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An OpenDocument file is commonly a collection of several subdocuments within a (ZIP) package. An OpenDocument file as a single XML is not widely used. According to the OpenDocument 1.0 specification, the ZIP file specification is defined in Info-ZIP Application Note 970311, 1997.
In addition to data and document content in XML markup, files in the ZIP package can include other text and binary files in formats such as PNG, BMP, AVI, PDF, RTF, or even an already packaged ODF file. OPC also defines some naming conventions and an indirection method to allow position independence of binary and XML files in the ZIP archive.
An open file format is a file format for storing digital data, defined by a published specification usually maintained by a standards organization, and which can be used and implemented by anyone. For example, an open format can be implemented by both proprietary and free and open source software , using the typical software licenses used by each.
The .ZIP file format was designed by Phil Katz of PKWARE and Gary Conway of Infinity Design Concepts. The format was created after Systems Enhancement Associates (SEA) filed a lawsuit against PKWARE claiming that the latter's archiving products, named PKARC, were derivatives of SEA's ARC archiving system. [3]
There is an OpenDocument format which is just a single XML file, but most applications use the package format. Thus, any of the vast number of tools for handling zip files and XML data can be used to handle OpenDocument. Nearly all programming languages have libraries (built-in or available) for processing XML files and zip files.
[7] [8] This is typically true for web content that is served with Deflate-based HTTP compression or web content in a Deflate-based file format such as PNG or WOFF font files. [9] Another use case is software updates or downloads with software package files that have a zip -based format such as Android application packages (APK) or Java ...
The PNG (Portable Network Graphics) file format was created as a free, open-source alternative to GIF. The PNG file format supports 8-bit (256 colors) paletted images (with optional transparency for all palette colors) and 24-bit truecolor (16 million colors) or 48-bit truecolor with and without alpha channel – while GIF supports only 8-bit ...
Apache OpenOffice from version 3.0 can import Office Open XML files but not save them. [46] Version 3.2 improved this feature with read support even for password-protected Office Open XML files. [47] [48] [49] The Go-oo fork of OpenOffice could also write OOXML files. KOffice from version 2.2 and later was able to import OOXML files.