Download and install the latest version of Filestar.
Right click on one or more Cube file(s) on your desktop and select Convert with Filestar.
Type convert to jbg in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.cube -c "convert to jbg" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
Music
.cubeContract.cube
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert CUBE to JBG
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the CUBE files in my Downloads folder to JBG”
Or run it yourself:
filestarcli -i file.cube -c "convert to jbg"
Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.
Can my AI agent convert CUBE to JBG?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.cube -c "convert to jbg" on your computer, so your files stay on it.
A cube file, also known as a Cube Color Lookup Table, is a color palette file type used in the fields of 3D graphics and media production. It stores a 3D cube of color values which can be used to map colors in 3D images.
Created by JBIG (Joint Bi-level Image Experts Group), JBG is a lossless file format that contains both colored and monochrome images. Commonly used to compress fax images, and it has better compression than G3 and G4 compression codecs.
