Convert fts to jng

Download and install the latest version of Filestar.
Right click on one or more Fts 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 photo.fts -c "convert to jng" (how).

Let your AI agent convert FTS 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 FTS files in my Downloads folder to JNG”

Or run it yourself:

filestarcli -i photo.fts -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 FTS to JNG?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.fts -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 .fts and .jng?

Name: Flexible Image Transport System; JPEG Network Graphic
Extension: .fts; .jng
Format: Binary; Binary
Category: Raster Image; Raster Image
Developer: IAU FITS Working Group; Mozilla Corporation
Description: FTS file format is used to edit, store and transmit images with metadata (data with spatial and photometric calibrations) for scientific purposes. Most times it stores the data without the actual associated 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: image/fits; image/x-jng
Sample: sample.fts; sample.jng
Wikipedia: .fts on Wikipedia; .jng on Wikipedia

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