![]() ![]() Transparency flattening is a function within the Print Production Tools. (2) Each of these three functions can be accessed from functions from within Acrobat DC Pro. There was never a drop down menu in any Acrobat version to do this!! The third relates to taking annotations including forms fields (forms fields are actually PDF annotations) and merging (i.e., “flattening”) them into the PDF file's content streams - such “flattened” content no longer are editable as annotations or fillable/selectable as form fields.Ī fourth, much less common use of the term “flattening” is to convert all content on each page of a PDF file into one, big honk'in raster image in the mistaken belief that this somehow provides more “protection” to the PDF file (it doesn't but does significantly increase file size and decrease rendering quality). The second relates to reducing the number of “layers” defined in a PDF file to a single layer. The first relates to “transparency flattening” in which all objects that are not 100% opaque are “flattened” / blended into totally opaque objects. ![]() (1) Adobe endorses the comments of others on this thread that there isn't a single meaning to the word “flattening” when it comes to PDF! Regrettably, there are at least three separate meanings to the word “flattening.” On behalf of Adobe Systems Incorporated and as a member of Acrobat development organization, I feel that it is important to clean the air here: ![]()
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