Keys for slicing and optimizing
Ctrl Toggle between Slice tool and Slice Selection tool
Shft-drag Draw square slice
Alt-drag Draw from center outward
Shft + Alt-drag Draw square slice from center outward
Spacebar-drag Reposition slice while creating slice

Keys for using palettes
Alt-click New button Set options (except for Actions, Animation, Styles,Brushes, Tool Presets, and Layer Comps palettes) in Photoshop
Alt-click Delete button Delete without confirmation (except forthe Brushes palette)
Shft + Enter Apply value and keep text box active
Ctrl-click channel, layer, or path thumbnail. Load as a selection in Photoshop
Ctrl + Shft-click channel, layer, or path thumbnail. Add to current selection
Ctrl + Alt-click channel, path, or layer thumbnail. Subtract from current selection
Ctrl + Shft + Alt-click channel, path, or layer thumbnail. Intersect with current selection
Tab Show/Hide all palettes
Shft + Tab Show/Hide all palettes except the toolbox andoptions bar
Select tool and press Enter Highlight options bar
Shft + Up Arrow/Down Arrow Increase/decrease units by 10 in a pop-up menu

Keys for using the Actions palette
Alt-click the check mark next to a cmnd. Turn command on and all others off, or turns all commands on
Alt-click Turn current modal control on and toggle all other modal controls
Alt double-click action set Change action set options in Photoshop actions pallete
Double-click set or actions Display Options dialog box
Ctrl + double-click an action Play entire action
Alt-click the triangle Collapse/expand all components of an action
Ctrl-click the Play button Play a command
Alt-click the New Action button Create new action and begin recording without confirmation
Shft-click the action/cmnd Select contiguous items of the same kind
Ctrl-click the action/cmnd Select discontiguous items of the same kind

Keys for using the Animation palette
Shft-click second frame. Select/deselect multiple contiguous frames
Ctrl-click multiple frames. Select/deselect multiple discontiguous frames in Photoshop Animation pallete
Alt + Paste Frames cmnd from the Palette pop*'up menu Paste using previous settings without displayingthe dialog box

Keys for using the Animation palette Timeline Mode (Photoshop Extended Only)
Spacebar Start playing the timeline or Animation palette
Alt + click the current-time display Switch between timecode and frame numbers (current time view).
(Alt + click the current-time display in the upper-left corner of the timeline).
Alt + click Expand and collapse list of layers
Hold down the Shft key when clicking the Next/Previous Frame buttons (on either side of the Play bu Jump to the next/previous whole second in timeline (during playback)
Hold down the Shft key while dragging the current time. Increase playback speed in Photoshop Animation palette (Timeline mode)
Hold down the Ctrl key while dragging the current time. Decrease playback speed
Shft-drag Snap an object (keyframe, the current time, layer in point, and so on) to the nearest object in timeline
Alt-drag (first or last keyframe in the selection) Scale (evenly distribute to condensed or extended length) a selected group of multiple keyframes

Keys for using the Clone Source
Alt + Shft Show Clone Source (overlays image)
Alt + Shft + arrow keys Nudge Clone Source
Alt + Shft + < or > Rotate Clone Source
Alt + Shft + [ or ] Scale (increase or reduce size) Clone Source

Keys for using the Brushes palette
Alt-click brush Delete brush
Double-click brush Rename brush
[ or ] Decrease/increase brush size
Shft + [ or ] Decrease/increase brush softness/hardness in 25% increments
, (comma) or . (period) Select previous/next brush size
Shft + , (comma) or . (period) Select first/last brush
Caps Lock Display precise cross hair for brushes
Shft Alt P Toggle airbrush option in Photoshop brushes palette

Keys for using the Channels palette
Alt-click button Set options for Save Selection as Channel button
Ctrl-click Create New Channel button Create a new spot channel in Photoshop Channels palette
Shft-click color channel Select/deselect multiple color-channel selection
Shft-click alpha channel Select/deselect alpha channel and show/hide as a rubylith overlay
Double-click alpha or spot channel thumbnail Display channel options
~ (tilde) Display composite

Keys for using the Color palette
Alt-click color in color bar Select background color
Right-click color bar Display Color Bar menu in Photoshop Color palette
Shft-click color bar Cycle through color choices

Keys for using the History palette
Alt + New Snapshot Create a new snapshot
Double-click snapshot name Rename snapshot
Ctrl + Shft + Z Step forward through image states
Ctrl Alt Z Step backward through image states in Photoshop History palette
Alt-click the image state Duplicate any image state, except the current state
Alt + Clear History (in History palette pop up men Permanently clear history (no Undo)

Keys for using the Info palette
Click eyedropper icon Change color readout modes
Click cross-hair icon Change measurement units

Keys for using the Layer Comps palette
Alt-click Create New Layer Comp button Create new layer comp + box
Double-click layer comp Open Layer Comp Options dialog box
Double-click layer comp name Rename inline
Shft-click Select/deselect multiple contiguous layer comps
Ctrl-click Select/deselect multiple discontiguous layer comps

Keys for using the Layers palette
Ctrl-click layer thumbnail Load layer transparency as a selection
Ctrl-click filter mask thumbnail Load filter mask as a selection
Ctrl G Group layers in Photoshop Layers palette
Ctrl + Shft + G Ungroup layers
Ctrl + Alt + G Create/release clipping mask
Ctrl + Alt + A Select all layers
Ctrl + Shft + E Merge visible layers
Alt-click New Layer button Create new empty layer with dialog box
Ctrl-click New Layer button Create new layer below target layer
Alt . (period) Select top layer in Photoshop
Alt + , (comma) Select bottom layer
Shft + Alt + [ or ] Add to layer selection in Layers palette
Alt + [ or ] Select next layer down/up
Ctrl + [ or ] Move target layer down/up
Ctrl + Shft + Alt + E Merge a copy of all visible layers into target layer
Ctrl + E Merge down
Ctrl + Shft + [ or ] Move layer to bottom or top
Alt + Merge Down cmnd from the Palette pop*'up menu Copy current layer to layer below in Photoshop
Alt + Merge Visible cmnd from the Palette pop*'up menu Merge all visible layers to a new layer above the currently selected layer
Right-click the eye icon Show/hide this layer/layer group only or all layers/layer groups
Alt-click the eye icon Show/hide all other currently visible layers
/ (forward slash) Toggle lock transparency for target layer, or last applied lock
Double-click layer effect/style Edit layer effect/style, options
Alt-double-click layer effect/style Hide layer effect/style
Double-click layer Edit layer style
Shft-click vector mask thumbnail Disable/enable vector mask in Photoshop
Double-click layer mask thumbnail Open Layer Mask Display Options dialog box
Shft-click layer mask thumbnail Toggle layer mask on/off
Shft-click filter mask thumbnail Toggle filter mask on/off
Alt-click layer mask thumbnail Toggle between layer mask/composite image
Alt-click filter mask thumbnail Toggle between filter mask/composite image
\ (backslash), or Shft + Alt-click Toggle rubylith mode for layer mask on/off
Double-click type layer thumbnail Select all type; temporarily select type tool
Alt-click the line dividing two layers Create a clipping mask
Double-click the layer name Rename layer
Double-click the filter effect Edit filter settings
Double-click the Filter Blending icon Edit the Filter Blending options
Ctrl-click New Layer Set button Create new layer set below current layer/layer set
Alt-click New Layer Set button Create new layer set with dialog box
Alt-click Add Layer Mask button Create layer mask that hides all/selection
Ctrl-click Add Layer Mask button Create vector mask that reveals all/selection
Ctrl + Alt-click Add Layer Mask button Create vector mask that hides all/selection
Right-click layer group or double-click group Display layer group properties
Shft-click Select/deselect multiple contiguous layers
Ctrl-click Select/deselect multiple discontiguous layers

Keys for using the Paths palette
Ctrl + Shft-click pathname Add path to selection
Ctrl + Alt-click pathname Subtract a path from selection
Ctrl + Shft + Alt-click pathname Retain intersection of path as a selection
Ctrl + Shft + H Hide path
Alt-click button Set options for Fill Path with Foreground Color button, Stroke Path with Brush button, Load Path as a Selection button, Make Work Path from Selection button, and Create New Path button

Keys for using the Swatches palette
Click in empty area of palette Create new swatch from foreground color
Ctrl-click swatch Select background color
Alt-click swatch Delete color

Keys for using Measurement (Photoshop Extended Only)
Shft + Ctrl + M Record a measurement
Ctrl + D Deselects all measurements
Ctrl + A Selects all measurements
Shft + Ctrl + H Hide/show all measurements
Backspace Removes a measurement
Arrow keys Nudge the measurement
Shft arrow keys Nudge the measurement in increments in Photoshop
Left/right arrow key Extend/shorten selected measurement
Shft + left/right arrow key Extend/shorten selected measurement in increments
Ctrl + arrow key Rotate selected measurement
Shft + Ctrl + arrow key Rotate selected measurement in increments

Keys for using 3D tools (Photoshop Extended)
O Enable 3D object tools
C Enable 3D camera tools
Shft Constrain 3D object tool/3D camera tool to a single direction of movement in Photoshop 3D tools