Editing Formatting Objects Processor

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{{short description|Java-based document converter}}
{{Infobox software
| name = Apache FOP
| logo = Apache FOP logo.png
| logo size = 200px
| screenshot = 
| caption = 
| author = [[James Tauber]]
| developer = [[Apache Software Foundation]]
| latest release version = {{wikidata|property|reference|P348}}
| latest release date = {{start date and age|{{wikidata|qualifier|P348|P577}}}}
| latest preview version = 
| latest preview date = 
| operating system = [[Cross-platform]]
| programming language = [[Java (programming language)|Java]]
| genre = [[XSL-FO]]
| license = [[Apache License 2.0]]
| website = {{URL|https://xmlgraphics.apache.org/fop}}
}}

'''Formatting Objects Processor''' ('''FOP''', also known as '''Apache FOP''') is a [[Java (programming language)|Java]] application that converts [[XSL Formatting Objects]] (XSL-FO) files to [[Portable Document Format|PDF]] or other printable formats.
FOP was originally developed by [[James Tauber]] who donated it to the [[Apache Software Foundation]] in 1999. It is part of the [[Apache XML Graphics]] project.

FOP is [[open source software]], and is distributed under the [[Apache License 2.0]].

==Current status==
The latest version of Apache FOP is 2.10.<ref>{{cite web|url=https://xmlgraphics.apache.org/fop/status.html|title=Apache FOP Status}}</ref> This is the seventeenth stable release.<ref>{{cite web|url=https://xmlgraphics.apache.org/fop/news.html|title=Apache FOP News}}</ref>

==Major limitations==
Most important elements added in XSL-FO 1.1 (flow maps, table markers, indexes. etc.) are not available <ref>{{cite web|url=https://xmlgraphics.apache.org/fop/compliance.html|title=Apache FOP XSL-FO Compliance}}</ref>

In addition, older XSL-FO 1.0 features are still not fully supported including automatic table layout, floats and more.

==Input support==
Apache FOP supports embedding a number of image formats in the XSL-FO (through the <code><fo:external-graphic></code> element). These include:

* [[Scalable Vector Graphics|SVG]]
* [[Portable Network Graphics|PNG]]
* Bitmap [[BMP file format|BMP]]
* [[PostScript]] (as EPS)
* [[JPEG]]
* Some [[TIFF]] formats.

Apache FOP implements the <code><fo:float></code> element with some limitations.<ref>{{cite web |url=https://xmlgraphics.apache.org/fop/2.0/releaseNotes_2.0.html |title=Apache FOP 2.0 release notes |access-date=2015-12-18}}</ref> In versions prior to 2.0, external graphics objects were limited to being drawn inline or in a block with no wrapped text.

==Output formats==
Apache FOP supports the following output formats:

* [[PDF]] (best output support), including [[PDF/X]] and [[PDF/A]] with some limitations<ref>{{cite web |url=https://xmlgraphics.apache.org/fop/0.95/pdfx.html |title=FOP 0.95 - PDF/X (ISO 15930) |access-date=2011-05-22}}</ref>
* [[ASCII]] text file facsimile
* [[PostScript]]
* Direct printer output ([[Printer Control Language|PCL]])
* [[Advanced Function Presentation|AFP]]
* [[Rich Text Format|RTF]]
* [[Java2D]]/[[Abstract Window Toolkit|AWT]] for display, printing, and page rendering to [[Portable Network Graphics|PNG]] and [[Tagged Image File Format|TIFF]]

In progress:
*[[Maker Interchange Format|MIF]]
*[[Scalable Vector Graphics|SVG]]

==See also==
{{Portal|Free and open-source software}}
* [[XSL Formatting Objects]] (XSL-FO)
* [[Extensible Stylesheet Language|XSL]]

==External links==
* [https://xmlgraphics.apache.org/fop/ Apache FOP Project]
* [https://www.data2type.de/en/xml-xslt-xslfo/xsl-fo/formatter-comparison/ XSL-FO formatter comparison]

==References==
{{Reflist}}

{{Apache Software Foundation}}

[[Category:Apache Software Foundation|FOP]]
[[Category:Free system software]]
[[Category:Free software programmed in Java (programming language)]]
[[Category:Java (programming language) libraries]]


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