Download and install the latest version of Filestar.
Right click on one or more Jxl file(s) on your desktop and select Convert with Filestar.
Type auto level filter in the search box.
Press Run.
Or let an AI agent do it: filestarcli -i photo.jxl -c "auto level filter" (how).
Let your AI agent auto level JXL filter
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:
“Use Filestar to auto level JXL filter in my Downloads folder”
Or run it yourself:
filestarcli -i photo.jxl -c "auto level filter"
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 auto level JXL filter?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.jxl -c "auto level filter" on your computer, so your files stay on it.
A JPEG XL file is an image saved in a compressed graphic format currently under development by the Joint Photographic Experts Group (JPEG). It supports wide color gamut and HDR (High Dynamic Range), alpha channels and animation frames while providing visually lossless compression. Images can be converted back and forth between JPEG XL and JPEG without loss of quality. Converting a regular JPEG to JPEG XL reduces the file size by 22%. JPEG XL files can be used to store any type of image content.
