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// Workers AI · dad joke modeWhat did the Formatting Objects Processor say? "I'm processing emotions.

From Wikipedia, the free encyclopedia
Apache FOP
Original authorJames Tauber
DeveloperApache Software Foundation
Stable release
2.11[1] / 28 April 2025; 14 months ago (28 April 2025)
Written inJava
Operating systemCross-platform
TypeXSL-FO
LicenseApache License 2.0
Websitexmlgraphics.apache.org/fop
Repository

Formatting Objects Processor (FOP, also known as Apache FOP) is a Java application that converts XSL Formatting Objects (XSL-FO) files to 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

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The latest version of Apache FOP is 2.11.[2]

Major limitations

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Most important elements added in XSL-FO 1.1 (flow maps, table markers, indexes. etc.) are not available [3]

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

Input support

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

Apache FOP implements the <fo:float> element with some limitations.[4] 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

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Apache FOP supports the following output formats:[5]

In progress:

See also

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References

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  1. "Release 2.11". 28 April 2025. Retrieved 19 June 2025.
  2. "Apache FOP Status".
  3. "Apache FOP XSL-FO Compliance".
  4. "Apache FOP 2.0 release notes". Retrieved 2015-12-18.
  5. Keiron, Liddle (2010). "Apache FOP Output Formats" (PDF).{{cite web}}: CS1 maint: url-status (link)
  6. "FOP 0.95 - PDF/X (ISO 15930)". Retrieved 2011-05-22.