Edit Metadata
EPUB Metadata Editor
Open an EPUB and edit its Dublin Core metadata fields directly in your browser. Update the title, author, publisher, language, description, publication date, rights statement, and subject keywords. The updated EPUB is rebuilt and downloaded with the new metadata — no server required.
Input formats
Output formats
Common uses
- Fix a wrong author name in a converted EPUB
- Add missing metadata before submitting to Kindle or Apple Books
- Update the language code before distribution
- Add a description/blurb to an EPUB missing one
Limitations
- DRM-protected EPUBs cannot be edited.
- Metadata is stored in the OPF file — some reading apps cache old metadata and may need to be refreshed.
- Series metadata (EPUB 3 refinements) editing is not supported in this version.
Your e-book files, handled privately
This tool runs entirely in your browser. Your files are never uploaded to a server. This tool does not remove DRM or bypass copyright protection. Only upload files you own or have permission to process.
Frequently asked questions
No. The metadata editor only modifies the OPF XML file inside the EPUB archive. The reading content, images, and structure are not touched.
Language codes follow the BCP 47 standard. Common values: en (English), en-US (American English), fr (French), de (German), es (Spanish), zh (Chinese), ja (Japanese).
The identifier is a unique ID for the book, often an ISBN (ISBN:978-...) or a UUID. It is used by reading apps and distribution platforms to identify the book.