Re: [Gimp-user] Script-Fu: remove Exif, thumbnail, color profile when saving PNG

[Ofnuts <ofnuts gmx com>]

Why do you use Gimp for this... You script would run faster using
ImageMagick (for the conversion) and ExifTool (to remove the Exif data):

convert in.png PNG8:out.png
exiftool all= out.png



On 24/08/2022 15:52, Sam Lee via gimp-user-list wrote:
> Hello, I have written a Script-Fu batch program that is intended to
> reduce the file size of a PNG image ("in.png") by converting it into
> "indexed" mode with a color palette of 16 colors, and saving the output
> ("out.png"):
>
>
> #!/bin/sh
> gimp-console --batch '
> (let* ((image (car (gimp-file-load RUN-NONINTERACTIVE "in.png" "in.png")))
>         (drawable (car (gimp-image-flatten image)))
>         (outfile "out.png"))
>    (gimp-image-convert-indexed image
>                                CONVERT-DITHER-NONE
>                                CONVERT-PALETTE-GENERATE
>                                16 FALSE FALSE "")
>    (file-png-save2 RUN-NONINTERACTIVE image drawable outfile outfile FALSE 9
>                    FALSE FALSE FALSE FALSE FALSE FALSE FALSE))
> (gimp-quit 0)'
>
>
> This script works. However, it always includes Exif data, thumbnail, and
> the color profile when I save the PNG, which I do not want because they
> make the saved image larger. I know that if I change `(file-png-save2
> RUN-NONINTERACTIVE ...)` to `(file-png-save2 RUN-INTERACTIVE ...)`, a
> dialog will pop up where I can uncheck the "Save Exif data", "Save
> thumbnail", and "Save color profile" checkboxes. I want to disable the
> "Save Exif data", "Save thumbnail", and "Save color profile" in a
> non-interactive way (i.e. without requiring the interactive dialog box)
> when saving a PNG. How can I do that?
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