Download and install the latest version of Filestar.
Right click on one or more Kepub file(s) on your desktop and select Convert with Filestar.
Type convert to pdb in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.kepub -c "convert to pdb" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
Documents
Pictures
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.kepubContract.kepub
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert KEPUB to PDB
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 KEPUB files in my Downloads folder to PDB”
Or run it yourself:
filestarcli -i file.kepub -c "convert to pdb"
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 KEPUB to PDB?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.kepub -c "convert to pdb" on your computer, so your files stay on it.
A KEPUB file is an EPUB ebook with extra Kobo markup (koboSpan elements and a kobo.js script) that Kobo e-readers use for their faster renderer, page statistics and highlighting. It is usually saved as .kepub.epub; any EPUB reader can open it.
Standard data format used by several different programs on Palm-based PDA devices; may store various types of data, such as eBooks, word processing documents, spreadsheets, databases, maps, and image files.