Since TrueSizer is free and reliable, here is the exact workflow.
Since EMB is an editable source format, you need embroidery digitizing software that can . emb to dst file converter
(Free) is a popular choice for simply opening an EMB and saving it as a DST without needing the full paid suite. MaggieFrameStore Step-by-Step Conversion (Wilcom/Hatch) How to Convert Any File to DST Embroidery Format Since TrueSizer is free and reliable, here is