PDFly XO

eBook Metadata Editor — Free Online Tool

Modify metadata (Book Title, Author, Series, Publisher, Description, Language, ISBN/Identifier, Tags) and download the updated eBook file immediately.

Interactive Tool Workspace Ready

Upload your file to begin processing locally on your device with WebAssembly security.

How to Use eBook Metadata Editor Online

  1. Step 1: Load eBook File — Select your .epub or eBook.
  2. Step 2: Edit Metadata Fields — Update title, author, publisher, and descriptions.
  3. Step 3: Save & Download — Get your updated eBook file with fresh metadata.

Why Use PDFly XO for eBook Metadata Editor?

  • 100% Client-Side Privacy: All file processing is performed locally in your web browser. Your private documents are never uploaded to any remote server.
  • Zero Wait Time: Local WebAssembly execution ensures near-instant document processing without file size upload latency.
  • Free & Unlimited: Complete access with no subscriptions, watermarks, or hidden paywalls.

Frequently Asked Questions

Will my changes work on Apple Books and Kindle?
Yes! The OPF package document is updated with standard Dublin Core tags.

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