Convert crx to xpi

  1. Download and install the latest version of Filestar.

  2. Right click on one or more Crx file(s) on your desktop and select Convert with Filestar.

  3. Type convert to xpi in the search box.

  4. Press Convert.

Or let an AI agent do it: filestarcli -i file.crx -c "convert to xpi" (how).

Let your AI agent convert CRX to XPI

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 CRX files in my Downloads folder to XPI”

Or run it yourself:

filestarcli -i file.crx -c "convert to xpi"

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 CRX to XPI?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.crx -c "convert to xpi" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .crx and .xpi?

Extension
.crx
.xpi
Format
Binary
Binary
Category
Data
Data
Developer
Google
W3C's Efficient Extensible Interchange Working Group
Description
A CRX file is a browser extension used by Google Chrome and other Chromium-based browsers. It contains the files needed to add features and functionality to the browser.
Efficient XML Interchange (EXI) is a binary XML format for exchange of data on a computer network. It was developed by the W3C's Efficient Extensible Interchange Working Group and is one of the most prominent efforts to encode XML documents in a binary data format, rather than plain text. Using EXI format reduces the verbosity of XML documents as well as the cost of parsing. Improvements in the performance of writing (generating) content depends on the speed of the medium being written to, the methods and quality of actual implementations.
MIME Type
application/x-chrome-extension
application/x-xpinstall

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