Validating your ebook
Validating and Testing your EPUB
Validating and testing your EPUB before you share it with family, friends, or a wider audience is an important step.
Validating
Sigil has a built-in EPUB Validator, but you can also upload your EPUB to a web-based validator.
Files that are 10 MB or smaller in size can be validated a web-based EPUB validator. For files that exceed this size, a desktop version of EPUB Check is available as a free download.
- Open Epub Validator in your browser.
- Upload the EPUB file you want to inspect and click the Upload and Recheck file button.
- This service will check to see if it complies with standards set by the World Wide Web Consortium (W3C). If your EPUB does not meet these specifications, it will return a message listing all the issues found in your EPUB. Each error message explains the problem and specifies the file and line(s) of code that you can refer to when troubleshooting.
- Once your EPUB file contains no errors, you will get a Results message letting you know. You can now proceed with the next step: publishing and distribution.
Testing
If you want to view and test your new Ebook in a free ereader Adobe Digital Editions is a great option. Here is a resource on some other good options:
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Adobe Digital Editions
- Download Adobe Digital Editions
- Open Adobe Digital Editions (ADE).
- Add the eBook by dragging and dropping the EPUB file into ADE or selecting FILE > ADD TO LIBRARY from the menu.
- The EPUB can now be read and tested