Snowflower EPUB Validator

Snowflower EPUB Validator allows you to easily check for issues in EPUB-format e-books. When creating an e-book and submitting it to an online store, problems with the EPUB file may cause it to fail the review process. Even after approval, display issues may occur on readers' devices after publication. Snowflower EPUB Validator automatically and quickly detects issues that are difficult to find through visual inspection and provides clear, easy-to-understand reports. By checking your EPUB files before submission, you can help prevent these issues from occurring. * Supports both EPUB2 and EPUB3 specifications. * Validate EPUB files easily with a simple drag-and-drop operation. * Reports EPUB issues across three severity levels: Fatal, Error, and Warning. * Operates offline without uploading EPUB files to external servers. * Includes IDPF EpubCheck 5.3.0. Snowflower EPUB Validator strictly checks EPUB specifications. Therefore, it may detect potential compatibility issues that do not cause problems in major EPUB readers.