Download and install the latest version of Filestar.
Right click on one or more Npm 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 photo.npm -c "convert to webp" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
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.npmContract.npm
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert NPM 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.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the NPM files in my Downloads folder to WEBP”
Or run it yourself:
filestarcli -i photo.npm -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 NPM to WEBP?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.npm -c "convert to webp" on your computer, so your files stay on it.
The npm file type, associated with Neopaint Mask, is a specific format used by Neopaint, a painting and image editing software. These files typically contain mask data that can be applied to images within the Neopaint program, allowing users to selectively edit, enhance, or manipulate parts of an image. Npm files are used to preserve the mask settings and configurations, enabling users to reapply or adjust the mask in future editing sessions. This file type is particularly useful for graphic artists and photographers who require precise control over selective editing in their digital workflows.
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.
