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Convert fax to sixel

  1. Download and install the latest version of Filestar.

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

  3. Type convert to sixel in the search box.

  4. Press Convert.

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

Let your AI agent convert FAX to SIXEL

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

Or add it in one click:

Claude Code:

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

Then ask your agent:

“Convert the FAX files in my Downloads folder to SIXEL”

Or run it yourself:

filestarcli -i file.fax -c "convert to sixel"

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 FAX to SIXEL?

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

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .fax and .sixel?

Name
Group 3 FAX
DEC SIXEL Graphics Format
Extension
.fax
.sixel
Format
Binary
Binary
Category
Fax
Raster Image
Developer
ITU-T
Digital Equipment Corporation (DEC)
Description
This format is used to compress TIFF images when sending them via fax machines. This format helps reduce the data transmission time. Group 3 eliminates redundant data during compression in order to reduce file size. The standard 10:1 compression ratio may be increased to the user's preferences, but it can lead to a significant loss of image quality.
Created by Digital Equipment Corporation (DEC), SIXEL is a bitmap image format in an escaped sequence (seen as six pixels high and one pixel wide). You have to convert it into a more accessible format if you don’t have a DEC terminal to view it.
MIME Type
application/vnd.fax
image/vnd.dwg
Wikipedia
.sixel on Wikipedia

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