Convert PDFs to PDF/X, PDF/A, or PDF/E
You can validate PDF content against PDF/X, PDF/A, PDF/VT or PDF/E criteria. You can also save a copy of the PDF as PDF/X, PDF/A, or PDF/E, provided it complies with the specified requirements. For example, under certain circumstances, an ICC profile that describes the destination device is required for PDF/X-1a, PDF/X-3, and PDF/X-4 compliance. If your document doesn’t have an embedded ICC output profile, you can embed one before saving.
You can convert a PDF to a standards-compliant PDF using the Standards wizard. This wizard explains the intents of specific formats as it guides you through the process. If you are familiar with the standards, you can use a built-in profile, or a profile created via the wizard, to convert a PDF.
You can also create PDF/X-, and PDF/A-compliant files using Acrobat Distiller.
If the conversion succeeds, a green check mark appears in the Preflight dialog box. If the conversion fails, a red X appears in the Preflight dialog box.
Verify a PDF against PDF/X, PDF/A, PDF/VT, or PDF/E criteria
PDF/X, PDF/A, PDF/VT, and PDF/E files can be created in various ways, such as by using Acrobat Distiller or the File > Save As Other command. If you open a PDF that conforms to one of these standards, you can view the standards information in the Navigation pane. (Choose View > Show/Hide > Navigation Panes, and then click the Standards .) The Standards menu and panel are available only if the PDF conforms to a standard. The Standards panel is present in all versions (DC, Std, and even Reader). However, Verify Conformation functionality is only present in Acrobat DC.
The Conformance information indicates the standard used to create the file, the ISO name, and whether the file has been verified as PDF/X-, PDF/A-, PDF/VT-, PDF/UA-, or PDF/E-compliant. The Output Intent information indicates the color settings associated with the file. To verify the standards conformance for the file, click Verify Conformance.
Remove PDF/X, PDF/A, or PDF/E information
You can remove all PDF/X-, PDF/A-, or PDF/E-specific information, such as the output condition or the GTS_PDFX version key. This action is useful if a file has been modified, if you want to start over, or if an ICC profile increases the file size too much.