Download and install the latest version of Filestar.
Right click on one or more Pct file(s) on your desktop and select Convert with Filestar.
Type convert to j2k in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.pct -c "convert to j2k" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
Documents
Pictures
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.pctContract.pct
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert PCT to J2K
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 PCT files in my Downloads folder to J2K”
Or run it yourself:
filestarcli -i photo.pct -c "convert to j2k"
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 PCT to J2K?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.pct -c "convert to j2k" on your computer, so your files stay on it.
A PCT file is an image saved in the Macintosh PICT format, which was developed by Apple in 1984 for storing images using Apple QuickDraw technology. It contains image data in one of two formats, PICT 1, the original format that stores 8 colors, or PICT 2, a newer format that allows thousands of colors (24 and 32-bit images). PCT files support both raster and vector images.
Compressed bitmap image that uses wavelet compression instead of the DCT compression used by standard .JPEG images; supports 16-bit color, alpha transparency, and lossless compression.
