HTMLZ Converter

Convert Zipped HTML eBooks (HTMLZ) online for free


Drop or upload your .HTMLZ file
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How to convert your HTMLZ file

  1. Click the "Select File" button above, and choose your HTMLZ file.
  2. You'll see a preview.
  3. Click the "Convert file to..." button to save your file in the format you want.

Convert HTMLZ to another file type

The converter easily converts your HTMLZ eBooks to various formats - free and online. No Calibre or or other E-Book software needed.

  • HTMLZ to PDF
  • HTMLZ to EPUB
  • HTMLZ to MOBI
  • HTMLZ to AZW3
  • HTMLZ to LIT
  • HTMLZ to PDB
  • HTMLZ to FB2
  • HTMLZ to TXT
  • HTMLZ to TCR
  • HTMLZ to LRF
  • HTMLZ to TXTZ
  • HTMLZ to DOCX

Convert a file to HTMLZ

The converter also works in reverse, so you can convert other "Zipped HTML eBook Archive" formats to HTMLZ without using software like Calibre or a similar tool.

  • FB2 to HTMLZ
  • MOBI to HTMLZ
  • RTF to HTMLZ
  • CB7 to HTMLZ
  • DOCX to HTMLZ
  • DJVU to HTMLZ
  • AZW to HTMLZ
  • PDF to HTMLZ
  • EPUB to HTMLZ
  • TXT to HTMLZ
  • HTML to HTMLZ
  • FBZ to HTMLZ

About HTMLZ files

The .HTMLZ format is a compressed ZIP archive containing a primary HTML file, accompanying images, CSS stylesheets, and Open Packaging Format (OPF) metadata. It serves as a container format designed primarily by the Calibre eBook management software to bundle complex web-based book content into a single manageable file. You can read more about standard eBook formats on Wikipedia. The main disadvantage of the .HTMLZ format is its poor native support. Unlike standard EPUB or PDF files, major eReaders like Amazon Kindle or Kobo cannot open .HTMLZ archives directly. Furthermore, standard web browsers cannot render the archive without extracting it first. Users are often forced to install bulky library software just to read a single document. To make the file usable on standard devices, you must convert it. For broad compatibility across Apple Books, Google Play Books, and Kobo, convert to EPUB. If you use a Kindle, convert to AZW3 or MOBI. For long-term archiving or printing, convert to PDF. Note that converting to PDF will bake the reflowable text into fixed pages, which means you lose dynamic text resizing features. Just drag and drop your file here to analyze and convert it securely right in your browser - free, online, and without installing software.

Use Convert.Guru to open and convert your HTMLZ file.

Users also converted PDF files.


FAQ

If you want to convert HTMLZ file to AZW, KFX, PRC, OPF, CBZ, CBR or CB7, you can use Calibre or similar software from the "eBook Archive Storage" category. In the File menu, look for Save As… or Export….

To convert CBT, CBA or DOC files to HTMLZ, try Calibre or another comparable tool in the "eBook Archive Storage" category.



The HTMLZ Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our HTMLZ converter.