OFM

Status

Field	Value
Extension(s)	.ofm
Common ecosystem	Melco DesignShop
Format family	Native working file
Satin Studio status	Researching
Open / import	No
Export	No
Confidence	Medium.

What it is

OFM is a Melco DesignShop working file for editable embroidery designs.

Satin Studio direction

Import-only research, not a near-term exporter.

Versions and variants

OFM is a native working format. It should not be treated as a simple expanded stitch stream without version-specific evidence.

File identification notes

Reported OFM-family files are compound binary documents and may include stitch data among richer design/application data.

Observed structure notes

• OFM is a native Melco working-file lead. Treat it as a compound/application document until version and stream maps are verified.
• Expect richer design objects, settings, and generated stitch data rather than a single expanded stream.

Structure sketch

OFM is a Melco working-file lead. Treat it as a compound native document rather than an expanded stream.

struct OfmContainer<'a> {
    container_header: &'a [u8],
    streams: &'a [OfmStream<'a>],       // object data, settings, stitch data, previews, unknown
}

struct OfmStream<'a> {
    name_or_kind: Option<&'a str>,
    payload: &'a [u8],
}

What we still need

Known-version files, container maps, object semantics, and stitch-data extraction rules.