Add watermarks to PowerPoint presentations Leave feedback
GroupDocs.Watermark allows you to add watermarks to slides, master slides, layout slides, notes, and background images in PowerPoint presentations.
Apply text or image watermarks to specific slides by targeting them with PresentationWatermarkSlideOptions.
import groupdocs.watermark as gw
import groupdocs.watermark.watermarks as gww
import groupdocs.watermark.options.presentation as gwo_ppt
load_options = gw.PresentationLoadOptions()
with gw.Watermarker("presentation.pptx", load_options) as watermarker:
text_wm = gww.TextWatermark("Test watermark", gww.Font("Arial", 8.0))
text_opts = gwo_ppt.PresentationWatermarkSlideOptions()
text_opts.slide_index = 0
watermarker.add(text_wm, text_opts)
with gww.ImageWatermark("logo.jpg") as img_wm:
img_opts = gwo_ppt.PresentationWatermarkSlideOptions()
img_opts.slide_index = 1
watermarker.add(img_wm, img_opts)
watermarker.save("presentation.pptx")
🔹 Use case: Place a disclaimer on the title slide and a logo on the second slide.
You can lock watermarks so that users cannot edit or remove them easily.
import groupdocs.watermark as gw
import groupdocs.watermark.watermarks as gww
import groupdocs.watermark.options.presentation as gwo_ppt
load_options = gw.PresentationLoadOptions()
with gw.Watermarker("presentation.pptx", load_options) as watermarker:
watermark = gww.TextWatermark("Watermark text", gww.Font("Arial", 19.0))
options = gwo_ppt.PresentationWatermarkSlideOptions()
options.is_locked = True
options.protect_with_unreadable_characters = True
watermarker.add(watermark, options)
watermarker.save("presentation.pptx")
🔹 Use case: Protect sensitive slides by embedding non-removable watermarks.
Retrieve slide width and height programmatically.
import groupdocs.watermark as gw
import groupdocs.watermark.contents.presentation as gwc_ppt
load_options = gw.PresentationLoadOptions()
with gw.Watermarker("presentation.pptx", load_options) as watermarker:
content = watermarker.get_content(gwc_ppt.PresentationContent)
print(content.slide_width)
print(content.slide_height)
🔹 Use case: Dynamically size watermarks to match slide proportions.
You can add watermarks to master slides, layout slides, notes, and handouts.
import groupdocs.watermark as gw
import groupdocs.watermark.watermarks as gww
import groupdocs.watermark.options.presentation as gwo_ppt
import groupdocs.watermark.contents.presentation as gwc_ppt
load_options = gw.PresentationLoadOptions()
with gw.Watermarker("presentation.pptx", load_options) as watermarker:
watermark = gww.TextWatermark("Test watermark", gww.Font("Arial", 8.0))
content = watermarker.get_content(gwc_ppt.PresentationContent)
master_opts = gwo_ppt.PresentationWatermarkMasterSlideOptions()
master_opts.master_slide_index = -1
watermarker.add(watermark, master_opts)
if content.layout_slides is not None:
layout_opts = gwo_ppt.PresentationWatermarkLayoutSlideOptions()
layout_opts.layout_slide_index = -1
watermarker.add(watermark, layout_opts)
for i in range(content.slides.count):
if content.slides[i].notes_slide is not None:
note_opts = gwo_ppt.PresentationWatermarkNoteSlideOptions()
note_opts.slide_index = i
watermarker.add(watermark, note_opts)
if content.master_handout_slide is not None:
handout_opts = gwo_ppt.PresentationWatermarkMasterHandoutSlideOptions()
watermarker.add(watermark, handout_opts)
if content.master_notes_slide is not None:
notes_opts = gwo_ppt.PresentationWatermarkMasterNotesSlideOptions()
watermarker.add(watermark, notes_opts)
watermarker.save("presentation.pptx")
🔹 Use case: Apply a company logo watermark across all slides, notes, and handouts to enforce consistent branding.
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