Files with htmlz file extension can be usually found as documents and publications in special Zipped HTML file format.

Detailed description

Software that open htmlz file

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HTMLZ file extension - Zipped HTML document or e-book

What is htmlz file? How to open htmlz files?

File type specification:

E-book file type icon E-book file type

The htmlz file extension is used for zip containers, that contains HTML file, metadata.opf file, images and other data to create an HTML document.

This format was often used in the past for e-books.

This htmlz file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Updated: March 24, 2024

The default software associated to open htmlz file:

Calibre icon

Kovid Goyal logoCalibre  Microsoft Windows software

Company or developer:
Kovid Goyal

A very popular, open source digital publication library management program for Microsoft Windows developed by e-book users for e-book users. It supports many common, and few uncommon e-book formats, like azw, cbc, cbr, cbz, epub, htmlz, lit etc.

Related articles:

Convert ebooks for free

Help how to open:

Several e-book readers can process this file type and view the publication. You can always decompress it using any ZIP archiver and check the source.

How to convert:

You can find e-book converters that can convert *.htmlz files to EPUB or some other ebook format.

Find conversions from htmlz file:

htmlz to diz

htmlz to epub

htmlz to html

htmlz to mobi

htmlz to pdf

Find converter to htmlz file type:

epub to htmlz

fb2 to htmlz

lit to htmlz

mobi to htmlz

snb to htmlz

tpz to htmlz

List of software applications associated to the .htmlz file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open htmlz file, edit htmlz file, convert htmlz file, view htmlz file, play htmlz file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting htmlz files.

htmlz file viewer - programs that view htmlz file - Zipped HTML document or e-book

Programs supporting the exension htmlz on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for view htmlz file action.

Microsoft Windows:

Apple macOS / Mac OS X:


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