Check your machine's manual
The single fastest way to choose: open your machine's manual and look for "supported file formats". Most machines accept one or two formats natively; everything else needs conversion.
StitchPilot.aiFormat comparison
PES vs JEF: Which Embroidery File Format Should You Use?
PES is the native format for Brother embroidery machines (Innov-ìs, SE700, PE800, SE1900). JEF is the native format for Janome embroidery machines (Memory Craft, MB-4, Skyline). They overlap in capability but target different machine ecosystems. This guide compares them side-by-side and explains how to convert between them when you need to.
How to choose
Identify the target ecosystem
PES is the right call when you are working in the Brother ecosystem. JEF is the right call for the Janome ecosystem.
When in doubt, choose universal
If you are sending designs to multiple machines or production partners, DST (Tajima) is the most universally accepted commercial format. Otherwise pick the native format for your primary machine.
Convert as needed
StitchPilot.ai converts between PES and JEF in the browser. Open the file, choose the target format, export. No need to keep multiple desktop tools installed.
When to choose PES
PES fits best when…
PES is the natural choice in these contexts:
- You produce on Brother machines (Innov-ìs, SE700, PE800).
- Your design library is mostly Brother-compatible already.
- You sell on Etsy and most buyers have Brother machines.
- You already have a Brother-compatible machine in front of you.
When to choose JEF
JEF fits best when…
JEF is the natural choice in these contexts:
- You produce on Janome machines (Memory Craft, MB-4, Skyline).
- Your dealer or repair partner is Janome-focused.
- You need JEF+ support for larger hoop sizes on newer Janome models.
- Your production partner is in the Janome ecosystem.
PES vs JEF — common questions
Is PES or JEF better?
Neither is "better" — they target different machine ecosystems. PES is the native format for Brother; JEF for Janome. Pick the one your machine reads natively.
Can I convert PES to JEF?
Yes. StitchPilot.ai converts between PES and JEF in the browser. The same source design can be exported to either format without re-digitizing.
Does conversion lose quality?
Modern conversion between PES and JEF preserves the stitch sequence and color order. Some format-specific metadata (such as thread brand codes) may be lost; the stitches themselves are preserved.
What file extension does PES use?
PES files use the .pes extension. JEF files use the .jef extension.
Do I need both formats?
Only if you produce on both ecosystems. If your work targets only one machine family, stick to its native format and convert only when sending out for production elsewhere.
Skip the format decision
Export the same design to PES or JEF in StitchPilot.ai
Upload once, export to PES, JEF, or any other major embroidery format from the same workspace.
Convert to either format →