A graphical interface for the official W3C EPUBCheck conformance checker.

Download the correct version of the application for your operating system on the releases page.

1. Extract the downloaded ZIP file.
2. Double-click the extracted executable EPUBCheckFX.exe.

1. Double-click the downloaded disk image (DMG file).
2. Drag the application EPUBCheckFX into the Application folder.
3. Start the application EPUBCheckFX from the Application folder by double-clicking.

1. Extract the downloaded tar.gz archive by executing tar -zxvf EPUBCheckFX-x.x.x-linux.tar.gz in the terminal (where x.x.x is the current version number).

2. Start the application by double-clicking on the file EPUBCheckFX-x.x.x.jar.

   One can also start the application from the command line by executing the following command:

   java -jar EPUBCheckFX-x.x.x.jar

Please refer to the EPUBCheck documentation at https://www.w3.org/publishing/epubcheck/ or the EPUBCheck GitHub Wiki at https://github.com/w3c/epubcheck/wiki.

Install the required dependencies:

• Java 17
• Apache Maven

In order to build the runnable JAR file and all other artifacts, you have to run the following Maven command in the terminal:

mvn clean package

The macOS build is only possible on Macs and disabled during the normal build. You have to pass the profile macos to Maven in order to build the dmg file:

mvn clean package -Pmacos

• The App is only translated in English and German.
• It is not possible to select an EPUB folder with the button on the start page. One can however drag an EPUB folder on the window to validate it.

• EPUBCheckFX uses EPUBCheck, the official W3C conformance checker for EPUB publications, to perform the EPUB validation.
• EPUBCheckFX is an homage to the pagina EPUB-Checker however it is a completely independent project and does not share any code.

This project is open source licensed under the BSD 3-Clause License. Please see the LICENSE file for more information.