Download and install the latest version of Filestar.
Right click on one or more Xlsb file(s) on your desktop and select Convert with Filestar.
Type convert to md in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.xlsb -c "convert to md" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
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.xlsbContract.xlsb
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert XLSB to MD
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 XLSB files in my Downloads folder to MD”
Or run it yourself:
filestarcli -i file.xlsb -c "convert to md"
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 XLSB to MD?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.xlsb -c "convert to md" on your computer, so your files stay on it.
The xlsb file type is a binary file format used to store Excel spreadsheets. It is a compressed version of the xlsx file type and can only be opened in the Microsoft Excel application. Compared to the xlsx, the xlsb format is much smaller in size and is less prone to corruption.
An MD file is a text file created using one of several possible dialects of the Markdown language. It is saved in plain text format but includes inline text symbols that define how to format the text (e.g., bold, indentations, headers, table formatting). MD files are designed for authoring plain text documentation that can be easily converted to HTML.
