Download and install the latest version of Filestar.
Right click on one or more Htmlz file(s) on your desktop and select Convert with Filestar.
Type convert to oeb in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.htmlz -c "convert to oeb" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
Documents
Pictures
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.htmlzContract.htmlz
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert HTMLZ to OEB
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine. It works on Windows, macOS only.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the HTMLZ files in my Downloads folder to OEB”
Or run it yourself:
filestarcli -i file.htmlz -c "convert to oeb"
Runs on your computer, so your files stay on it. Works on Windows and macOS. 50 free conversions with the npm install, no account needed.
Can my AI agent convert HTMLZ to OEB?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.htmlz -c "convert to oeb" on your computer, so your files stay on it.
It is an eBook file that contains multiple files, such as .HTML files, metadata .OPF files, and images saved in a .ZIP archive file. The main purpose of HTLMZ is to package all eBook content in one file.
OEB is an XML based eBook file format. It is an open eBook Standard that can make order of the multiple sources and make the multiple sources into a single file. This file is DRM protected so the digital copyright of this book is available with this format. This format is used n online eBook stores.
