools Burn	`O`
Tools Show/Hide all panels	`Tab`
Tools Default forground and background colors	`D`
Tools Switch forgorund and background colors	`X`
Text Select characters from insertion point to mouse click point	`Shift` and `Click`
Text Move 1 character left/right, 1 line down/up, or 1 word left/right	`Arrow Keys` / `Command` + `Left Arrow/Right Arrow`
Text Select word, line, or paragraph	`Double-click` / `Triple-click` / `Quadruple-click`
Text Scale and skew text within a bounding box when resizing the bounding box	`Command` and `Drag a bounding box handle`
Text Return to default font style	`Command` + `Shift` + `Y`
Text Turn Underlining on/off	`Command` + `Shift` + `U`
Text Turn Strikethrough on/off	`Command` + `Shift` + `/`
Text Decrease or increase type size of selected text 1 pt/px	`Command` + `Shift` + `<` / `>`
Selecting and Moving Object Deselect a selection	`Command` + `D`
Selecting and Moving Object Reposition marquee while selecting	`Spacebar` and `drag`
Selecting and Moving Object Add to or subtract from a selection	`Any selection tool` + `Shift` / `Option` and `drag`
Selecting and Moving Object Constrain marquee to square or circle (if no other selections are active)	`Shift` and `drag`
Selecting and Moving Object Draw marquee from center (if no other selections are active)	`Option` and `drag`
Selecting and Moving Object Constrain shape and draw marquee from center	`Shift` + `Option` and `drag`
Selecting and Moving Object Switch from Magnetic Lasso tool to Polygonal Lasso tool	`Option-click` and `drag`
Selecting and Moving Object Delete last anchor point for Magnetic or Polygonal Lasso tool	`Delete`
Selecting and Moving Object Apply/cancel an operation of the Magnetic Lasso tool	`Enter/Esc`
Selecting and Moving Object Move copy of selection	Move tool+ `Option-drag selection`
Selecting and Moving Object Move selection area 1 pixel	`Any selection` + `Arrow Keys`
Selecting and Moving Object Move selection 1 pixel	`Move tool` + `Arrow Keys`
Selecting and Moving Object Move layer 1 pixel when nothing selected on layer	`Command` + `Arrow Keys`
Selecting and Moving Object Increase/decrease detection width	`Magnetic Lasso tool` + `[` / `]`
Selecting and Moving Object Accept cropping or exit cropping	`Crop tool` + `Enter` /Esc
Selecting and Moving Object Toggle crop shield off and on	`/`
Layers Panel Set layer options	`Option-click New button`
Layers Panel Delete without confirmation	`Option-click Trash button`
Layers Panel Apply value and keep text box active	`Shift` + `Enter`
Layers Panel Load layer transparency as a selection	`Command-click layer thumbnail`
Layers Panel Add to current selection	`Command` + `Shift-click layer`
Layers Panel Subtract from current selection	`Command` + `Option-click layer thumbnail`
Layers Panel Intersect with current selection	`Command` + `Shift` + `Option-click layer thumbnail`
Layers Panel Merge visible layers	`Command` + `Shift` + `E`
Layers Panel Create new empty layer with dialog	`Option-click New Layer button`
Layers Panel Create new layer below target layer	`Command-click New Layer button`
Layers Panel Activate bottom/top layer	`Option` + `.` / `,`
Layers Panel Select next layer down/up	`Option` + `[` / `]`
Layers Panel Move target layer down/up	`Command` + `[` / `]`
Layers Panel Merge a copy of all visible layers into target layer	`Command` + `Shift` + `Option` + `E`
Layers Panel Merge down	`Command` + `E`
Layers Panel Show/hide all other currently visible layers	`Option-click the eye icon`
Layers Panel Toggle lock transparency for target layer, or last applied lock	`/`
Layers Panel Select all text; temporarily select Type tool	`Double-click text layer thumbnail`
Layers Panel Create a clipping mask	`Option-click the line dividing two layers`
Layers Panel Rename layer	`Double-click the layer name`
Layers Panel Add to layer selection in Layers panel	`Shift` + `Option` + `[` / `]`
Layers Panel Copy the mask from one layer to another, and ask to replace if the mask is already present	`Option` + `drag layer mask`
Painting and Brushes Switch to Eyedropper tool	`Any painting tool or shape tool` + `Option`
Painting and Brushes Select background color	`Eyedropper tool` + `Option-click`
Painting and Brushes Cycle through blending modes	`Shift` + `+` / `-`
Painting and Brushes Fill selection/layer with foreground or background color	`Option` + `Backspace` / `Command` + `Backspace`
Painting and Brushes Display Fill dialog box	`Shift` + `Backspace`
Painting and Brushes Lock transparent pixels on/off	`/`
Painting and Brushes Connect points with a straight line (draw a straight line)	`Any painting tool` + `Shift-click`
Painting and Brushes Delete brush	`Option-click brush`
Painting and Brushes Decrease/increase brush size	`[` / `]`
Painting and Brushes Decrease/increase brush softness/hardness in 25% increments	Shift+ `[` / `]`
Painting and Brushes Select previous/next brush size	`,` / `.`
Painting and Brushes Select first/last brush	`Shift` + `,` / `.`
Painting and Brushes Display precise cross hair for brushes	`Caps Lock`