You can view, navigate, and print layered content in PDFs created from applications such as InDesign, AutoCAD, and Visio.
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You can control the display of layers using the default and initial state settings. For example, you can hide a layer containing a copyright notice whenever a document is displayed onscreen, while ensuring that the layer always prints.
In Acrobat Pro, you can rename, flatten, and merge layers, change the properties of layers, and add actions to layers. You can also rearrange layers, import layers from image files and other PDFs, and lock layers to prevent them from being hidden.
Acrobat Pro does not allow you to author layers that change visibility according to the zoom level. However, you can highlight a portion of a layer that is especially important by creating a bookmark that magnifies or hides the layer using page actions. You can also add links that let users click a visible or invisible link to navigate to or zoom in on a layer.
To retain layers when you convert InDesign CS documents to PDF in Acrobat Pro, make sure that Compatibility is set to Acrobat 6.0 (PDF 1.5) or higher. Additionally, make sure that Create Acrobat Layers is selected in the Export Adobe PDF dialog box.
Informationcan be stored on different layers of a PDF. The layers that appearin the PDF are based on the layers created in the original application.Use the Layers panel to examine layers and show or hide the contentassociated with each layer. Items on locked layers cannot be hidden.
Somelayers may be organized into nested groups with a parent layer.Other layers may be in groups with no parent layer.
Note:
A lock icon in the Layers panel indicates that a layer is for information only. Locked layers can be created from AutoCAD and Visio files. In Acrobat Standard, the visibility of a locked layer cannot be changed. In Acrobat Pro, use the Layer Properties dialog box to change the visibility of a locked layer.
A. Eye icon indicates a displayed layer B. Lockedlayer C. Hidden layer
- Choose View > Show/Hide> Navigation Panes > Layers.
- To hide a layer, click the eye icon. To show a hiddenlayer, click the empty box. (A layer is visible when the eye iconis present, and hidden when the eye icon is absent. This settingtemporarily overrides the settings in the Layer Properties dialogbox.)Note:In a nested layer group, if the parent layer is hidden,the nested layers are automatically hidden as well. If the parentlayer is visible, nested layers can be made visible or hidden.
- From the options menu , chooseone of the following:Shows every layer across every page of the document.Shows layers only on the currently visible pages.Resets layers to their default state.Displays layers according to the Print settings in the LayerProperties dialog box (Prints When Visible, NeverPrints, Always Prints).Displays layers according to the Export settings in the LayerProperties dialog box (Exports When Visible, NeverExports, Always Exports).Displays all layers. This option affects all optional content in the PDF, even layers that are not listed in the Layers panel. All layers are visible, regardless of the settings in the Layer Properties dialog box. You cannot change layer visibility using the eye icon until you deselect this command. When you edit layer properties in the Layer Properties dialog box, changes are not effective until you choose Reset To Initial Visibility in the options menu. (Changes to the layer name are the exception; they are effective immediately.)Note:You cannot save the view of a layered PDF by using the eye icon in the Layers panel to show and hide layers. When you save the file, the visibility of the layers automatically reverts to the initial visibility state.To save a different view of a layered PDF in Acrobat Pro, you must change the default state of the layers in the Layer Properties dialog box.
You can combine the default state setting, the visibility setting, and the print setting to control when a layer is visible and when it prints. If a layer contains a watermark, for example, you may want the layer not to show onscreen but always to print and always to export to other applications. In this case, you can set the default state to on, the initial visibility to never visible (the image doesn’t show onscreen), and the initial print and initial export states to always print and always export. The layer need not be listed in the Layers panel, since all the state changes are handled automatically.
Note:
The settings in the LayerProperties dialog box take effect only if Allow Layer StateTo Be Set By User Information is selected in the Documents preferences.If it is not selected, Layer Properties dialogbox settings, other than Layer Name and Default State, are ignored.
- Select a layer, and choose Layer Properties fromthe options menu .
- In the Layer Properties dialogbox, edit the layer name or any of the following properties, andthen click OK:Select View to allow the layer to be turned on or off,or select Reference to keep the layer on at all times and permitediting of the properties. When the Reference Intent optionis selected, the layer appears in italics.Defines the initial visibility state of the layer whena document is first opened or when the initial visibility is reset.The eye icons for layers are initially shown or hidden based onthis value. For example, if this value is set to off, the eye iconfor a layer is hidden when the document is first opened or when ResetTo Initial Visibility is chosen from the options menu.Defines the onscreen visibility of the PDF layer. You can show a layer when the document is opened, you can hide a layer when the document is opened, or you can let the default state determine whether a layer is shown or hidden when the document is opened.Determineswhether a layer will print.Determineswhether the layer appears in the resulting document when the PDFfile is exported to an application or file format that supportslayers.Any additional properties that the creator of thelayered PDF has associated with a specific layer are shown in thebox at the bottom of the Layer Properties dialog box.
You can reorder individual layers in the Layers pane. This action is useful if you want to change the order of layers in the list, or move a layer from one layer group to another.
Note:
You cannot reorder locked layers, and you cannot reorder layers in nested layer groups.
- Position the cursor to the left of the layer name, thenhold down the Alt key while you drag the layer to the new location.
Youcan add links and destinations to layers, allowing you to changethe view of a document when the user clicks a bookmark or link.
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Note:
Ingeneral, changes to layer visibility made using the eye icon inthe Layers panel are not recorded in the Navigation toolbar.
- Setthe required layer properties, visibility, and magnification levelfor the target PDF layer in the document pane.
- Click the Bookmarks button, and choose NewBookmark from the options menu .
- Select the new bookmark, and choose Properties from theoptions menu .
- In the Bookmark Properties dialog box, click the Actionstab.
- For Select Action, choose Set Layer Visibility,click Add, and then click OK.
- Select the bookmark label in the Bookmarks panel, andname the bookmark.
Associate layer visibility witha link destination
- Set the required layer properties for thedestination in the document pane.
- Choose View > Show/Hide > NavigationPanes > Destinations.The Destinations pane appears in a floating panel.You can add it to the other panels by dragging it to the navigationpane. If the panel is collapsed, click the Destinations button toexpand it.
- Choose New Destination from theoptions menu , andname the destination.
- Select the Link tool , anddrag in the document pane to create a link. (Because content isadded to all layers, it doesn’t matter that you are apparently creatingthe link on the target layer. The link works from any layer.)
- In the Create Link dialog box,select Custom Link and click Next.
- Click the Appearance tab in the Link Properties dialogbox, and set the appearance of the link.
- Click the Actions tab in the Link Properties dialogbox, choose Set Layer Visibility, and clickAdd.
- You can test the link by changing the layer settings, selectingthe Hand tool, and clicking the link.
Youcan import layers from a PDF or image file into a target PDF. Supported imagefile formats are BMP, GIF, JPEG, JPEG 2000, PCX, PNG, and TIFF.
- In the Import As Layer dialog box, click Browse and locatethe file to import. If the source file is a multipage document,enter the page number you want to import in Page Number.If the target file is a multipage document, specify the Target PageNumber in the Preview section of the dialog box.