epubcover
Private EPUB cover editor

Change Your EPUB
Cover Online

Change, add, or extract an EPUB cover without uploading your book. The entire process runs locally in your browser.

✓ Free ✓ No signup ✓ EPUB 2 & 3 ✓ Files stay on your device
A careful three-step workflow

Change the cover, not the book.

The tool reads the same package references ebook readers use, then rebuilds and checks a new EPUB.

01

Open your EPUB

We find the package document, current cover, book title, and EPUB version locally.

02

Frame the new cover

Choose Fit or Crop, preview the exact output, and inspect its dimensions before saving.

03

Build and check

Cover references are updated, the EPUB is rebuilt, and its key structure is checked before download.

What changes inside the EPUB

More precise than replacing a file named cover.jpg.

An EPUB can declare its cover in several ways. epubcover checks the package instead of guessing from filenames.

Read the EPUB cover guide →
package.opf
<!-- EPUB 3 -->
<item id="cover-image"
  href="Images/cover.jpg"
  media-type="image/jpeg"
  properties="cover-image" />

<!-- EPUB 2 -->
<meta name="cover"
  content="cover-image" />
Package-aware replacement

What changes—and what does not.

↗

Updated carefully

  • Cover image resource
  • Manifest media type
  • EPUB 2 or EPUB 3 cover metadata
  • Cover page and guide when required
✓

Preserved

  • Chapters and reading order
  • Navigation and table of contents
  • Stylesheets and embedded fonts
  • All unrelated images and files
⌁

Checked before download

  • Uncompressed first mimetype entry
  • Container and package document
  • Cover resource and declaration
  • Manifest-to-spine references
More private EPUB tools

Finish the rest of the book file workflow.

Each tool runs locally, handles one focused task, and creates no account or upload history.

01

Extract EPUB Cover

Download the original declared cover without recompression.

Open extractor → 02

EPUB Metadata Editor

Edit title, author, language, publisher, and description.

Edit metadata → 03

EPUB Validator

Check packaging, metadata, manifest, spine, and cover references.

Check an EPUB → 04

Resize Ebook Cover

Set exact dimensions, ratio, framing, and output format.

Resize a cover →
⌾
Private by architecture

Your book never leaves this tab.

The EPUB is opened, edited, rebuilt, and downloaded with browser APIs. There is no file upload endpoint.

How local processing works →
Common questions

Before you change a cover

Will changing the cover affect the book?

The tool changes the cover resource and the package references that point to it. Chapters, navigation, styles, fonts, and unrelated images are copied into the new EPUB.

Can it add a cover when the EPUB has none?

Yes. A cover image, manifest entry, cover page, and version-appropriate declaration are added when they are missing.

Does it support EPUB 2 and EPUB 3?

Yes. It recognizes EPUB 3 cover-image properties, EPUB 2 cover metadata, legacy guide references, and common cover pages.

Why does my reading app still show the old cover?

Some readers cache thumbnails. Remove the old copy completely, re-import the updated EPUB, and reopen the reading app.

Can it edit DRM-protected books?

No. Encrypted or DRM-protected cover resources cannot be changed, and epubcover does not remove or bypass protection.

What cover size should I use?

A portrait image around 1600 × 2560 px is a practical starting point, but stores and reading systems have different requirements. The tool shows the actual output size before download.