

Questions? Comments? Have a fix? Post them below orīe sure to check us out on Twitter and the CNET Mac forums. 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. Tick the 'Always use this app' check box and click 'OK'. While it is one of the best macOS default apps to use, it still has its limitations when. It can create, merge, unmerge, and sign PDF files.
#Preview as default pdf viewer mac how to
A pop-up window will prompt you to choose your preferred software. This video shows you how to set Preview as the default PDF viewer on you Mac. The Preview app on macOS is also the default PDF viewer. Since the printer cannot handle multiple layers, this service will flatten all contents to a basic PDF document. Click on 'Open with' > 'Choose another app'. 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). If all the above-listed solutions fail to open PDF file with Preview on mac, you may need to find an alternative PDF reader, like Google Browser. Flattening the layers combines them into a single layer, making them no longer editable independently. Once the resetting finishes, restart your mac and open PDF with Preview again. 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.
