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 xlam in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.xlsb -c "convert to xlam" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
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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 XLAM
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 XLAM”
Or run it yourself:
filestarcli -i file.xlsb -c "convert to xlam"
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 XLAM?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.xlsb -c "convert to xlam" 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.
xlam (Excel Open XML Macro-Enabled Add-In) is a file type used in Microsoft Excel which contains code written in Visual Basic for Applications (VBA). It is used to store and deploy macros, custom user forms, and other Excel add-in components. xlam files can be opened and edited in Excel, but they are not as secure as other Excel file types.
