epubcheck

[](https://github.com/w3c/epubcheck/releases/) [](https://github.com/w3c/epubcheck/actions/workflows/maven-ci.yml?query=branch%3Amain) EPUBCheck ========= EPUBCheck is the official conformance checker for EPUB publications. EPUBCheck can be run as a standalone command-line tool or used as a Java library. EPUBCheck is open source software, maintained by the [DAISY Consortium](http://www.daisy.org) on behalf of [W3C](https://www.w3.org/publishing/epubcheck_fundraising). **We Need Your Support!!** Financial support is critical to the development of EPUBCheck, the tool we all use to validate EPUB files. We need to make sure that the resources are adequate to both update the tool and provide for its continued maintenance over the next two years; please [help us fund and support EPUBCheck](https://www.w3.org/publishing/epubcheck_fundraising), and join the [list of donators](#donators)! ## Downloads Check the [releases page](https://github.com/w3c/epubcheck/releases) to get the latest distribution. [EPUBCheck v5.4.0](https://github.com/w3c/epubcheck/releases/tag/v5.4.0) is the latest production-ready release, to be used to validate both EPUB 2 and 3 files. EPUB 3 publications are checked against the [EPUB 3.4](https://www.w3.org/TR/epub-34/) specification. ## Documentation Documentation on how to **use** EPUBCheck, to **contribute** to the project or to **translate** messages is available on the [EPUBCheck wiki](https://github.com/w3c/epubcheck/wiki). Technical discussions are held on our public [mailing list](https://lists.w3.org/Archives/Public/public-epubcheck/). To subscribe to the mailing list, send an email with subject `subscribe` to [[email protected]](mailto:[email protected]?subject=subscribe). To participate in the discussion, simply send an email to [[email protected]](mailto:[email protected]). Historical archives of discussions prior to October 2017 are stored at the old [EPUBCheck Google Group](https://groups.google.com/forum/#!forum/epubcheck). ## Building EPUBCheck ### Build from sources To build epubcheck from the sources you need Java Development Kit (JDK) 1.7 or above and [Apache Maven](http://maven.apache.org/) 3.0 or above installed. Build and run tests: ``` $ mvn clean install ``` Will copy `*.jar` files and packages to `target/` folder... ### Build using docker To build the epubcheck using docker, use the build command below: ```bash $ docker build . -t epubcheck ``` To run the epubcheck image as container, use example command below: ``` … ``` ## Credits EPUBCheck is currently maintained by [the DAISY Consortium](https://www.daisy.org/), on behalf of W3C. Initial EPUBCheck development was largely done at [Adobe](https://www.adobe.com/). A significant part of EPUBCheck functionality comes from the schema validation tool [Jing](https://relaxng.org/jclark/jing.html), used with schemas from the [Nu HTML Checker](https://validator.github.io/validator/), [IDPF](https://idpf.org), and [DAISY](https://www.daisy.org/). Past and present EPUBCheck developers include: Romain Deltour, Matt Garrish, Tobias Fischer, Markus Gylling, Steve Antoch, Peter Sorotokin, Thomas Ledoux, Masayoshi Takahashi, Paul Norton, Piotr Kula, Arwen Pond, Liza Daly, Garth Conboy, and [several others](https://github.com/w3c/epubcheck/graphs/contributors). Many thanks to the numerous people who have contributed to the evolution of EPUBCheck through bug reports, pull requests, and translations! ## Donators The following organizations are supporting the development of EPUBCheck by their contribution to the [fundraising initiative](https://www.w3.org/publishing/epubcheck_fundraising):

## License EPUBCheck is made available under the terms of the [3-Clause BSD License](http://opensource.org/licenses/BSD-3-Clause)