blender_export_images.py

import bpy

# Get the objects
objects = bpy.context.selected_objects

# Set the base path
base_path = "C:/exportpakkio"

# Iterate over objects
for obj in objects:
    # Check if object has an active material
    if obj.active_material:
        # Get the material
        mat = obj.active_material
        # Check if the material has a node tree
        if mat.node_tree:
            # Iterate over the nodes in the node tree
            for node in mat.node_tree.nodes:
                # Check if the node is a texture node and if its type is "TEX_IMAGE"
                if node.type == 'TEX_IMAGE':
                    # Get the image
                    img = node.image
                    # Check if the image is not None
                    if img:
                        # Set the new path
                        new_path = base_path + "/" + img.name
                        # Save the image
                        img.filepath_raw = new_path
                        img.file_format = 'PNG'
                        print("saving ",new_path)
                        img.save()