Working with slide backgrounds Leave feedback
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Watermarker.get_content() returns a PresentationContent whose slides each expose an image_fill_format with a background_image, tile_as_texture, and transparency. The background image is None when the slide has no image fill.
from groupdocs.watermark import Watermarker
from groupdocs.watermark.options.presentation import PresentationLoadOptions
def extract_slide_backgrounds():
with Watermarker("./presentation.pptx", PresentationLoadOptions()) as watermarker:
content = watermarker.get_content()
for i, slide in enumerate(content.slides):
background = slide.image_fill_format.background_image
if background is not None:
print(f"Slide {i}: background {background.width}x{background.height}")
else:
print(f"Slide {i}: no background image")
if __name__ == "__main__":
extract_slide_backgrounds()
presentation.pptx is the sample file used in this example. Click here to download it.
Slide 0: no background image
Slide 1: no background image
Slide 2: no background image
Slide 3: no background image
Set the background_image to None:
from groupdocs.watermark import Watermarker
from groupdocs.watermark.options.presentation import PresentationLoadOptions
def remove_slide_background():
with Watermarker("./presentation.pptx", PresentationLoadOptions()) as watermarker:
content = watermarker.get_content()
content.slides[0].image_fill_format.background_image = None
watermarker.save("./output.pptx")
if __name__ == "__main__":
remove_slide_background()
presentation.pptx is the sample file used in this example. Click here to download it.
Binary file (PPTX, 196 KB)
from groupdocs.watermark import Watermarker
from groupdocs.watermark.watermarks import TextWatermark, Font, Color
from groupdocs.watermark.options.presentation import PresentationLoadOptions
def watermark_slide_backgrounds():
with Watermarker("./presentation.pptx", PresentationLoadOptions()) as watermarker:
watermark = TextWatermark("CONFIDENTIAL", Font("Arial", 19.0))
watermark.foreground_color = Color.red
content = watermarker.get_content()
for slide in content.slides:
if slide.image_fill_format.background_image is not None:
slide.image_fill_format.background_image.add(watermark)
watermarker.save("./output.pptx")
if __name__ == "__main__":
watermark_slide_backgrounds()
presentation.pptx is the sample file used in this example. Click here to download it.
Binary file (PPTX, 196 KB)
You can also tune image_fill_format.transparency (0.0–1.0) and image_fill_format.tile_as_texture when setting a background image. The same image_fill_format is available on chart objects.
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