Matchwell™ Photo Deduplicator (Mac): the Lightroom Classic plug-in and the standalone app

The installer asks what to install: both (the default), only the Lightroom Classic plug-in, or only the
standalone app, which needs no Lightroom. One license covers both.

TO INSTALL

  1. If you are installing the Lightroom plug-in, quit Lightroom Classic.
  2. Double-click "Install Matchwell". macOS asks once whether to open an app downloaded from the
     Internet: click Open. (The installer is signed and checked by Apple.)
  3. Choose what to install and click Install. A message says when it is done.
  4. The app: open Applications > ThePictureOrg (or Launchpad) > Matchwell. It opens in your web browser and
     works only on this Mac.
     The plug-in: start Lightroom Classic. Then choose Library > Plug-in Extras > Find duplicate photos.

  The plug-in goes into Lightroom's own plug-in folder for your user:
     ~/Library/Application Support/Adobe/Lightroom/Modules/PictureOrgMatchwell.lrplugin
  The app goes into Applications > ThePictureOrg (or the same in the Applications folder in your home folder):
     Matchwell.app
  To update later, open the installer from the new download the same way; it replaces the old version.
  To remove them, open "Uninstall Matchwell".
  If anything goes wrong, the installer keeps a log for support:
     ~/Library/Logs/PictureOrg/Matchwell-install.log

  On a Mac with an Intel processor, Matchwell uses the Mac's own Python 3 with its picture packages. If they
  are missing, the installer says so: install Python 3 from python.org, then in Terminal run
     pip3 install numpy opencv-python-headless pillow rawpy

INSTALLING THE PLUG-IN BY HAND INSTEAD

  Right-click "Install Matchwell" > Show Package Contents > Contents > Resources, and copy
  PictureOrgMatchwell.lrplugin somewhere permanent (for example Documents/Lightroom Plug-ins). Then in
  Lightroom Classic choose File > Plug-in Manager > Add and pick it.

The full User Guide is inside the plug-in (right-click PictureOrgMatchwell.lrplugin > Show Package
Contents > docs > Matchwell-User-Guide.html).
