Edit EPUB metadata
Fix the title, author, language and cover your e-reader shows. Nothing is uploaded.
Your files never leave your device
Drop files here
or click to choose files
How it works
This tool fixes the metadata your e-reader actually displays: the book's title, author, language and cover image. Drop in an .epub, edit the fields, optionally swap in a new cover (JPG or PNG), and download the corrected book — ready for Apple Books, Kobo, Kindle conversion workflows or your Calibre library.
It handles both EPUB 2 and EPUB 3 correctly: fields are written into the book's package document with proper namespaces, the modification timestamp is updated on EPUB 3 books, and a replaced cover keeps its original internal path so cover pages that reference it keep working. Everything else in the book — text, styles, fonts — is preserved byte-for-byte.
The whole edit happens in your browser: the EPUB is unpacked, modified and repacked on your device, and never uploaded anywhere. That makes it a safe way to clean up e-books you've written, scanned collections, or purchases with sloppy metadata — no account, no watermark, no server.
Frequently asked questions
Why does my e-reader show the wrong title or author?
E-readers display the metadata inside the EPUB file, not the filename. If the book was created with placeholder metadata, every reader shows it wrong — editing the metadata here fixes it everywhere.
What image should I use for the cover?
A JPG or PNG, ideally around 1600×2400 pixels (a 2:3 portrait ratio). The tool keeps the cover's internal path, so existing cover pages in the book keep working.
Does editing re-compress or alter the book's content?
No. Chapters, styles and fonts are carried over unchanged — only the metadata fields you edit (and the cover, if you replace it) are modified before the book is repacked.