pxdlib (Alpha 0.0.4)

pxdlib is a library intended for deciphering and manipulating .pxd files, used by the image editor Pixelmator Pro. Grab Python 3.6 or above and pip install pxdlib!

Documentation exists for the API, and a much longer set of documentation exists for the reverse-engineering of the .pxd format.

pxdlib can be used for a variety of purposes. For example, if you have designed a graph, you may automagically manipulate coordinates as:

from pxdlib import PXDFile

P0, T0 = 50, 100

COORDS = dict()
with open('data.csv') as f:
    for line in f.readlines():
        name, P, T = line.strip().split(',')
        COORDS[name] = P0 + float(P), T0 + float(T)

with PXDFile('graph.pxd') as pxd:
    for l in pxd.all_layers():
        if l.name in COORDS:
            l.position = COORDS[l.name]

Development

As pxdlib is available on PyPI, it will be updated in production only when a new version is available. The reverse-engineering document, however, will be kept up-to-date in production as behaviour is confirmed.

Until the library is considered "done", it will not be confirmed to work on any specific Pixelmator version other than "the latest". I will consider pxdlib "done" when:

• raster layers are accessible in a format which is compatible with a good raster-manipulating API;
• vector layers are fully modifiable;
• text layers can be modified, at least with the common formatting capabilities;
• all effects and filters are documented and available;
• layers can be created and destroyed;

and all of the above is formally tested with a specially-created document.

A changelog is available here.