Formatting Objects Processor
Java-based document converter
From Wikipedia, the free encyclopedia
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.
| Apache FOP | |
|---|---|
 | |
| Original author | James Tauber |
| Developer | Apache Software Foundation |
| Stable release | 2.11[1]
/ 28 April 2025 |
| Written in | Java |
| Operating system | Cross-platform |
| Type | XSL-FO |
| License | Apache License 2.0 |
| Website | xmlgraphics |
| Repository | |
FOP is open source software, and is distributed under the Apache License 2.0.
Current status
The latest version of Apache FOP is 2.11.[2]
Major limitations
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
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
See also
- XSL Formatting Objects (XSL-FO)
- XSL
