JEF is the native embroidery format for Janome and Elna machines. With SewFlow you can skip sourcing artwork entirely — describe what you want, let AI generate it, and download a JEF file ready to load on your machine.
Step-by-Step: AI to JEF
- 1Open sewflow.com/ai.
- 2Type your design description and pick an optional style.
- 3Click Generate Design.
- 4In the converter, set your hoop size and adjust thread colors.
- 5Select JEF as the output format.
- 6Preview the stitches, then click Download JEF.
- 7Copy the .jef file to a USB stick in the EMBF folder and load it on your Janome or Elna machine.
Generate an AI design and export it as JEF:
Open AI to Embroidery →About the JEF Format
JEF (Janome Embroidery Format) stores absolute needle positions, color-change commands, and jump stitches. It is read by most Janome Memory Craft and Horizon models, as well as many Elna Expressive machines. SewFlow writes byte-correct JEF headers so your design loads without errors.
Tips for Clean JEF Output
- •Steer prompts toward flat, bold artwork with few colors.
- •Keep designs above 30 mm so fine details survive in thread.
- •Use the preview to catch cramped fills before downloading.
- •Test stitch on scrap fabric first.
JEF+ Compatible
If your machine uses JEF+, SewFlow's standard JEF output works perfectly — JEF+ is a superset and reads .jef files without issue.