09-17-2020, 10:31 AM
(This post was last modified: 09-17-2020, 10:31 AM by rich2005.
Edit Reason: typo
)
Thanks for the example.
I can see the problem, the BIMP png's have an alpha channel which adds to the size. I tried all ways but I can not see any way to get BIMP not to add an alpha channel. It must be a bug, even goes back to older (1.18) versions. I will post a bug report but not much activity on the BIMP front these days.
Two options:
Use BIMP to batch produce the pngs. A second operation using the attached plugin advanced_batch_remove_alpha.py to remove the alpha channel from those files. From a test that gives the same size as exporting one-by-one.
or
Not Gimp, use ImageMagic https://imagemagick.org and a command line in the file folder
Not quite as small as Gimp but close.
I can see the problem, the BIMP png's have an alpha channel which adds to the size. I tried all ways but I can not see any way to get BIMP not to add an alpha channel. It must be a bug, even goes back to older (1.18) versions. I will post a bug report but not much activity on the BIMP front these days.
Two options:
Use BIMP to batch produce the pngs. A second operation using the attached plugin advanced_batch_remove_alpha.py to remove the alpha channel from those files. From a test that gives the same size as exporting one-by-one.
or
Not Gimp, use ImageMagic https://imagemagick.org and a command line in the file folder
Code:
magick mogrify -flatten -quality 100 -format png *.jpg