Download and install the latest version of Filestar.
Right click on one or more Fbz file(s) on your desktop and select Convert with Filestar.
Type convert to kepub in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.fbz -c "convert to kepub" (how).
Documents - File Explorer─☐✕
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.fbzContract.fbz
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert FBZ to KEPUB
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.
“Convert the FBZ files in my Downloads folder to KEPUB”
Or run it yourself:
filestarcli -i file.fbz -c "convert to kepub"
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 FBZ to KEPUB?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.fbz -c "convert to kepub" on your computer, so your files stay on it.
The FBZ file type is associated with FlashBack Screen Recorder, a program developed by Blueberry Software. It is used to store screen recordings captured with the FlashBack application. These recordings can include video of the screen, audio, and even webcam footage, making it a versatile tool for creating tutorials, presentations, or any content that requires capturing on-screen activity. The FBZ file format is specifically designed for use within the FlashBack software, allowing users to edit, save, or export their recordings.
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.