BMP to JEF Converter
Upload a BMP image and download a machine-ready JEF embroidery file for Janome & Elna machines — automatic digitizing with a free animated stitch preview.
Drop your BMP here
or click to browse — your JEF downloads after a free preview
JEF is preselected · other image types work too · up to 10 MB
Automatic colour detection · background removal · animated stitch preview · downloads as JEF for Janome & Elna machines
About BMP files
BMP is the uncompressed Windows bitmap format. BMP files are completely uncompressed, so there are zero compression artifacts — every pixel is exactly as authored. BMP has no transparency, so the automatic background removal detects and strips solid backgrounds instead.
Tip: Keep the background a single flat colour so the automatic background removal can strip it cleanly.
About the JEF format
JEF (Janome Embroidery Format) is read by Janome Memory Craft and Skyline series machines, plus Elna eXpressive models. The format stores thread colours as indices into the Janome thread palette. Copy the .jef file into the EMBF folder on a USB stick and open it from the machine's built-in file browser.
How to convert BMP to JEF
- 1
Upload your BMP image
Drag and drop or browse for a .bmp file up to 10 MB. SewFlow detects the colours, removes the background, and traces stitch regions automatically.
- 2
Fine-tune the design
Set the size for your hoop, override thread colours per layer, toggle layers on or off, and watch the animated stitch preview update.
- 3
Download the JEF file
JEF is preselected — click Download and transfer the file to your machine. Copy the .jef file into the EMBF folder on a USB stick and open it from the machine's built-in file browser.
Frequently asked questions
How do I convert a BMP to JEF?
Upload the BMP on this page — SewFlow digitizes it automatically (colour detection, background removal, stitch generation) and shows a free preview. Pick your size, then download the JEF file ready for Janome & Elna machines.
My BMP has a white background — will it be stitched?
No — SewFlow's background removal flood-fills from the image border and removes the solid background automatically before digitizing. You can also fine-tune the result with the eraser tool before downloading.
Which machines use JEF files?
JEF is read by Janome Memory Craft and Skyline series machines, plus Elna eXpressive models. Copy the .jef file into the EMBF folder on a USB stick and open it from the machine's built-in file browser.
Is the BMP to JEF converter free?
Converting and previewing is completely free. To download the finished embroidery file, create a free account — you get 1 free download every month, with affordable plans for more.