Why an SVG does not become a JEF just by changing the extension
SVG is a vector format: it stores shapes and curves instead of pixels, so it scales without losing sharpness. It is the best starting point for embroidery because the outlines are already clean, but a vector stroke is not a stitch: we still have to decide stitch type, angle, density, underlay and stitching order.
A JEF file, on the other hand, is a list of instructions for the machine: move the needle, stitch, jump, trim and change thread. Going from one to the other is digitizing: redrawing the design as stitch objects and deciding the type, direction and order for each area.
How we turn the SVG to JEF, step by step
An image is a drawing; an embroidery file is a recipe for the machine. Getting from one to the other takes interpretation, which we do in five steps.
1. Clean up and simplify the image
We start from the SVG and remove noise, blurry edges and gradients. A thread is a single color, so the design is reduced to the shades that will actually be stitched (in a logo, usually between 1 and 8). Lines thinner than 1 or 1.5 mm are redrawn thicker, because thread cannot be thinner than that.
2. Decide final size, garment and fabric
A stitch has a fixed size; it does not scale like an image. That is why we ask how big the embroidery will be and what fabric it goes on: a stretch polo, a cap or a towel need different densities and underlays. With that information we digitize the design for that specific use.
3. Choose the stitch type for each area
We redraw the design as objects and assign each one a stitch, with its direction and density (the spacing between stitches is usually around 0.4 mm).
| Stitch | Used for | How it works |
|---|---|---|
| Running | Outlines, thin lines and small details | A simple, continuous stitch. It is the only one that can draw lines thinner than 1 mm. |
| Satin | Lettering and narrow shapes, 1 to 7 mm wide | Parallel stitches laid very close together for a smooth, glossy finish. If the area is wider, the thread snags and it switches to fill. |
| Fill (tatami) | Large areas of color | Rows of short, staggered stitches that cover wide surfaces with an even texture and no long loose threads. |
4. Technical adjustments that prevent puckering
- Underlay: base stitches underneath that hold the fabric and lift the satin so it does not sink in.
- Pull compensation: thread tightens the fabric as it is stitched, so we widen the shapes slightly to make the final result match the size of the original.
- Order and path: we stitch from background to detail and link nearby areas to reduce thread jumps and color changes.
- Tie-ins and trims: every section starts and ends secured, and trims are marked wherever there are long jumps.
5. Simulate, export and check
Before delivering we run the design through the stitch simulator: we look at the sequence, the stitch count and the thread changes, and fix whatever does not fit. Then we export it to JEF, check that it opens and that the simulation matches what we agreed, and send it to you with the color sheet.
The JEF format
JEF is the Janome (and Elna) format. It stores the stitches, the thread colors and also the hoop the design was prepared for.
JEF carrying the hoop has a practical consequence: we have to digitize with the hoop you will use in mind. Tell us your Janome model and the hoop and we keep the design centered and within its limits.
| Brand | Use |
|---|---|
| Janome | Memory Craft and the rest of the embroidery models |
| Elna | embroidery models that share a platform with Janome |
| Janome software | Artistic Digitizer and Customizer open and edit JEF |
If the design is larger than the stated hoop, the machine warns you and will not let you embroider. Large designs can be split into two pieces with alignment marks.
How to prepare the SVG before sending it
- Convert text to outlines (curves) before exporting, or send the typeface as well.
- Check that there are no images embedded in the SVG; if there are, send the original instead.
- Remove hidden layers, guides and duplicate paths so they do not end up as stitches.
- Very thin lines (under 1 mm at final size) cannot be stitched in satin: they are switched to running stitch or thickened.
In this case: Starting from an SVG we reuse its curves as an exact guide, so the JEF respects the proportions of the logo to the millimeter. We still adjust the pull compensation: without it, satin columns come out narrower than in the vector.
How we convert it
- We review your fileWe check the SVG, clean up the edges and reduce the colors to real threads.
- We set size and fabricStitch density depends on the final size and the garment, so it is decided before digitizing and never rescaled afterwards.
- We digitize by handWe trace every area and choose the stitch type (running, satin or fill), direction, density, underlay and pull compensation.
- We simulate the embroideryWe check the sequence in the stitch simulator to remove unnecessary jumps and trims.
- We send it to youYou get the .JEF file with a preview and a sheet with colors, stitch count and dimensions.
What you receive
A .JEF file prepared for your hoop, a preview and a sheet with colors, stitch count and dimensions.
If you also need the design in another format (for example for a workshop with an industrial machine), ask for it in the notes.
Frequently asked questions
Can an SVG be converted to JEF for free and automatically?
There are automatic converters, but an SVG contains no stitches: the software guesses direction, density and order, and the result tends to pucker the fabric, break thread or leave letters unreadable. They work as a draft for very simple designs. To embroider a real garment, the JEF must be digitized or reviewed by hand.
Which machines read the JEF format?
Janome: Memory Craft and the rest of the embroidery models. Elna: embroidery models that share a platform with Janome. Janome software: Artistic Digitizer and Customizer open and edit JEF. If you are not sure, put your machine model in the notes.
If I already have the SVG, can’t I just load it into the machine?
No. No embroidery machine reads SVG: it needs a stitch file. Programs such as Ink/Stitch start from an SVG, but someone has to assign each shape its stitch type, direction, compensation and order. The vector saves tracing work and usually makes the result cheaper.
Which hoop do I set in the JEF?
The one you will use on your Janome. If you do not know, tell us the model and the size you want to embroider and we pick the smallest hoop it fits in, which is the one that holds the fabric best.
How much does it cost to convert an SVG to JEF?
€5 (about $6) per design, and we send it to you in under 24 hours. If your design needed anything out of the ordinary, we will let you know before starting.