Filestar*
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Convert efx to webp

  1. Download and install the latest version of Filestar.

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

  3. Type convert to webp in the search box.

  4. Press Convert.

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

Let your AI agent convert EFX to WEBP

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

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the EFX files in my Downloads folder to WEBP”

Or run it yourself:

filestarcli -i file.efx -c "convert to webp"

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 EFX to WEBP?

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

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .efx and .webp?

Name
Everex Everfax
WebP Image
Extension
.efx
.webp
Format
Binary
Binary
Category
Fax
Raster Image
Developer
Everex
Google
Description
EFX files are associated with Everex Everfax, a type of fax document created by the Everex fax software. This file format was used for storing and sending fax documents electronically, allowing users to manage fax communications directly from their computers. The EFX format contains all the necessary information to accurately reproduce the faxed document, including text and images. Everex Systems was a prominent computer manufacturer and software company during the late 1980s and 1990s, and its Everfax product was among the early solutions integrating fax technology with personal computing.
A WEBP file is an image saved in the WebP (pronounced "Weppy") raster image format developed by Google for web graphics. It is designed to reduce image file sizes over standard JPEG compression while maintaining the same or similar quality. WEBP files allow images to be downloaded more quickly.
MIME Type
application/vnd.efax
image/webp
Sample
sample.webp
Wikipedia
.webp on Wikipedia

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