EMB

Status

What it is

EMB is Wilcom’s native working format. It can preserve editable outlines, stitch settings, lettering, colors, icons, generated stitches, and software-specific properties.

Satin Studio behavior

Satin Studio documents this format for identification and inspection. It does not open or export the file.

Versions and variants

EMB is a native working format versioned by software generation. Its objects cannot be interpreted as a versionless stream of stitches.

File identification notes

Reported EMB-family files contain vectors, icon data, color data, and stitch data. Some internal data is compressed and may use additional byte transformation before or around compressed streams.

Observed structure notes

• EMB-family files are native working documents. They may contain object vectors, icons/previews, colors, generated stitches, settings, and compressed internal streams.
• Any useful parser needs a version marker and an object stream map before stitch data can be interpreted safely.

Structure sketch

EMB is a native working file. A parser must find objects and metadata before extracting stitches.

struct EmbContainer<'a> {
    version_or_header: &'a [u8],        // version-specific
    object_streams: &'a [EmbStream<'a>],
    compressed_streams: &'a [EmbStream<'a>],
}

struct EmbStream<'a> {
    kind: &'a str,                      // vectors, icons, colors, stitches, settings, unknown
    payload: &'a [u8],
}

Compatibility evidence

The notes above help identify and inspect the format; they do not imply import or export support. Keep the original file and record the machine and software that produced it.