Download and install the latest version of Filestar.
Right click on one or more Q3s file(s) on your desktop and select Convert with Filestar.
Type convert to json in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.q3s -c "convert to json" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
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.q3sContract.q3s
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert Q3S to JSON
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 Q3S files in my Downloads folder to JSON”
Or run it yourself:
filestarcli -i file.q3s -c "convert to json"
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 Q3S to JSON?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.q3s -c "convert to json" on your computer, so your files stay on it.
Q3S is a file type used by Quick3D Scene, a program for creating and editing 3D models. It contains a 3D scene, including the geometry, textures, lighting, and animations of the 3D model. It is used to save and open 3D models created with Quick3D Scene.
A JSON (JavaScript Object Notation) file is a lightweight, text-based, human-readable format used for data interchange. It is designed to store and transport data. JSON files use the .json file extension and are structured as a collection of name/value pairs, where the names are strings, and the values can be strings, numbers, arrays, or even other JSON objects. This format is widely used in web applications for exchanging data between a client and a server, as well as in configuration files.
