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Is there any particular reason why the built-in PDF viewers in Chrome and the latest version of Firefox don't support FDF's? Seems like they went to great effort to get PDFs working and then just at FDFs even though presumably they wouldn't have taken much more time to add support for?

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closed as not constructive by Karan, TFM, KronoS, HackToHell, Hennes Mar 10 '13 at 14:35

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what the heck is a FDF? –  Sathya Mar 8 '13 at 14:38
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FDF stands for "Adobe Forms Data Format". http://www.adobe.com/devnet/acrobat/fdftoolkit.html –  Lorenzo Von Matterhorn Mar 8 '13 at 14:41
    
@LorenzovonMatterhorn - thanks for the context –  Sathya Mar 9 '13 at 4:12

1 Answer 1

There is no objective answer to this question, but I would posit its because Adobe considers FDF/XFDF obsolete, and since the 1.5 spec, have been using XFA. The XFA specification is not included in the ISO 32000-1 specs, so there is no open standard for implementing it. see more here: http://en.wikipedia.org/wiki/Portable_Document_Format#Forms_Data_Format_.28FDF.29

XFA specification is not included in ISO 32000-1 PDF 1.7 and is only referenced as an external proprietary specification created by Adobe. XFA was not standardized as an ISO standard. In 2011 the ISO Committee (TC 171/SC 2/WG 8) urged Adobe Systems to submit the XFA Specification for standardization.

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