JPG to JEF

What to know about starting from JPG

JPEG throws away detail to save space, and it does it worst exactly where embroidery cares most: hard edges. Zoom into a JPEG logo and the boundary between two flat colours is a fringe of in-between pixels.

JPG to JEF specifically

JPEG fringing plus Janome's fixed thread chart means two roundings between your artwork and the sewn design. The fringe invents colours, then each one is matched to the nearest Janome thread. Worth knowing: if two of your colours round to the same chart entry, one gets pushed to its next-nearest thread so the two stay visually distinct — so closely-related shades can shift further than you expected.

How to convert JPG to JEF

1. Upload your JPG. Those fringe pixels read as extra colours, so cut the colour count down hard — a two-colour logo should convert as two colours, not eleven. If you can get the original PNG, SVG or PDF from whoever made the logo, use that instead; it is the single biggest quality difference available to you.
2. Set the finished size. Work in millimetres and set it before you judge anything else — every decision about detail depends on how big the design will be. Detail that survives at 150mm disappears at 60mm.
3. Reduce the colours. Each colour is a thread change on the machine. Pick the fewest that still read as your artwork.
4. Check the preview, then export as JEF. The stitch preview plays the design in the order the machine will sew it, so you can catch problems before there is thread in the hoop.

About the JEF format

JEF is the native format for Janome and Elna. JEF stores thread colours and also records which hoop the design is meant for, so it is worth picking the right hoop size at export rather than letting the machine complain about it later.

What makes the difference to the result

Digitizing is not tracing. The converter decides how each region gets filled, which direction the stitches run, where the underlay goes and how much to compensate for the fabric pulling the design in as it sews. Those decisions are what separate a design that stitches cleanly from one that puckers, gaps at the edges or takes twice as long as it should.

• Size before everything. A shape narrower than about 1.2mm cannot be stitched as its own satin column; it has to be widened or dropped.
• Fewer colours, better result. Every extra colour is a thread change, a trim and a chance for registration to drift.
• Flat beats subtle. Gradients, glows and soft shadows have no equivalent in thread and become banding.
• Check the stitch order. The simulator plays it back so you can see the sequence before you sew it.

Already have the vector?

If whoever designed the artwork can send you the SVG, AI, EPS or PDF, use that instead. Converting from vector skips the whole business of inferring edges from pixels, and the difference is visible in the finished stitch-out. See SVG to embroidery.

Common questions

Related converters

Already have an embroidery file in the wrong format? That is a different job — no digitizing needed, just a re-encode. Use the embroidery file converter. Working with text rather than artwork? Browse the embroidery fonts.