Download and install the latest version of Filestar.
Right click on one or more Chw file(s) on your desktop and select Convert with Filestar.
Type convert to gzip in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.chw -c "convert to gzip" (how).
Documents - File Explorer─☐✕
This PC › Documents
Home
Desktop
Downloads
Documents
Pictures
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.chwContract.chw
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert CHW to GZIP
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 CHW files in my Downloads folder to GZIP”
Or run it yourself:
filestarcli -i file.chw -c "convert to gzip"
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 CHW to GZIP?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.chw -c "convert to gzip" on your computer, so your files stay on it.
A CHW file, or Compiled Help Index File, is a type of file associated with Microsoft Compiled HTML Help, a proprietary format for online help files developed by Microsoft. This file specifically stores the index for a help file, allowing users to search and locate information quickly within the help documentation. The CHW file works in conjunction with a CHM file, which contains the actual help content, including text, images, and navigation.
A compressed file format associated with GNU Zip (Gzip) that uses the DEFLATE compression algorithm, a combination of both the Huffman coding and the Lempel-Ziv (LZ77) codec.
