Download and install the latest version of Filestar.
Right click on one or more X11 file(s) on your desktop and select Convert with Filestar.
Type convert to webp in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.x11 -c "convert to webp" (how).
Documents - File Explorer─☐✕
This PC › Documents
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.x11Contract.x11
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert X11 to WEBP
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine. It works on Windows, macOS only.
“Convert the X11 files in my Downloads folder to WEBP”
Or run it yourself:
filestarcli -i file.x11 -c "convert to webp"
Runs on your computer, so your files stay on it. Works on Windows and macOS. 50 free conversions with the npm install, no account needed.
Can my AI agent convert X11 to WEBP?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.x11 -c "convert to webp" on your computer, so your files stay on it.
The X11 file type, associated with the X Windows System, is a format designed to contain screen or window dumps (screenshots) from the X Window System, a windowing system for bitmap displays common on UNIX-like operating systems. These dumps are essentially captures of the graphical output of applications running within the X environment, saved in a format that can be viewed or analyzed later. The X Window System serves as the foundational graphical interface for many Linux and UNIX systems, facilitating a wide range of graphical applications. X11 files enable users to save and share the state of a graphical interface at a specific point in time, useful for documentation, debugging, or graphic design purposes.
A WEBP file is an image saved in the WebP (pronounced "Weppy") raster image format developed by Google for web graphics. It is designed to reduce image file sizes over standard JPEG compression while maintaining the same or similar quality. WEBP files allow images to be downloaded more quickly.