
- Photoshop User Guide
- Introduction to Photoshop
- Photoshop and other Adobe products and services
- Work with Illustrator artwork in Photoshop
- Work with Photoshop files in InDesign
- Substance 3D Materials for Photoshop
- Photoshop and Adobe Stock
- Use the Capture in-app extension in Photoshop
- Creative Cloud Libraries
- Creative Cloud Libraries in Photoshop
- Use the Touch Bar with Photoshop
- Grid and guides
- Creating actions
- Undo and history
- Photoshop on the iPad
- Photoshop on the iPad | Common questions
- Get to know the workspace
- System requirements | Photoshop on the iPad
- Create, open, and export documents
- Add photos
- Work with layers
- Draw and paint with brushes
- Make selections and add masks
- Retouch your composites
- Work with adjustment layers
- Adjust the tonality of your composite with Curves
- Apply transform operations
- Crop and rotate your composites
- Rotate, pan, zoom, and reset the canvas
- Work with Type layers
- Work with Photoshop and Lightroom
- Get missing fonts in Photoshop on the iPad
- Japanese Text in Photoshop on the iPad
- Manage app settings
- Touch shortcuts and gestures
- Keyboard shortcuts
- Edit your image size
- Livestream as you create in Photoshop on the iPad
- Correct imperfections with the Healing Brush
- Create brushes in Capture and use them in Photoshop
- Work with Camera Raw files
- Create and work with Smart Objects
- Adjust exposure in your images with Dodge and Burn
- Photoshop on the web beta
- Common questions | Photoshop on the web beta
- Introduction to the workspace
- System requirements | Photoshop on the web beta
- Keyboard shortcuts | Photoshop on the web beta
- Supported file types | Photoshop on the web beta
- Open and work with cloud documents
- Collaborate with stakeholders
- Apply limited edits to your cloud documents
- Cloud documents
- Photoshop cloud documents | Common questions
- Photoshop cloud documents | Workflow questions
- Manage and work with cloud documents in Photoshop
- Upgrade cloud storage for Photoshop
- Unable to create or save a cloud document
- Solve Photoshop cloud document errors
- Collect cloud document sync logs
- Share access and edit your cloud documents
- Share files and comment in-app
- Workspace
- Workspace basics
- Learn faster with the Photoshop Discover Panel
- Create documents
- Use the Touch Bar with Photoshop
- Tool galleries
- Performance preferences
- Use tools
- Touch gestures
- Touch capabilities and customizable workspaces
- Technology previews
- Metadata and notes
- Default keyboard shortcuts
- Touch capabilities and customizable workspaces
- Place Photoshop images in other applications
- Preferences
- Default keyboard shortcuts
- Rulers
- Show or hide non-printing Extras
- Specify columns for an image
- Undo and history
- Panels and menus
- Place files
- Position elements with snapping
- Position with the Ruler tool
- Presets
- Customize keyboard shortcuts
- Grid and guides
- Web, screen, and app design
- Image and color basics
- How to resize images
- Work with raster and vector images
- Image size and resolution
- Acquire images from cameras and scanners
- Create, open, and import images
- View images
- Invalid JPEG Marker error | Opening images
- Viewing multiple images
- Customize color pickers and swatches
- High dynamic range images
- Match colors in your image
- Convert between color modes
- Color modes
- Erase parts of an image
- Blending modes
- Choose colors
- Customize indexed color tables
- Image information
- Distort filters are unavailable
- About color
- Color and monochrome adjustments using channels
- Choose colors in the Color and Swatches panels
- Sample
- Color mode or Image mode
- Color cast
- Add a conditional mode change to an action
- Add swatches from HTML CSS and SVG
- Bit depth and preferences
- Layers
- Layer basics
- Nondestructive editing
- Create and manage layers and groups
- Select, group, and link layers
- Place images into frames
- Layer opacity and blending
- Mask layers
- Apply Smart Filters
- Layer comps
- Move, stack, and lock layers
- Mask layers with vector masks
- Manage layers and groups
- Layer effects and styles
- Edit layer masks
- Extract assets
- Reveal layers with clipping masks
- Generate image assets from layers
- Work with Smart Objects
- Blending modes
- Combine multiple images into a group portrait
- Combine images with Auto-Blend Layers
- Align and distribute layers
- Copy CSS from layers
- Load selections from a layer or layer mask's boundaries
- Knockout to reveal content from other layers
- Layer
- Flattening
- Composite
- Background
- Selections
- Select and Mask workspace
- Make quick selections
- Get started with selections
- Select with the marquee tools
- Select with the lasso tools
- Select a color range in an image
- Adjust pixel selections
- Convert between paths and selection borders
- Channel basics
- Move, copy, and delete selected pixels
- Create a temporary quick mask
- Save selections and alpha channel masks
- Select the image areas in focus
- Duplicate, split, and merge channels
- Channel calculations
- Selection
- Bounding box
- Image adjustments
- Perspective warp
- Reduce camera shake blurring
- Healing brush examples
- Export color lookup tables
- Adjust image sharpness and blur
- Understand color adjustments
- Apply a Brightness/Contrast adjustment
- Adjust shadow and highlight detail
- Levels adjustment
- Adjust hue and saturation
- Adjust vibrance
- Adjust color saturation in image areas
- Make quick tonal adjustments
- Apply special color effects to images
- Enhance your image with color balance adjustments
- High dynamic range images
- View histograms and pixel values
- Match colors in your image
- How to crop and straighten photos
- Convert a color image to black and white
- Adjustment and fill layers
- Curves adjustment
- Blending modes
- Target images for press
- Adjust color and tone with Levels and Curves eyedroppers
- Adjust HDR exposure and toning
- Filter
- Blur
- Dodge or burn image areas
- Make selective color adjustments
- Replace object colors
- Adobe Camera Raw
- Camera Raw system requirements
- What's new in Camera Raw
- Introduction to Camera Raw
- Create panoramas
- Supported lenses
- Vignette, grain, and dehaze effects in Camera Raw
- Default keyboard shortcuts
- Automatic perspective correction in Camera Raw
- How to make non-destructive edits in Camera Raw
- Radial Filter in Camera Raw
- Manage Camera Raw settings
- Open, process, and save images in Camera Raw
- Repair images with the Enhanced Spot Removal tool in Camera Raw
- Rotate, crop, and adjust images
- Adjust color rendering in Camera Raw
- Feature summary | Adobe Camera Raw | 2018 releases
- New features summary
- Process versions in Camera Raw
- Make local adjustments in Camera Raw
- Image repair and restoration
- Image transformations
- Drawing and painting
- Paint symmetrical patterns
- Draw rectangles and modify stroke options
- About drawing
- Draw and edit shapes
- Painting tools
- Create and modify brushes
- Blending modes
- Add color to paths
- Edit paths
- Paint with the Mixer Brush
- Brush presets
- Gradients
- Gradient interpolation
- Fill and stroke selections, layers, and paths
- Draw with the Pen tools
- Create patterns
- Generate a pattern using the Pattern Maker
- Manage paths
- Manage pattern libraries and presets
- Draw or paint with a graphics tablet
- Create textured brushes
- Add dynamic elements to brushes
- Gradient
- Paint stylized strokes with the Art History Brush
- Paint with a pattern
- Sync presets on multiple devices
- Text
- Add and edit the text
- Unified Text Engine
- Work with OpenType SVG fonts
- Format characters
- Format paragraphs
- How to create type effects
- Edit text
- Line and character spacing
- Arabic and Hebrew type
- Fonts
- Troubleshoot fonts
- Asian type
- Create type
- Text Engine error using Type tool in Photoshop | Windows 8
- Add and edit the text
- Video and animation
- Filters and effects
- Saving and exporting
- Printing
- Automation
- Color Management
- Content authenticity
- 3D and technical imaging
- Photoshop 3D | Common questions around discontinued 3D features
- Creative Cloud 3D Animation (Preview)
- Print 3D objects
- 3D painting
- 3D panel enhancements | Photoshop
- Essential 3D concepts and tools
- 3D rendering and saving
- Create 3D objects and animations
- Image stacks
- 3D workflow
- Measurement
- DICOM files
- Photoshop and MATLAB
- Count objects in an image
- Combine and convert 3D objects
- 3D texture editing
- Adjust HDR exposure and toning
- 3D panel settings
Slices divide an image into smaller images that are reassembled on a web page using an HTML table or CSS layers. By dividing the image, you can assign different URL links to create page navigation, or optimize each part of an image using its own optimization settings.
You export and optimize a sliced image using the Save For Web command. Photoshop saves each slice as a separate file and generates the HTML or CSS code needed to display the sliced image.

When you work with slices, keep these basics in mind:
You can create a slice by using the Slice tool or by creating layer-based slices.
After you create a slice, you can select it using the Slice Select tool
and then move, resize, or align it with other slices.
You can set options for each slice—such as slice type, name, and URL—in the Slice Options dialog box.
You can optimize each slice using different optimization settings in the Save For Web dialog box.
Slice types
Slices are categorized by their content type (Table, Image, No Image) and by the way they are created (user, layer-based, auto).
Slices created with the Slice tool are called user slices; slices created from a layer are called layer-based slices. When you create a new user slice or layer-based slice, additional auto slices are generated to account for the remaining areas of the image. In other words, auto slices fill the space in the image that is not defined by user slices or layer-based slices. Auto slices are regenerated every time you add or edit user slices or layer‑based slices. You can convert auto slices to user slices.
User slices, layer-based slices, and auto slices look different—user slices and layer-based slices are defined by a solid line, whereas auto slices are defined by a dotted line. In addition, user slices and layer-based slices display a distinct icon. You can choose to show or hide auto slices, which can make your work with user-slices and layer-based slices easier to view.
A subslice is a type of auto slice that is generated when you create overlapping slices. Subslices indicate how the image is divided when you save the optimized file. Although subslices are numbered and display a slice symbol, you cannot select or edit them separately from the underlying slice. Subslices are regenerated every time you arrange the stacking order of slices.
Slices are created using different methods:
Auto slices are automatically generated.
User slices are created with the Slice tool.
Layer-based slices are created with the Layers panel.
Slice a web page
You can use the slice tool to draw slice lines directly on an image, or design your graphic using layers, and then create slices based on the layers.
Create a slice with the Slice tool
-
Select the Slice tool
. (Press the C key to cycle through tools grouped with the Crop too.)
Any existing slices automatically appear in the document window.
-
Choose a style setting in the options bar:
Normal
Determines slice proportions as you drag.
Fixed Aspect Ratio
Sets a height-to-width ratio. Enter whole numbers or decimals for the aspect ratio. For example, to create a slice twice as wide as it is high, enter 2 for the width and 1 for the height.
Fixed Size
Specifies the slice's height and width. Enter pixel values in whole numbers.
-
Drag over the area where you want to create a slice. Shift-drag to constrain the slice to a square. Alt-drag (Windows) or Option-drag (Mac OS) to draw from the center. Use View > Snap To to align a new slice to a guide or another slice in the image. See Move, resize, and snap user slices.
Create slices from guides
-
Add guides to an image.
-
Select the Slice tool, and click Slices From Guides in the options bar.
When you create slices from guides, any existing slices are deleted.
Create a slice from a layer
A layer-based slice encompasses all the pixel data in the layer. If you move the layer or edit the layer's content, the slice area automatically adjusts to include the new pixels.

Layer-based slices are less flexible than user slices; however, you can convert ("promote") a layer-based slice to a user slice. See Convert auto and layer-based slices to user slices.
-
Select a layer in the Layers panel.
-
Choose Layer > New Layer-based Slice.
Don't use a layer-based slice when you plan to move the layer over a large area of the image during an animation, because the slice dimension may exceed a useful size.
Convert auto and layer-based slices to user slices
A layer-based slice is tied to the pixel content of a layer, so the only way to move, combine, divide, resize, and align it is to edit the layer—unless you convert it to a user slice.
All auto slices in an image are linked and share the same optimization settings. If you want to set different optimization settings for an auto slice, you need to promote it to a user slice.
-
Using the Slice Select tool
, select one or more slices to convert.
-
Click Promote in the options bar.
View slices and slice options
You can view slices in Photoshop and the Save For Web dialog box. The following characteristics can help you identify and differentiate between slices:
Slice lines
Define the boundary of the slice. Solid lines indicate that the slice is a user slice or layer-based slice; dotted lines indicate that the slice is an auto slice.
Slice colors
Differentiate user slices and layer‑based slices from auto slices. By default, user slices and layer-based slices have blue symbols, and auto slices have gray symbols.
In addition, the Save For Web dialog box uses color adjustments to dim unselected slices. These adjustments are for display purposes only and do not affect the color of the final image. By default, the color adjustment for auto slices is twice the amount of that for user slices.
Slice numbers
Slices
are numbered from
left to right and top to bottom, beginning in the upper-left corner
of the image. If you change the arrangement or total number of slices,
slice numbers are updated to reflect the new order.
Slice badges
The following badges, or icons, indicate certain conditions.

User slice has Image content.

User slice has No Image content.

Slice is layer-based.
Show or hide slice boundaries
-
Choose View > Show > Slices. To hide and show slices along with other items, use the Extras command. See Show or hide Extras.
Show or hide auto slices
-
Do one of the following:
Select the Slice Select tool
, and click Show Auto Slices or Hide Auto Slices in the options bar.
Choose View > Show > Slices. Auto slices appear with the rest of your slices.
Show or hide slice numbers
-
Do one of the following:
In Windows, choose Edit > Preferences > Guides, Grid & Slices.
In Mac OS, choose Photoshop > Preferences > Guides, Grid & Slices.
-
Under Slices, click Show Slice Numbers.
Change the color of slice lines
-
In Windows, choose Edit > Preferences > Guides, Grid & Slices; in Mac OS, choose Photoshop > Preferences > Guides, Grid & Slices.
-
Under Slice Lines, choose a color from the Line Color menu.
After the color change, selected slice lines are automatically displayed in a contrasting color.
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