How to convert HTMLZ to EPUB
- 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 HTMLZ to EPUB
NexMedia converts HTMLZ to EPUB 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 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.
Convert HTMLZ to EPUB online free, no account required — EPUB is the open, reflowable ebook standard.
Change HTMLZ to EPUB without losing quality — convert HTMLZ to EPUB free in your browser.
Why won’t any e-reader open my HTMLZ book directly? It is a whole web page zipped into one file, a storage format no reader unpacks — converting to EPUB gives the book the structure readers actually display.
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.
Why convert an ebook to EPUB? It is the open standard every non-Amazon reader uses, and libraries and stores distribute it.
What changes when you convert HTMLZ to EPUB
- Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to EPUB, but layout and styling can change.
- Fixed layouts, embedded fonts and complex styling in the HTMLZ may not survive the move to EPUB.
Settings you can change
Before you convert HTMLZ to EPUB, 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 EPUB file is kept for 2 hours, then deleted.
HTMLZ to EPUB: questions and answers
Does converting HTMLZ to EPUB reduce quality?
Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to EPUB, but layout and styling can change.
What is the difference between HTMLZ and EPUB?
HTMLZ is a book as one HTML page, packed in a ZIP. EPUB is the open, reflowable ebook standard.
Can I change the settings when converting HTMLZ to EPUB?
Before you convert HTMLZ to EPUB, you can adjust: Title, Author, Language, Page size, Base font size, and Generate table of contents.
Do I need an account to convert HTMLZ to EPUB?
No. You can convert HTMLZ to EPUB without an account; signing in raises the file-size and daily limits.
How long is my converted EPUB file kept?
The EPUB file you convert from HTMLZ is kept for 2 hours, then deleted automatically.
Will the page layout of my HTMLZ survive in the EPUB?
Fixed layouts, embedded fonts and complex styling in the HTMLZ may not survive the move to EPUB.
Will my EPUB look exactly like my HTMLZ?
Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to EPUB, but layout and styling can change.