Export a PNG of the cropped content of the view/selection

README.md

Put the python script in the GIMP plug-ins folder and restart GIMP

Find which folder that is in Edit / Preferences / Folders / Plug-ins

extract_as_png.py

#!/usr/bin/env python

from gimpfu import *
from time import time
import gtk
import collections
import os

def do_stuff(img, layer, folder, prefix) :
    filename = "{}/{}-{:.0f}.png".format(folder, prefix, time() * 1000)
    gimp.progress_init("Exporting to " + filename)

    new_image = pdb.gimp_image_duplicate(img)
    layer = pdb.gimp_image_merge_visible_layers(new_image, CLIP_TO_IMAGE)
    non_empty, x1, y1, x2, y2 = pdb.gimp_selection_bounds(img)

    pdb.gimp_image_crop(new_image, x2-x1, y2-y1,x1, y1)
    gimp.progress_update(25)

    pdb.plug_in_autocrop(new_image, layer)
    gimp.progress_update(50)

    pdb.file_png_save_defaults(new_image, layer, filename, filename)
    gimp.progress_update(75)
    
    pdb.gimp_image_delete(new_image)
    gimp.progress_update(100)

register(
    "extract_content_as_pngfu",
    "Extract content as PNG...",
    "Export a PNG of the cropped content of the view/selection",
    "pho",
    "pho",
    "2020",
    "Extract content as PNG...",
    "*",
    [
        (PF_IMAGE, "image", "Input image", None),
        (PF_DRAWABLE, "drawable", "Input layer", None),
        (PF_DIRNAME, "folder", "Folder to save", ""),
        (PF_STRING, "prefix", "File prefix", "file")
    ],
    [],
    do_stuff, menu="<Image>/Filters/Render")

main()