How to convert EPUB to HTMLZ
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert EPUB to HTMLZ
NexMedia converts EPUB to HTMLZ on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About EPUB
EPUB is the open ebook standard, now maintained by the W3C. An EPUB is a ZIP of XHTML pages, CSS and images, so the text reflows to fit any screen.
Ebooks from most stores and libraries, read in Apple Books, Kobo and Google Play Books, and on Kindle through Send to Kindle since 2022.
Store-bought EPUBs are often DRM-protected, and protected files cannot be converted.
Convert EPUB to HTMLZ online free, no account required — HTMLZ is a book as one HTML page, packed in a ZIP.
Change EPUB to HTMLZ without losing quality — convert EPUB to HTMLZ free in your browser.
Why does my EPUB book look completely different on every reader? EPUB is reflowable by design — text reshapes itself to each screen and font — so there is no fixed page layout to preserve.
About HTMLZ
HTMLZ is Calibre's format for a book as a single HTML page with its CSS and images, packed in a ZIP file.
Editing the text of a book in an HTML editor, or publishing it as a web page.
Few readers open HTMLZ directly; it is mainly an exchange format for Calibre.
Why convert an ebook to HTMLZ? As a compact archive copy that any browser can open once unzipped, preserving structure without a reader app.
What changes when you convert EPUB to HTMLZ
- Ebook conversion is best-effort: the text, images and table of contents of the EPUB carry over to HTMLZ, but layout and styling can change.
- Fixed layouts, embedded fonts and complex styling in the EPUB may not survive the move to HTMLZ.
- EPUB files can carry DRM copy protection; protected files are detected and refused, because copy protection is never removed.
Settings you can change
Before you convert EPUB to HTMLZ, you can adjust: Title, Author, Language, Page size, Base font size, and Generate table of contents.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted HTMLZ file is kept for 2 hours, then deleted.
EPUB to HTMLZ: questions and answers
Does converting EPUB to HTMLZ reduce quality?
Ebook conversion is best-effort: the text, images and table of contents of the EPUB carry over to HTMLZ, but layout and styling can change.
What is the difference between EPUB and HTMLZ?
EPUB is the open, reflowable ebook standard. HTMLZ is a book as one HTML page, packed in a ZIP.
Can I change the settings when converting EPUB to HTMLZ?
Before you convert EPUB to HTMLZ, you can adjust: Title, Author, Language, Page size, Base font size, and Generate table of contents.
Do I need an account to convert EPUB to HTMLZ?
No. You can convert EPUB to HTMLZ without an account; signing in raises the file-size and daily limits.
How long is my converted HTMLZ file kept?
The HTMLZ file you convert from EPUB is kept for 2 hours, then deleted automatically.
Will the page layout of my EPUB survive in the HTMLZ?
Fixed layouts, embedded fonts and complex styling in the EPUB may not survive the move to HTMLZ.
What happens if my EPUB file is copy-protected?
EPUB files can carry DRM copy protection; protected files are detected and refused, because copy protection is never removed.