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The OXPS format is a fixed-page format that is very popular among users and widely supported by various applications, because a OXPS document looks the same on any device. PDF and XPS formats are very similar in their purposes and basic concepts, while internally they are quite different. For that reason, editing OXPS is an important feature of GroupDocs.Editor.
Various document viewing or publishing applications allow users to open (Adobe Acrobat, XPS Viewer), and sometimes edit (Adobe InDesign) documents of specific formats. These applications typically produce so-called “fixed-page” format documents. Such a document format describes precisely where a document’s content is placed on every page. Internally, the OXPS format contains a description of every page, as well as drawing instructions, specifying the layout of the content on the page. This is similar to image formats, describing where the content is shown either in raster or vector form.
OXPS is a complex format. Several stages of calculations are required in the process of converting a document to OXPS, including the layout calculation. Since these stages include complex computations, they are time-consuming. Also, the OXPS format is rather complex by itself. It has a specific file structure, graphics model and font embedding. Moreover, it features some complex output functionality, such as document structure tags, encryption, digital signatures, and editable forms.
In order to make a OXPS editable, the GroupDocs.Editor uses advanced and complex algorithms, optical recognition, machine learning, and so on, so on the result users are able to edit all content of the document like an ordinary WordProcessing or textual document. This works whenever or not the OXPS documents have textual layer, internal semantic structure (as described in PDF/A-1a, PDF/A-2a, and PDF/UA-1 formats), support search/find operations and so on.
There are also some drawbacks. First of all, making a OXPS document editable is a very complex computational task, it requires a lot of processing time, so such documents are opening much longer then of other formats. Second, our conversion algorithms are very advanced, but they cannot guarantee perfect quality, which very much depends on a document's content, its structure, internal semantics and so on. We’re constantly improving our conversion mechanism, it now supports all common document structures like paragraphs, images, tables, lists, headers and footers, footnotes, page numbers, and many more.
Open XML Paper Specification (also referred to as OpenXPS) is an open specification for a page description language and a fixed-document format.
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You can also edit many other file formats. Please see the complete list below.