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 extract in the search box.
Press Extract.
Or let an AI agent do it: filestarcli -i file.dat -c "extract" (how).
Let your AI agent extract zlib Compressed Data
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:
“Use Filestar to extract zlib Compressed Data in my Downloads folder”
Or run it yourself:
filestarcli -i file.dat -c "extract"
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 extract zlib Compressed Data?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.dat -c "extract" 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.
