Start Acrobat and do one of the following:
- Acrobat User Guide
- Introduction to Acrobat
- Workspace basics
- Opening and viewing PDFs
- Working with online storage accounts
- Acrobat and macOS
- Acrobat notifications
- Grids, guides, and measurements in PDFs
- Asian, Cyrillic, and right-to-left text in PDFs
- Workspace basics
- Creating PDFs
- Editing PDFs
- Edit text in PDFs
- Edit images or objects in a PDF
- Rotate, move, delete, and renumber PDF pages
- Edit scanned PDFs
- Enhance document photos captured using a mobile camera
- Optimizing PDFs
- PDF properties and metadata
- Links and attachments in PDFs
- PDF layers
- Page thumbnails and bookmarks in PDFs
- Action Wizard (Acrobat Pro)
- PDFs converted to web pages
- Setting up PDFs for a presentation
- PDF articles
- Geospatial PDFs
- Applying actions and scripts to PDFs
- Change the default font for adding text
- Delete pages from a PDF
- Scan and OCR
- PDF forms basics
- Create a form from scratch in Acrobat
- Create and distribute PDF forms
- Fill in PDF forms
- PDF form field properties
- Fill and sign PDF forms
- Setting action buttons in PDF forms
- Publishing interactive PDF web forms
- PDF form field basics
- PDF barcode form fields
- Collect and manage PDF form data
- About forms tracker
- PDF forms help
- Send PDF forms to recipients using email or an internal server
- Combining files
- Combine or merge files into single PDF
- Rotate, move, delete, and renumber PDF pages
- Add headers, footers, and Bates numbering to PDFs
- Crop PDF pages
- Add watermarks to PDFs
- Add backgrounds to PDFs
- Working with component files in a PDF Portfolio
- Publish and share PDF Portfolios
- Overview of PDF Portfolios
- Create and customize PDF Portfolios
- Sharing, reviews, and commenting
- Share and track PDFs online
- Mark up text with edits
- Preparing for a PDF review
- Starting a PDF review
- Hosting shared reviews on SharePoint or Office 365 sites
- Participating in a PDF review
- Add comments to PDFs
- Adding a stamp to a PDF
- Approval workflows
- Managing comments | view, reply, print
- Importing and exporting comments
- Tracking and managing PDF reviews
- Saving and exporting PDFs
- Enhanced security setting for PDFs
- Securing PDFs with passwords
- Manage Digital IDs
- Securing PDFs with certificates
- Opening secured PDFs
- Removing sensitive content from PDFs
- Setting up security policies for PDFs
- Choosing a security method for PDFs
- Security warnings when a PDF opens
- Securing PDFs with Adobe Experience Manager
- Protected View feature for PDFs
- Overview of security in Acrobat and PDFs
- Attachments as security risks
- Allow or block links in PDFs
- Electronic signatures
- Accessibility, tags, and reflow
- Searching and indexing
- Multimedia and 3D models
- Add audio, video, and interactive objects to PDFs
- Adding 3D models to PDFs (Acrobat Pro)
- Displaying 3D models in PDFs
- Interacting with 3D models
- Measuring 3D objects in PDFs
- Setting 3D views in PDFs
- Enable 3D content in PDF
- Adding multimedia to PDFs
- Commenting on 3D designs in PDFs
- Playing video, audio, and multimedia formats in PDFs
- Add comments to videos
- Print production tools (Acrobat Pro)
- Preflight (Acrobat Pro)
- PDF/X-, PDF/A-, and PDF/E-compliant files
- Preflight profiles
- Advanced preflight inspections
- Preflight reports
- Viewing preflight results, objects, and resources
- Output intents in PDFs
- Correcting problem areas with the Preflight tool
- Automating document analysis with droplets or preflight actions
- Analyzing documents with the Preflight tool
- Additional checks in the Preflight tool
- Preflight libraries
- Preflight variables
- Color management
You can open a PDF in many ways: from within the Acrobat application, from your email application, from your file system, or on a network from within a web browser.
Open a PDF in the application
Open a file from the Home > Recent view.
Choose File > Open. In the Open dialog box, select one or more filenames, and click Open. PDF documents usually have the extension .pdf.
If more than one document is open, you can switch between documents by choosing the document name from the Window menu.
Open a PDF from the desktop or within another application
Do one of the following:
To open a PDF attached to an email message, open the message and double-click the PDF icon.
To open a PDF linked to an open web page, click the PDF file link. The PDF usually opens in the web browser.
Double-click the PDF file icon in your file system.
In Mac OS, you sometimes cannot open a PDF created in Windows by double-clicking the icon. Instead, choose File > Open With > Acrobat.
Open a PDF in a web browser
When PDFs open in a web page, they open in Read mode. Read mode displays the PDF without the menus, panes, or toolbars visible. Near the bottom of the window, a floating toolbar appears with basic functionality for viewing document.
- To show the toolbar, roll your cursor near the bottom of the window.
- To page through the PDF, use the navigation buttons in the toolbar.
- To close Read mode and display the work area, click the Acrobat icon in the toolbar.
- To disable Read mode within the browser, open the Acrobat or Reader Preferences (in Windows, choose Edit > Preferences, in Mac OS, choose Acrobat / Acrobat Reader > Preferences). Select Internet from the left pane. Deselect Display In Read Mode By Default.
If you have more than one Adobe PDF application on your computer, you can specify which one is used to open PDFs. See the Select Default PDF Handler in General preferences.
About viewing PDFs in a web browser
Options in the web browser control how you view a PDF, either within the browser or directly in Acrobat or Reader. To change the current display behavior, see the browser documentation on managing add-ons or plug-ins. If you open PDFs in Acrobat outside the browser, you cannot use the preference Allow Fast Web View in a browser.
Because keyboard commands can be mapped to the web browser, some Acrobat shortcuts cannot be available. Similarly, you may need to use the tools and commands in the Acrobat toolbar rather than the browser toolbar or menu bar. For example, to print a PDF document, use the Print button in the Acrobat toolbar rather than the Print command in the browser. (In Microsoft Internet Explorer, you can choose File > Print, Edit > Copy, and Edit > Find On This Page on the Internet Explorer toolbar.)
Having multiple versions of Acrobat or Adobe Reader installed on the same computer is not recommended. Mixed versions on your system can prevent you from viewing PDFs in a web browser. Examples include Acrobat XI with Adobe Reader X, or Acrobat 9 with Reader XI, and so on. For more information about coexisting installations, see this TechNote.
Display In Read Mode By Default
Select to display PDFs in the browser without the menus, panes, or toolbars visible.
Allow Fast Web View
Select to allow page-at-a-time downloading for PDFs that have been saved with Fast Web View enabled. With Fast Web View turned on, a web server can send just the requested page, rather than the entire PDF.
Allow Speculative Downloading In The Background
Choose to allow the browser to continue downloading PDF pages from the web, even after the first page displays.
Choose a connection speed from the menu. The connection speed helps Acrobat or other media provide a smooth display when content is read on the Internet.
Internet Settings [or Network Settings]
Click to open the Internet or network connection dialog box or panel for your computer. For more information, consult your operating system Help, your Internet service provider, or your local network administrator.
Reopen PDFs from the last Acrobat session
Acrobat can automatically reopen PDFs from the last session on launch. To set the preference, do the following:
In Acrobat, go to Edit > Preferences (Windows), or Acrobat > Preferences (Mac).
In the left pane, select General, and then select the Open PDFs From Last Session On Acrobat Launch check box.