CMX is legacy and read-only here
CMX is an older vector format. It can usually be opened and converted from, but it's long obsolete, so there's no modern encoder to create new CMX files.
Looking to convert PSD to CMX? Here's the honest answer — and what works instead.
Turn your file into a share-worthy AI Effect — one tap, no prompts.
PSD is Photoshop’s native format, preserving layers, masks and effects for non-destructive editing.
PSD opens in Photoshop, Affinity Photo, GIMP and Photopea.
Not here — CMX is a legacy format with no modern encoder. We can often read CMX as a source, but for output use a current format like PNG, JPG or TIFF.
PSD converts to PNG, JPG or TIFF — free, no sign-up, no watermark.