Convert cube to jng

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 jng in the search box.
Press Convert.

Or let an AI agent do it: filestarcli -i file.cube -c "convert to jng" (how).

Let your AI agent convert CUBE to JNG

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

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the CUBE files in my Downloads folder to JNG”

Or run it yourself:

filestarcli -i file.cube -c "convert to jng"

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 JNG?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.cube -c "convert to jng" on your computer, so your files stay on it.

Using Filestar With AI Agents · Download SKILL.md

What is the difference between .cube and .jng?

Name: Cube Color Lookup Table; JPEG Network Graphic
Extension: .cube; .jng
Format: Text; Binary
Category: Color Lookup Table; Raster Image
Developer: Kodak; Mozilla Corporation
Description: 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.; Image file format related to the .PNG format, but uses lossy compression like standard .JPG files; developed as a sub-format for .MNG objects, but can also be used as a standalone raster image format.
MIME Type: text/plain; image/x-jng
Sample: sample.cube; sample.jng
Wikipedia: .cube on Wikipedia; .jng on Wikipedia

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