When not to use it 1 of 2
Limitations
Ordinary JPEG does not provide a standard alpha channel, live vector paths, editable layers, embroidery stitches, cutting paths, toolpaths, or 3D geometry. Repeated lossy re-exports can compound artifacts, especially around text and hard edges.
The important limitation is not that JPEG is universally low quality. A well-prepared source can look excellent. The limitation is that ordinary JPEG is a flattened, fixed-resolution image commonly compressed with loss, so it cannot recover detail, transparency, or editable geometry after export.
| Need | Why ordinary JPEG falls short | Usually better direction |
|---|---|---|
| Transparent logo | White or colored background remains opaque | PNG or another accepted alpha-capable format |
| Scalable line art | Edges are pixels and may show compression halos | Editable vector source and accepted vector export |
| Embroidery | No stitches, sequence, density, or underlay | Digitized embroidery file |
| Cut vinyl / laser cutting | No dependable vector contour | Approved vector cutting path |
| 3D print | No mesh, volume, or slicing instructions | Approved 3D geometry and process files |
| Repeated editing | Each lossy save can degrade the image | Keep and revise an editable master |