Result: That application will be selected. From the Open with: section in the new window that opens, select your preferred application, such as Adobe Reader or Preview.Result: A new window will open with information on that PDF file. Choose Get Info from the menu that opens.Result: A menu will open next to the file name. Questions? Comments? Have a fix? Post them below orīe sure to check us out on Twitter and the CNET Mac forums.Q: How do I change my operating system's default application for opening PDFs? Answer To set a PDF viewer as the default on Mac OS X: When finished, the resulting document will no longer be editable. Then select "Save as PDF" from the PDF menu at the bottom-left of the print dialog box. To do this, simply press Command-P or choose the print option from the File menu. Since the printer cannot handle multiple layers, this service will flatten all contents to a basic PDF document. This global service will take any document in the form that is sent to the printer, and save it as a PDF instead. Instead of using standard file saving and exporting features supported in the program, use the global "Print to PDF" service in OS X. If you save the PDF or duplicate it to another document, or use the "Export" option in the File menu, the fields will continue to be editable when you next open the document.ĭespite this apparent limitation, OS X does have a feature that will properly flatten a PDF in Preview. However, if you add data to a PDF form in Apple's Preview program (the default PDF reader in OS X), you may find no explicit option to flatten the PDF. Similarly, an editable field in a PDF is simply another layer that the PDF format supports, and they can be flattened to make any entered contents static. These fields are editable simply by clicking them, and to prevent them from being edited you will need to "flatten" the PDF (click for larger view). Flattening the layers combines them into a single layer, making them no longer editable independently. For example, a Photoshop image may have numerous layers to it so each layer can be edited separately by the artist. While this is convenient, if you have a PDF form you are managing, you may run into an issue if you want to save the PDF's entered data in a static form that can no longer be edited.ĭoing this is called "flattening" a document, and is commonly applied to any file type that contains multiple elements to present a final rendered product. The PDF format is handy as a cross-platform approach to preserving document layout and structure PDFs are commonly used for electronic forms with editable fields for you to fill in data.
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