Work through this in order
- Choose an EPUB file that you can inspect.
- Open the EPUB Metadata Viewer.
- Check publication title, author and language fields.
- Confirm package and manifest counts.
- Cross-check against publisher data if metadata is missing or inaccurate.
Use the matching tool
Inspect a local copy with EPUB Book Metadata Viewer. After the check, save or repair files only using trusted software that supports the format.