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Why this runs on your computer

There is no upload: The work happens in this tab. Your file never travels, so there is no copy of it anywhere but your own disk.
Nothing to delete later: Sites that upload promise to delete your file afterwards. That promise only matters because the file was theirs to hold.
It works with the Wi-Fi off: The honest test. Turn off your connection and the tools keep working, because everything they need is already here.

EPUB metadata editor: title, author, series and more

Change an EPUB's title, author, series, language, description and tags - here in this tab, with nothing uploaded.

How to edit epub metadata

Drop your EPUB - its current details fill the form.
Edit what you want to change.
Save the EPUB.

Why this one stays private

Tidying a library means editing hundreds of books. Each one is edited here in the browser, and none is uploaded.

Questions

Which fields can I change?

Title, authors, series and number, language, publisher, publication date, description and subjects (tags).

Will Calibre and my e-reader see the series?

Yes - the series is written the way Calibre writes it, which Kobo and most library apps read, and as an EPUB 3 collection as well.

Does it work with books bought from Kindle, Kobo or Apple?

Only if they have no DRM. Copy-protected books are encrypted, and removing that is not something this site does. Books from Project Gutenberg, Standard Ebooks, Humble Bundle and most indie stores are DRM-free.

How to edit epub metadata

Why this one stays private

Questions

Other tools here