Download and install the latest version of Filestar.
Right click on one or more Ico file(s) on your desktop and select Convert with Filestar.
Type convert to blk in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.ico -c "convert to blk" (how).
Pictures - File Explorer─☐✕
This PC › Pictures
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.icoMarket.ico
.heicBeach.heic
.pdfReceipt.pdf
.docxNotes.docx
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert ICO to BLK
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 ICO files in my Downloads folder to BLK”
Or run it yourself:
filestarcli -i photo.ico -c "convert to blk"
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 ICO to BLK?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.ico -c "convert to blk" on your computer, so your files stay on it.
An ICO file is an image format used to store icons for Windows programs, files, and folders. It contains two bitmaps: 1) the AND bitmap - the image mask (which determines what part of the icon is transparent) and 2) the XOR bitmap - contains the icon which is mapped onto the image mask. ICO files can be modified to create custom icons.
The BLK file type is associated with the Amiga computer system, specifically within the context of the Interchange File Format (IFF), which was widely used on Amiga systems for various types of multimedia data. BLK files typically contain block data, which could be used for storing graphics, animation frames, or map tiles for video games and other graphical applications. The IFF format is a container format, meaning that it can hold various types of data structures, with BLK files being specifically tailored for graphical block data. These files were integral to the development and distribution of content for the Amiga platform, especially during its peak in the late 1980s and early 1990s.
