Download and install the latest version of Filestar.
Right click on one or more Blk file(s) on your desktop and select Convert with Filestar.
Type convert to jxr in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.blk -c "convert to jxr" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
Music
.blkContract.blk
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert BLK to JXR
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 BLK files in my Downloads folder to JXR”
Or run it yourself:
filestarcli -i photo.blk -c "convert to jxr"
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 BLK to JXR?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.blk -c "convert to jxr" on your computer, so your files stay on it.
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.
Image stored in the JPEG XR format, which was originally developed by Microsoft for Windows Media software; supports deep color images with 48-bit RGB; used for high-resolution professional image editing; also supports lossless and lossy compression.
