Download and install the latest version of Filestar.
Right click on one or more Gbr file(s) on your desktop and select Convert with Filestar.
Type convert to thm in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.gbr -c "convert to thm" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
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Pictures
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.gbrContract.gbr
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert GBR to THM
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 GBR files in my Downloads folder to THM”
Or run it yourself:
filestarcli -i photo.gbr -c "convert to thm"
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 GBR to THM?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.gbr -c "convert to thm" on your computer, so your files stay on it.
The GBR file format is associated with GIMP (GNU Image Manipulation Program), a freely distributed image editing software. It is specifically used to store custom brush designs that can be used within the GIMP software for various drawing and painting purposes. These brush files allow users to create and save their own brush patterns, shapes, and textures, enhancing their digital artwork and editing capabilities. The GBR format enables easy sharing and distribution of custom brushes within the GIMP user community.
THM files are video thumbnail files that contain a small image or "thumbnail" of a video file. They are usually generated automatically by media players or video transcoding software and are used to provide a preview of the video.
