Download and install the latest version of Filestar.
Right click on one or more St7 file(s) on your desktop and select Convert with Filestar.
Type convert to heif in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.st7 -c "convert to heif" (how).
Documents - File Explorer─☐✕
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.st7Contract.st7
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Drop files here to get started
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Let your AI agent convert ST7 to HEIF
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 ST7 files in my Downloads folder to HEIF”
Or run it yourself:
filestarcli -i file.st7 -c "convert to heif"
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 ST7 to HEIF?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.st7 -c "convert to heif" on your computer, so your files stay on it.
The ST7 file type is associated with images captured by SBIG CCD cameras, specifically the ST-X series, which are designed for astronomical imaging. These files contain raw data from the camera's charge-coupled device (CCD), recording detailed information about celestial objects as seen through the telescope with which the camera is paired. The format is primarily used by astronomers and astrophotography enthusiasts for deep-sky imaging, allowing for post-processing to enhance detail, correct for atmospheric distortion, and calibrate colors. Given their specialized nature, ST7 files typically require specific software to open, analyze, and process the data they contain.
Based on HEVC (High-Efficiency Video Coding), the HEIF format is an image file container with one or multiple images and is the default image format for Apple Live Photos. It replaced the JPEG format as it's smaller in size and has lossless compression ensuring high-quality photos.
