Download and install the latest version of Filestar.
Right click on one or more Dat file(s) on your desktop and select Convert with Filestar.
Type convert to gif in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.dat -c "convert to gif" (how).
Let your AI agent convert zlib Compressed Data to GIF
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 zlib Compressed Data files in my Downloads folder to GIF”
Or run it yourself:
filestarcli -i file.dat -c "convert to gif"
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 zlib Compressed Data to GIF?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.dat -c "convert to gif" on your computer, so your files stay on it.
A raw zlib (RFC 1950) compressed stream: a 0x78 header byte (commonly 78 9C), a deflate body and an Adler-32 checksum at the end. Filestar inflates the stream and then converts whatever the decompressed data turns out to be - often an image or a document.
A GIF file is an image file often used for web graphics. It may contain up to 256 indexed colors with a color palette that may be a predefined set of colors or may be adapted to the colors in the image. GIF files are saved in a lossless format, meaning the clarity of the image is not compromised with GIF compression.
