EPUB Metadata Editor
Edit the title, author, language and publisher of an EPUB and download a fixed copy — all client-side.
About EPUB Metadata Editor
EPUB Metadata Editor lets you fix the title, author, language and publisher stored inside an EPUB and download a corrected copy — useful when an ebook shows the wrong name on your Kindle or in Calibre.
How to use EPUB Metadata Editor
- 1Choose your file with the picker above — it is read locally in your browser, never uploaded.
- 2Adjust any options on offer — delimiter, columns, formatting and so on — to match what you need.
- 3Saving happens instantly as you type; review the result in the output panel.
- 4Click Copy to grab the output or Download to save it as a file — EPUB Metadata Editor keeps everything on your device.
Why use EPUB Metadata Editor?
- ✓Correcting a wrong or missing author or title before sideloading to a device
- ✓Setting the language so e-readers hyphenate and sort correctly
- ✓Standardising metadata across a self-published catalog
- ✓100% free with no sign-up, no watermark and no usage limits
- ✓Runs entirely in your browser — your data is never uploaded or stored
- ✓Works offline once loaded, with instant results and one-click copy or download
Frequently asked questions
Does it change my original file?+
No. The editor rewrites the OPF package and repackages a brand-new EPUB for download — your original file on disk is never modified.
Why does the wrong title show on my e-reader?+
E-readers read the EPUB's internal Dublin Core metadata, not the filename. Updating the title and author here fixes how the book appears in your library.
Is it free to use?+
Yes — it is completely free with no sign-up, no account and no usage limits. There is no watermark and no paywall, so you can process as many files as you like.
Is my data private and secure?+
Yes. This tool runs entirely in your browser using client-side JavaScript — your data is never uploaded to a server, stored or logged. Once the page has loaded you can even use it offline, which makes it safe for confidential or proprietary files.
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