Download and install the latest version of Filestar.
Right click on one or more Pgm file(s) on your desktop and select Convert with Filestar.
Type convert to rgba in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.pgm -c "convert to rgba" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
Music
.pgmContract.pgm
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert PGM to RGBA
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 PGM files in my Downloads folder to RGBA”
Or run it yourself:
filestarcli -i photo.pgm -c "convert to rgba"
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 PGM to RGBA?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.pgm -c "convert to rgba" on your computer, so your files stay on it.
A PGM file is a grayscale image file saved in the portable gray map (PGM) format and encoded with one or two bytes (8 or 16 bits) per pixel. It contains header information and a grid of numbers that represent different shades of gray from black (0) to white (up to 65,536). PGM files are typically stored in ASCII text format, but also have a binary representation.
An RGBA file is a color bitmap image format created by Silicon Graphics (SGI). It is similar to the .RGB file as it supports color RGB channels with an alpha channel.
