I’m assuming the build step doesn’t resize images that have already been processed. Other than that this approach seems to handle plenty of images per album. Albums are a UX principle, so they shouldn’t be very big anyway.
Correct - if the resized image is already there it is skippped (this can be overwritten with -force flag).
Correct - if the resized image is already there it is skippped (this can be overwritten with -force flag).