How to Convert Illustrator to the PES Format. The PES format is the native embroidery file format for both the small home-oriented Brother PE series of embroidery machines and the larger semi ...

A file with .pes extension is an embroidery file that stores stitching instructions for sewing machines. Use these free tools to open them.

You can convert those types of formats into other embroidery formats, but you'll need a program such as the company's Buzz-2-Stitches program to convert a JPEG image into a PES.

When it comes to converting file extensions on your iPhone, don't worry about downloading a third-party app when you can make the changes yourself.