Download and install the latest version of Filestar.
Right click on one or more Xltx file(s) on your desktop and select Convert with Filestar.
Type convert to xhtml in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.xltx -c "convert to xhtml" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
Music
.xltxContract.xltx
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert XLTX to XHTML
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine. It works on Windows, macOS only.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the XLTX files in my Downloads folder to XHTML”
Or run it yourself:
filestarcli -i file.xltx -c "convert to xhtml"
Runs on your computer, so your files stay on it. Works on Windows and macOS. 50 free conversions with the npm install, no account needed.
Can my AI agent convert XLTX to XHTML?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.xltx -c "convert to xhtml" on your computer, so your files stay on it.
An XLTX file is a template created by Microsoft Excel, a program used for creating spreadsheets.
XHTML files are a type of markup language document used to create webpages. It is an XML-based version of HTML and is designed to meet the needs of Web developers. XHTML files have a .xhtml extension and can be viewed in any web browser.