How to convert HTMLZ to Kindle (AZW3)
- 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 Kindle (AZW3)
NexMedia converts HTMLZ to Kindle (AZW3) 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 AZW3 online free, no account required — AZW3 is Amazon's Kindle Format 8 ebook format.
Change HTMLZ to AZW3 without losing quality — convert HTMLZ to AZW3 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 Kindle (AZW3)
AZW3, also called KF8, is Amazon's Kindle Format 8, introduced in 2011 with HTML5 and CSS3 formatting.
Kindle ebooks with a richer layout than MOBI; Kindle devices and Calibre read it.
Books bought from Amazon usually carry DRM, and DRM-protected files cannot be converted.
Why convert an ebook to AZW3? To load it onto a Kindle in Amazon’s native format, with better typography support than old MOBI.
What changes when you convert HTMLZ to AZW3
- Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to AZW3, but layout and styling can change.
- Fixed layouts, embedded fonts and complex styling in the HTMLZ may not survive the move to AZW3.
Settings you can change
Before you convert HTMLZ to AZW3, 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 AZW3 file is kept for 2 hours, then deleted.
HTMLZ to AZW3: questions and answers
Does converting HTMLZ to AZW3 reduce quality?
Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to AZW3, but layout and styling can change.
What is the difference between HTMLZ and AZW3?
HTMLZ is a book as one HTML page, packed in a ZIP. AZW3 is Amazon's Kindle Format 8 ebook format.
Can I change the settings when converting HTMLZ to AZW3?
Before you convert HTMLZ to AZW3, 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 AZW3?
No. You can convert HTMLZ to AZW3 without an account; signing in raises the file-size and daily limits.
How long is my converted AZW3 file kept?
The AZW3 file you convert from HTMLZ is kept for 2 hours, then deleted automatically.
Will the page layout of my HTMLZ survive in the AZW3?
Fixed layouts, embedded fonts and complex styling in the HTMLZ may not survive the move to AZW3.
Will my AZW3 look exactly like my HTMLZ?
Ebook conversion is best-effort: the text, images and table of contents of the HTMLZ carry over to AZW3, but layout and styling can change.