How to convert HTMLZ to MOBI
- 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 MOBI
NexMedia converts HTMLZ to MOBI 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 MOBI online free, no account required — MOBI is the Mobipocket ebook format of early Kindles.
Change HTMLZ to MOBI without losing quality — convert HTMLZ to MOBI 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 MOBI
MOBI is the Mobipocket ebook format, which Amazon acquired in 2005 and used for the first Kindles.
Older Kindle devices and ebook collections from before AZW3.
MOBI supports only basic formatting, and Amazon's Send to Kindle no longer accepts MOBI files.
Why convert an ebook to MOBI? For very old Kindles that predate EPUB support; anything modern reads EPUB or AZW3.
What changes when you convert HTMLZ to MOBI
- Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to MOBI, but layout and styling can change.
- Fixed layouts, embedded fonts and complex styling in the HTMLZ may not survive the move to MOBI.
Settings you can change
Before you convert HTMLZ to MOBI, 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 MOBI file is kept for 2 hours, then deleted.
HTMLZ to MOBI: questions and answers
Does converting HTMLZ to MOBI reduce quality?
Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to MOBI, but layout and styling can change.
What is the difference between HTMLZ and MOBI?
HTMLZ is a book as one HTML page, packed in a ZIP. MOBI is the Mobipocket ebook format of early Kindles.
Can I change the settings when converting HTMLZ to MOBI?
Before you convert HTMLZ to MOBI, 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 MOBI?
No. You can convert HTMLZ to MOBI without an account; signing in raises the file-size and daily limits.
How long is my converted MOBI file kept?
The MOBI file you convert from HTMLZ is kept for 2 hours, then deleted automatically.
Will the page layout of my HTMLZ survive in the MOBI?
Fixed layouts, embedded fonts and complex styling in the HTMLZ may not survive the move to MOBI.
Will my MOBI look exactly like my HTMLZ?
Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to MOBI, but layout and styling can change.