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Save Settings
• Automatically Save Document Changes To Temporary File Every _ Minutes: Determines how often Acrobat
automatically saves changes to an open document.
• Save As Optimizes For Fast Web View: Restructures a PDF document for page-at-a-time downloading from web
servers.
• Always reduce size for files more than 10MB: Reduces the size of the PDF automatically if the file size is greater
than 10MB.
PDF/A View Mode
• View Documents In PDF/A ModeSpecifies when to use this viewing mode: Never, or Only For PDF/A Documents.
Hidden Information
Searches the PDF for items that may not be apparent, such as metadata, file attachments, comments, and hidden text
and layers. The search results appear in a dialog box, and you can remove any type of item that appears there.
• Remove Hidden Information When Closing Document (Not selected by default.)
• Remove Hidden Information When Sending Document By Email (Not selected by default.)
Redaction
• Adjust Filename When Saving Applied Redaction Marks: Specifies a prefix or suffix to use when saving a file to
which redaction marks have been applied.
• Choose Localization For Search and Redact Patterns: Specifies which installed language version of Acrobat to use
for the patterns. For example, if you installed both the English and German versions, then you can choose either
language for the patterns. The Patterns option appears in the Search and Redaction dialog boxes.

Full Screen preferences

Full-Screen Setup
• Current Document Only: Specifies whether the display is limited to a single PDF.
• Fill Screen With One Page At A Time: Sets the page view to the maximum screen coverage by a single page.
• Alert When Document Requests Full Screen: Displays a message before going into Full-Screen mode. Selecting
this option overrides a previous selection of Do Not Show This Message Again in that message.
• Which Monitor To Use: Specifies the monitor on which full-screen display appears (for users with multiple-
monitor configurations).
Full-Screen Navigation
• Escape Key Exits: Lets you exit Full-Screen mode by pressing the Esc key. If this option is not selected, you can exit
by pressing Ctrl+L.
• Show Navigation Bar: Shows a minimal navigation toolbar regardless of the document settings.
• Left Click To Go Forward One Page; Right Click To Go Back One Page: Lets you page through an Adobe
PDF document by clicking the mouse. You can also page through a document by pressing Return, Shift-Return (to
go backward), or the arrow keys.
• Loop After Last Page: Lets you page through a PDF document continuously, returning to the first page after the
last. This option is typically used for setting up kiosk displays.
• Advance Every _ Seconds: Specifies whether to advance automatically from page to page every set number of
seconds. You can page through a document using the mouse or keyboard commands even if automatic paging is
selected.

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Full-Screen Appearance
• Background Color: Specifies the window’s background color in Full-Screen mode. You can select a color from the
color palette to customize the background color.
• Mouse Cursor: Specifies whether to show or hide the pointer when Full-Screen mode is in operation.
Full-Screen Transitions
• Disable All Page Transitions: Removes transition effects from presentations that you view in Full-Screen mode.
• Default Transition: Specifies the transition effect to display when you switch pages in Full-Screen mode and no
transition effect has been set for the document.
• Direction: Determines the flow of the selected default transition on the screen, such as Down, Left, Horizontal, and
so on. The available options vary according to the transition. If no directional options affect the selected default
transition, this option is not available.
• Navigation Controls Direction: Mimics the user’s progress through the presentation, such as transitioning from
top to bottom when the user proceeds to the next page and from bottom to top when the user backtracks to the
previous page. Available only for transitions with directional options.

General preferences
Basic Tools
• Use Single Key Accelerators To Access Tools: Enables you to select tools with a single keystroke. This option is
deselected by default.
• Create Links From URLs: Specifies whether links that weren’t created with Acrobat are automatically identified in
the PDF document and become clickable links.
• Make Hand Tool Select Text & Images: Enables the Hand tool to function as the Select tool when it hovers over
text in an Adobe PDF.
• Make Hand Tool Read Articles: Changes the appearance of the Hand tool pointer when over an article thread.
Upon the first click, the article zooms to fill the document pane horizontally; subsequent clicks follow the thread of
the article.
• Make Hand Tool Use Mouse-wheel Zooming: Changes the action of the mouse wheel from scrolling to zooming.
• Make Select Tool Select Images Before Text: Changes the order in which the Select tool selects.
• Show Quick actions on text selection: Display a quick action toolbar on text or image selection.
• Show Online Storage When Opening Files: Display the cloud storage in the file open dialog box.
• Show Online Storage When Saving Files: Display the cloud storage while saving the file.
• Open PDFs from last session on Acrobat launch: Reopen PDFs from the last session on launching Acrobat.
• Open Documents As New Tabs In The Same Window (requires relaunch): Groups multiple documents into tabs
when opened. You can also snap or pull out tabs as individual windows. To do this, select a tab and drag the
thumbnail that appears away from the toolbar, and then release the tab.
• Prompt Before Closing Multiple Tabs: Confirms from the user before closing Acrobat.
• Show Starred Files In Recent Tab: Displays the starred files as cards in Home view.
• Use Fixed Resolution For Snapshot Tool Images: Sets the resolution used to copy an image captured with the
Snapshot tool.

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• Enable PDF thumbnail preview in Windows Explorer: Select to display PDFs as thumbnail preview in Windows
Explorer.
• Touch Mode: Sets how Acrobat enters the Touch mode, if at all, for touch enabled devices. In Touch mode, Toolbar
buttons, panels, and menus shift apart slightly to accommodate selecting with your fingers. The Touch reading
mode optimizes viewing and supports most common gestures.
• Scale for screen resolution (restart required): Auto-detect screen resolution and scale the PDF for viewing, or
display the PDF as it is irrespective of the screen resolution.

Warnings
• Do Not Show Edit Warnings: Disables warning boxes that would normally appear when you delete items such as
links, pages, page thumbnails, and bookmarks.
• Reset All Warnings: Restores default settings for warnings.

Messages From Adobe

• Show Me Messages When I Launch Acrobat: Allows in-product marketing messages from Adobe to appear in
the Welcome Screen when you launch the application without a document open. Click a message to get information
about features, updates, or online services, or to open an element in the application, such as a task pane. Deselect
the option to prevent in-product marketing messages from appearing.
Note:
Transactional messages, which facilitate the Adobe Online Service, cannot be turned off.
Application Startup
• Use Only Certified Plug-Ins: Ensures that only Adobe-certified third-party plug-ins are loaded. The notation
Currently in Certified Mode indicates either Yes or No depending on its status.
• Check 2D Graphics Accelerator (Windows only): (Appears only if your computer hardware supports 2D graphics
acceleration.) When selected, allows hardware acceleration usage when the first document is opened. When
deselected, hardware acceleration usage starts after the first document is opened. This option can slow startup time,
so it is deselected by default.
Note:
This option is available only when the option Use 2D Graphics Acceleration in the Page Display preferences is selected.
• Select As Default PDF Handler (Windows only): Specifies which application, Reader or Acrobat, is used to open
PDFs. This setting applies if you have both Acrobat and Reader installed on your computer. In Windows 7 or earlier,
a browser uses this setting only if it is using the Adobe plug-in or add-on for viewing PDF files. In Windows 8, this
setting controls which application is the default PDF application for your system, including in your browser.
Windows 8 prompts you to allow this change before applying it to your system. Once set, Windows 8 also uses the
selected PDF application for tasks related to PDF files, such as previewing, displaying thumbnails, and providing file
information.
• Tell Me If Adobe Acrobat Is Not My Default PDF Application (Windows only): If Acrobat is not set as the default
PDF handler, a dialog prompts whether to make Adobe Acrobat the default PDF application whenever you launch
Acrobat.

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Page Display preferences

Default Layout And Zoom
• Page Layout: Sets the page layout used for scrolling when you first open a document. The default setting is
Automatic. The Page Layout setting in File > Properties > Initial View overrides this value.
• Zoom: Sets the magnification level for PDF documents when they are first opened. The default setting is Automatic.
The Magnification setting in File > Properties > Initial View overrides this value.
Note:
Two conditions can affect page layout and zoom. 1) Someone has already set an individual PDF to a different initial view
in File > Properties. 2) You have the option Restore Last View Settings When Reopening Documents selected in Edit >
Preferences > Document category.
Resolution
• Use System Setting: Uses the system settings for monitor resolution.
• Custom Resolution: Sets the monitor resolution.
Rendering
• Smooth Text: Specifies the type of text-smoothing to apply.
• Smooth Line Art: Applies smoothing to remove abrupt angles in lines.
• Smooth Images: Applies smoothing to minimize abrupt changes in images.
• Use Local Fonts: Specifies whether the application uses or ignores local fonts installed on your system. When
deselected, substitute fonts are used for any font not embedded in the PDF. If a font cannot be substituted, the text
appears as bullets and an error message appears.
• Enhance Thin Lines: When selected, clarifies thin lines in the display to make them more visible.
• Use Page Cache: Places the next page in a buffer before the current page is viewed to reduce the time required to
page through a document.
• Use 2D Graphics Acceleration (Windows only): (Appears only if your computer hardware supports 2D graphics
acceleration.) Speeds up zooming, scrolling, and redrawing of page content, and speeds the rendering and
manipulation of 2D PDF content. This option is selected by default.
Note:
If this option is not available in the Page Display preferences, you may need to update your GPU card driver to enable this
hardware feature. Contact your card vendor or computer manufacturer for an updated driver.
Page Content And Information
• Show Large Images: Displays large images. If your system is slow to display image-intensive pages, deselect this
option.
• Use Smooth Zooming (Windows only): When deselected, turns off animation effects, which improves
performance.
• Show Art, Trim, & Bleed Boxes: Displays any art, trim, or bleed boxes defined for a document.
• Show Transparency Grid: Displays the grid behind transparent objects.

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• Use Logical Page Numbers: Enables the Number Pages command for matching the position of the page in the PDF
to the number printed on the page. A page number, followed by the page position in parentheses, appears in the Page
Navigation toolbar and in the Go To Page and Print dialog boxes. For example, i (1 of 1) if the printed number of
the first page is i. If this option is not selected, pages are numbered with Arabic numbers starting at 1. Selecting this
option helps prevent unexpected behavior when clicking Back or Go Back in your web browser.
• Always Show Document Page Size: Displays the page measurements beside the horizontal scroll bar.
• Use Overprint Preview: Specifies whether Overprint Preview mode is on only for PDF/X files, never on, always
on, or set automatically. When set to Automatic, if a document contains overprints, then Overprint Preview mode
is activated. The Overprint Preview mode lets you see (onscreen) the effects of ink aliasing in the printed output.
For example, a printer or service provider could create an ink alias if a document contains two similar spot colors
and only one is required.
• Default Transparency Blending Color Space: Sets the default color space, Working RGB or Working CMYK, for
transparency blending.
Reference XObjects View Mode
• Show Reference XObject Targets: Specifies the type of documents in which reference XObjects can be viewed.
• Location Of Referenced Files (Optional): Specifies a location for the referenced documents.

Touch mode for tablet and mobile devices

Touch mode makes it easier to use Acrobat DC and Acrobat Reader DC on touch devices. Toolbar buttons, panels, and
menus shift apart slightly to accommodate selecting with your fingers. The Touch reading mode optimizes viewing and
supports most common gestures. Acrobat DC and Acrobat Reader DC automatically switch to Touch mode when on
a touch-enabled device. You can change the default preference setting for Touch mode.

Change Touch Mode preference

1 Choose Edit > Preferences (Windows) or Acrobat DC / Adobe Acrobat Reader DC > Preferences (Mac OS).
2 Under Categories, select General.
3 In Basic Tools, choose the desired default setting from the Touch Mode menu.

Change the PDF/A viewing mode

PDF/A is an ISO standard for long-term archiving and preservation of electronic documents. Documents you scan to
PDF are PDF/A-compliant. You can specify whether you want to view documents in this viewing mode.
When you open a PDF/A compliant document in PDF/A viewing mode, the document is opened in Read mode to
prevent modification. A message is displayed in the document message bar. You will be unable to make changes and
add annotations to the document. If you turn off PDF/A mode, you can edit the document.
1 In the Preferences dialog box under Categories, select Documents.
2 Choose an option for View Documents In PDF/A Mode: Never, or Only For PDF/A Documents.
You can switch in or out of PDF/A viewing mode by changing this preference setting.

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Display PDFs in Line Weights view

The Line Weights view displays lines with the weights defined in the PDF. When Line Weights view is off, it applies a
constant stroke width (1 pixel) to lines, regardless of zoom. When you print the document, the stroke prints at the true
width.
? Choose View > Show/Hide > Rulers & Grids > Line Weights. To turn off Line Weights view, choose View >
Show/Hide > Rulers & Grids > Line Weights again.
Note:
You cannot turn off Line Weights view when viewing PDFs within a web browser.

Show or hide navigation pane, tools pane, toolbar items and more
While viewing a PDF, you can choose to select the following elements to be displayed in Acrobat from the View >
Show/Hide menu:
• Navigation Panes: The navigation pane is an area of the workspace that can display different navigation panels.
Select to show or hide the Navigation menu items. For more information on navigation pane, see Navigating PDF
pages.
• Tools Pane: The right-hand pane of Acrobat displays frequently used tools. Choose View > Show/Hide > Tools
Pane to collapse the right-hand tools pane.
• Toolbar Items: To hide all toolbars, choose View > Show/Hide > Toolbar Items > Hide Toolbars. To return
toolbars to their default configuration, choose View > Show/Hide > Toolbar Items > Reset Toolbars.
• Page Controls: You can choose to hide the page controls like Fit To Width Scrolling, Fit To One Full Page, floating
toolbar and more.Choose View > Show/Hide > Page Controls > Show Page Controls. Tohide the floating toolbar,
choose View > Show/Hide > Page Controls > Undock.
• Menu Bar: To show or hide the menu bar, choose View > Show/Hide > Menu Bar. You can also use the keyboard
function key F9.
• Button Labels: Displaysthebutton labels of the selected tool. To show or hide the button labels, choose
View > Show/Hide > Button Labels.
• Rulers & Grids: Use grids to accurately line up text and objects in a document. To view or hide the grid,
choose View > Show/Hide > Rulers & Grids > Grid. A check mark appears next to the command name when the
grid is displayed. For more information, see Grids, guides, and measurements in PDFs.
• Cursor Coordinates: The Cursor Coordinates show the coordinate position of the pointer within the document
pane. To view x and y coordinates, choose View > Show/Hide > Cursor Coordinates. For more information, see
View cursor coordinates.

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Compare a revised PDF to an earlier version (Acrobat Pro)

Use the Compare Files feature to show the differences between two versions of a PDF. You can customize many options
for displaying the compare results. For more information, see Compare two versions of a PDF file.

Adjusting PDF views

Adjust page magnification

Tools on the Select & Zoom toolbar can change the magnification of PDF documents. Only some of these tools appear
on the default view of the toolbar. You can see all the tools by right-clicking the toolbar and choosing either individual
tools or Show All Select & Zoom Tools. A few tools are also available on the Page Control toolbar, such as Zoom
In/Out and Zoom by value.

Select and Zoom tools

A Marquee Zoom B Continuous or Dynamic Zoom C Actual Size D Zoom to Page Level E Fit Width F Pan & Zoom G Loupe magnifying glass

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Page Control tools

A Selection B Hand or Pan around C Zoom Out D Zoom In E Zoom Value F Fit to Window G Fit Full Page to Window H View in Read Mode

• The Marquee Zoom tool works in a few different ways. You can use it to drag a rectangle around a portion of the
page that you want to fill the viewing area. Or, simply clicking the Marquee Zoom tool increases the magnification
by one preset level, centering on the point where you clicked. To decrease the magnification by one preset level, Ctrl-
click the Marquee Zoom tool.
• The Continuous Zoom or Dynamic tool zooms in when you drag it up the page and it zooms out when you drag
down. If you use a mouse wheel, this tool zooms in when you roll forward and zooms out when you roll backward.
• Zoom In and Zoom Out buttons change the document magnification by preset levels.
• The Zoom Value option changes the page view according to a percentage you type in or select from a pop-up menu.
• Actual Size displays the page at 100% magnification.
• Fit Width adjusts the magnification so that the PDF fills the document pane horizontally.
• Zoom To Page Level adjusts the magnification so that one page fills the document pane vertically.
• The Pan & Zoom tool adjusts the magnification and position of the view area to match the area in an adjustable
rectangle in the Pan & Zoom window’s thumbnail view of the page.
• The Loupe Tool window displays a magnified portion of the PDF that matches the area in an adjustable rectangle
on the document pane.

Resize a page to fit the window

• To resize the page to fit entirely in the document pane, choose View > Zoom > Zoom To Fit Page.
• To resize the page to fit the width of the window, choose View > Zoom > Fit Width. Part of the page may be out of
view.
• To resize the page to fit the height of the window, choose View > Zoom > Fit Height. Part of the page may be out of
view.
• To resize the page so that its text and images fit the width of the window, choose View > Zoom > Fit Visible. Part of
the page may be out of view.

To see keyboard shortcuts for resizing the document, open the View > Zoom menu.

Show a page at actual size

? Choose View > Zoom > Actual Size.
The actual size for a PDF page is typically 100%, but the document may have been set to another magnification level
when it was created.

Change the magnification with zoom tools

? Do one of the following:
• Click the Zoom In button or the Zoom Out button in the toolbar.

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• Enter a magnification percentage in the Common Tools toolbar, either by typing or choosing from the pop-up
menu.
• Drag the Marquee Zoom tool to define the area of the page that you want to fill the document
pane. (View > Zoom > Marquee Zoom)
• Drag the Continuous Zoom tool (also called Dynamic Zoom) up to increase the magnification and
down to decrease magnification. (View > Show/Hide > Toolbar Items > Select & Zoom > Dynamic Zoom)

When the Marquee Zoom tool is selected, you can Ctrl-click or Ctrl-drag to zoom out. Holding down Shift switches
temporarily from the Marquee Zoom tool to the Dynamic Zoom tool.

Change the magnification with the Pan & Zoom Window tool
1 Choose View > Zoom > Pan & Zoom, or click the Pan & Zoom tool in the Select and Zoom toolbar.
2 Do any of the following:
• Drag the handles of the box in the Pan & Zoom window to change the document magnification.
• Drag the center of the box to pan across the area you want to see.
• Click the navigation buttons to move to a different page.
• Enter a value in the zoom text box, or click the plus or minus buttons to increase or
decrease the magnification by preset levels.

Change the magnification with the Loupe tool

Choose View > Zoom> Loupe Tool.
1 Click the area of the document you want to view in closer detail. A rectangle appears in the document,
corresponding to the area shown in the Loupe Tool window. You can drag or resize the rectangle to change the
Loupe tool view.
2 To change the magnification of the Loupe tool, do any of the following:
• Drag the slider.
• Click the plus or minus buttons.
• Enter a value in the zoom text box.

Use the Loupe tool to view a magnified area of the document.

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You can change the color of the Loupe tool rectangle. Click the Line Color pop-up menu in the lower-right corner of the
Loupe Tool window, and select a new color.

Change the magnification by using a page thumbnail

1 Click the Page Thumbnails button in the navigation pane on the left side of the window.
2 Locate the thumbnail for the page. Then position the pointer over the lower-right corner of the page-view box until
the pointer changes into a double-headed arrow.
3 Drag the corner of the box to reduce or expand the view of the page.
4 As needed, move the pointer over the zoom box frame within the thumbnail until it changes into a Hand icon. Then
drag the frame to see a different area of the page in the document pane.

A page-view box in a page thumbnail indicates the area of the page currently showing in the document pane.

Change the default magnification

1 In the Preferences dialog box under Categories, select Page Display.
2 Open the Zoom pop-up menu and choose a default magnification level.

Display off-screen areas of a magnified page

When you zoom in to a high magnification, you may be able to see only part of a page. You can shift the view to show
other areas of the page without changing the magnification level.
? Do either of the following:
• Use the vertical scroll bars to move up and down the pages or the horizontal scroll bars to move across the page.
• Select the Hand tool in the Common Tools toolbar and drag to move the page, as if moving a piece of paper on
a table.

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