Photoshop

Selecting
Draw Marquee from Center Alt-Marquee
Add to a Selection Shift
Subtract from a Selection Alt
Intersection with a Selection Shift-Alt
Make Copy of Selection w/Move tool Alt-Drag Selection
Make Copy of Selection when not in the Move tool Ctrl-Alt-Drag Selection
Move Selection (in 1-pixel Increments) Arrow Keys
Move Selection (in 10-pixel Increments) Shift-Arrow Keys
Select all Opaque Pixels on Layer Ctrl-click on Layer Thumbnail (in the Layers panel)
Restore Last Selection Ctrl-Shift-D
Feather Selection Shift-F6
Move Marquee while drawing selection Hold Space while drawing a marquee
Viewing
Fit on Screen Double-click on Hand tool or Ctrl-0
100% View Level (Actual Pixels) Double-Click on Zoom Tool or Ctrl-Alt-0
Zoom in Ctrl-Space-Click or Ctrl-Plus(+)
Zoom out Alt-Space-Click or Ctrl-Minus(–)
Hide all tools and panels Tab
Hide all panels except Toolbox and Options bar Shift-Tab
Rotate through full-screen modes F
Scroll image left or right in the window Ctrl-Shift-Page Up/Down
Jump/Zoom to part of Image Ctrl-drag in Navigator panel
Toggles layer mask on/off as rubylith \
Layer Shortcuts
Create new layer Ctrl-Shift-N
Select non-contiguous layers Ctrl-Click layers
Select contiguous layers Click one layer, then Shift-Click another layer
Delete Layer Delete key (while in the Move tool)
View contents of the layer mask Alt-Click layer mask icon
Temporarily turn off layer mask Shift-Click layer mask icon
Clone layer as you move it Alt-Drag
Find/Select the layer containing the object Right-Click on the object w/Move tool
Change layer opacity Number pad keys (w/Move tool selected)
Cycle down or up through blend modes Shift-Plus(+) or Minus(–)
Change to a specific blend mode (w/Move tool) Shift-Alt-letter (ie: N=Normal, M=Multiply. etc.)
Switch to the layer below/above the current layer Alt-[ or Alt-]
Move layer below/above the current layer Ctrl-[ or Ctrl-]
Type Shortcuts
Select all text on layer Double-Click on T thumbnail in the Layers panel
Increase/Decrease size of selected text by 2 pts Ctrl-Shift->/<
Increase/Decrease size of selected text by 10 pts Ctrl-Shift-Alt->/<
Increase/Decrease kerning/tracking Alt-Right/Left Arrow
Align text left/center/right Ctrl-Shift-L/C/R
Painting
Fill the selection with background-color Ctrl-Backspace
Fill the selection with the foreground color Alt-Backspace
Fill the selection with foreground color using Lock Transparent Pixels Shift-Alt-Backspace
Fill the selection with source state in History panel Ctrl-Alt-Backspace
Display Fill dialog box Shift-Backspace
Sample as background-color Alt-Click w/Eyedropper tool
To get the Move tool While in any painting/editing tool-hold Ctrl
To get Eyedropper with Paint tools Alt
Change paint opacity (with Airbrush OFF) Number keys
Change paint opacity (with Airbrush ON) Shift-Number keys
Change Airbrush flow (with Airbrush ON) Number keys
Change Airbrush flow (with Airbrush OFF) Shift-Number keys
Cross-Hair Cursor Any painting/editing tool-turn Caps Lock on
Decrease/Increase Brush Size [ or ]
Decrease/Increase Hardness of Brush Shift-[ or Shift-]
Switch between preset Brushes < or >
Open Brushes pop-up panel Right-Click in the Image window
Erase to History panel’s source state Alt-Eraser
Cycle down or up through blend modes Shift-Plus(+) or Minus(–)
Change to a specific blend mode Shift-Alt-letter (ie: N=Normal, M=Multiply, etc.)
Create a fixed color target from within a dialog box Shift-Click in the image window
Delete fixed color target Alt-Click on target with Color Sampler tool
Create a new spot-color channel from the current selection Ctrl-Click on the New Channel button in the Channels panel
Pen Tool Shortcuts
To get Direct Selection tool while using Pen Ctrl
Switch between Add-Anchor and Delete-Anchor Point tools Alt
Switch from Path Selection tool to Convert Point tool when the pointer is over the anchor point Ctrl-Alt
To Select a whole path w/Direct Selection tool Alt-click
Convert path to a selection Ctrl-click on pathname (in Paths panel)
Panel Shortcuts
Show/Hide Brushes panel F5
Show/Hide Color panel F6
Show/Hide Layers panel F7
Show/Hide Info panel F8
Show/Hide Actions panel Alt-F9
Open Adobe Bridge Ctrl-Alt-O
Other Shortcuts
Switch between open documents Ctrl-Tab
Undo or Redo operations beyond the last one Ctrl-Alt-Z/Ctrl-Shift-Z
Apply the Last Filter Ctrl-F
Opens Last Filter Dialog Box Ctrl-Alt-F
Hand Tool Spacebar
Reset Dialog Box Hold Alt, Cancel turns into Reset Button, Click it
Increase/Decrease value (in any option field) by 1 unit Up/Down Arrow
Increase/Decrease value (in any option field) by 10 units Shift-Up/Down Arrow
Replay the last Transformation Ctrl-Shift-T
Measure Angle between Lines (Protractor Function) After ruler is drawn, Alt-Drag end of the line with Ruler Tool
Move Crop Marquee while creating Hold Space while drawing
Snap Guide to Ruler ticks Hold Shift while dragging
Highlight Fields in the Options bar (n/a for all tools) Enter
Don’t Snap object edge while moving Hold Control while dragging
Tools
V Move
M Marquee tools
L Lasso tools
W Quick Selection, Magic Wand
C Crop and Slice Tools
I Eyedropper, Color Sampler, Ruler, Note, Count
J Spot Healing Brush, Healing Brush, Patch, Red Eye
B Brush, Pencil, Color Replacement, Mixer Brush
S Clone Stamp, Pattern Stamp
Y History Brush, Art History Brush
E Eraser tools
G Gradient, Paint Bucket
O Dodge, Burn, Sponge
P Pen tools
T Type tools
A Path Selection, Direct Selection
U Rectangle, Rounded Rectangle, Ellipse, Polygon, Line, Custom Shape
K 3D Tools
N 3D Camera Tools
H Hand
R Rotate View
Z Zoom
D Default colors
X Switch Foreground and Background colors
Q Quick Mask Mode