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XFA (also known as XFA forms) stands for XML Forms Architecture, a family of proprietary XML specifications that was suggested and developed by JetForm to enhance the processing of web forms. It can be also used in PDF files starting with the PDF 1.5 specification.
An XDP can also package a PDF file, along with XML form and template data. [3] When the XFA (XML Forms Architecture) grammars used for an XFA form are moved from one application to another, they must be packaged as an XML Data Package. [2] The format of an XFA resource in PDF is described by the XML Data Package Specification. [4]
JetForm Design allowed for routing and tracking in workflow systems, on-screen form creation, and access to SQL and ODBC-compliant databases. JetForm Filler was used for completing on-screen forms. JetForm also developed the XML form format "XFA", which was later adopted by Adobe into its PDF software.
XFA: enhance the processing of web forms [citation needed] XForms: a format for the specification of a data processing model for XML data and user interface(s) for the XML data, such as web forms; XHTML: a markup language that has the same depth of expression as HTML, but with a syntax conforming to XML; XHTML Basic; XHTML Friends Network
However, these are a type of form now called acroforms. Forms created by Designer are an incompatible type (commonly XFA forms) and are not in general compatible with existing non-Adobe software. Owners of Acrobat 7.0 Professional have the choice of making acroforms directly, or using the bundled (on Windows) copy of Designer to create XFA forms.
By the version 0.18 release in 2011, the poppler library represented a complete implementation of ISO 32000-1, [3] the PDF format standard, and was the first major free PDF library to support its forms (only Acroforms but not full XFA forms) [5] [6] and annotations features. [3]
3D artwork, e.g. support for Universal 3D file format; OpenType font embedding; support for XFA 2.2 rich text elements and attributes (XFA 2.1 and 2.2 defined for example the following features: dynamic XFA forms, W3C XML digital signatures for XFA, XFA support for Web Services, XFA 'doc-literal' SOAP operations over HTTP, the Web Service's ...
It supports saving PDF forms and importing or exporting form data in FDF/XFDF format. Since version 2.5, there has been partial support for XFA, and exporting form data in XML Data Package (XDP) or XML format. OCR support was also added in version 2.5.