Convert eff to jef

Download and install the latest version of Filestar.
Right click on one or more Eff file(s) on your desktop and select Convert with Filestar.
Type convert to jef in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.eff -c "convert to jef" (how).

Let your AI agent convert EFF to JEF

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 EFF files in my Downloads folder to JEF”

Or run it yourself:

filestarcli -i file.eff -c "convert to jef"

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 EFF to JEF?

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

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .eff and .jef?

Name: EFF Cross-Stitch Chart; Janome Embroidery Format
Extension: .eff; .jef
Format: Text
Category: Embroidery; Embroidery
Developer: Janome
Description: A cross-stitch chart saved as JSON by an embroidery chart app; one design object holding the canvas size, the cross grid size and every cross's colour and position. The field names are transliterated Ukrainian (VushuvkaName, Hrestiks), and the file starts with a JSON array opening.; Embroidery format used by Janome sewing machines; contains stitching patterns and sewing instructions for creating embroideries; native format used by Janome sewing software, but also recognized by Embrid Suite.
MIME Type: application/json; application/x-jef
Sample: sample.eff; sample.jef

Embroidery

Machines that use JEF: Janome · Elna

What a conversion keeps

Stitches: Every stitch is kept at its exact position. Nothing is re-digitised.
Colours: Kept when the target stores them. DST stores no colours, only where each colour changes, so your machine asks for the threads.
Trims, jumps and stops: Kept, and written the way the target machine expects them.
Objects and lettering: Design programs keep shapes and text as objects. A machine file only holds stitches, so objects become stitches.

All Embroidery Formats and Machines →

Convert Eff To Jef Today

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