Guides & Articles
Practical guides for working with EPUB files. Learn how to merge, split, compress, convert, and edit your ebooks.
- How to Merge EPUB Files
Learn how to combine multiple EPUB files into one ebook. Step-by-step guide with 3 free methods including our online merger tool.
- How to Convert EPUB to PDF
Convert EPUB to PDF in seconds. Free online method, desktop apps, and command-line options. No watermarks, no sign up required.
- How to Reduce EPUB File Size
Shrink your EPUB files by up to 70%. Learn image compression, font subsetting, and cleanup techniques for smaller ebooks.
- How to Edit EPUB Metadata
Edit EPUB metadata including title, author, cover image, and description. Free online editor and Calibre walkthrough.
- Looking for a Calibre Alternative?
Epublys is a free online alternative to Calibre for quick EPUB edits. No install needed. Merge, split, compress, and edit EPUBs in your browser.
- Sigil Alternative for EPUB Editing
Edit EPUB files without installing Sigil. Epublys offers free online EPUB tools for merging, splitting, metadata editing, and validation.
- EPUB vs PDF: Complete Comparison
EPUB vs PDF - which ebook format should you use? Compare reflowable text, DRM, file size, reader support, and when to convert between them.
- Best Free Online EPUB Tools
Complete list of the best free EPUB tools for 2026. Merge, split, compress, convert, edit, and validate EPUB files online.
- Convert EPUB to PDF Without Watermarks
Free EPUB to PDF converter with no watermarks, no sign up, no limits. Convert your ebooks to clean PDF files instantly.
- Merge EPUB Files for Free
Combine multiple EPUB ebooks into one file completely free. No account needed, no watermarks, no file limits. Just drag and drop.
- How to Send EPUB to Kindle
Send EPUB files to your Kindle in minutes. Learn 3 methods: Send to Kindle email, Calibre conversion, and the Kindle app. Step-by-step guide.
- How to Open EPUB Files
Learn how to open and read EPUB files on Windows, Mac, iPhone, iPad, Android, and Kindle. Free EPUB readers and built-in options for every device.
- What Is an EPUB File?
EPUB is the most popular ebook format. Learn what EPUB files are, how they work, which devices support them, and how to create, edit, and convert EPUBs.
- EPUB vs MOBI: Complete Comparison
EPUB vs MOBI — which ebook format is better? Amazon dropped MOBI support in 2023. Learn why EPUB won, and how to convert your MOBI files.
- How to Add a Cover Image to Your EPUB
Add or replace the cover image in any EPUB file. Free online tool — upload your EPUB, choose a JPG or PNG cover, and download. No software needed.
- How to Convert PDF to EPUB
Convert PDF files to EPUB ebook format. 3 free methods: online converter, Calibre, and command line. Step-by-step guide with tips for best results.
- How to Read EPUB on Android
Open and read EPUB files on any Android phone or tablet. Best free EPUB reader apps for Android, plus how to upload EPUBs to Google Play Books.
- EPUB to Kindle Format
Convert EPUB to Kindle format or send EPUB files directly to your Kindle. Step-by-step guide covering Send to Kindle, Calibre conversion, and PDF fallback.
- Best Free EPUB Readers
The best free EPUB reader apps for Windows, Mac, Android, iPhone, and Linux in 2026. Detailed comparison with pros, cons, and download links.
- How to Create an EPUB File
Learn how to create EPUB ebook files from scratch, from Word documents, or from HTML. Covers Sigil, Calibre, Pandoc, and online tools.