Adding image watermarks Leave feedback
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GroupDocs.Watermark supports adding the following image formats as watermarks:
- BMP
- PNG
- GIF
- JPEG
The following example shows how to add an ImageWatermark to a document. If the document consists of multiple parts (pages, worksheets, slides, frames, etc.), the watermark will be added to each of them.
import groupdocs.watermark as gw
import groupdocs.watermark.watermarks as gww
with gw.Watermarker("presentation.pptx") as watermarker:
with gww.ImageWatermark("watermark.jpg") as watermark:
watermarker.add(watermark)
watermarker.save("presentation.pptx")
You can also use a stream of the image to initialize an ImageWatermark instance.
import io
import groupdocs.watermark as gw
import groupdocs.watermark.watermarks as gww
with open("watermark.jpg", "rb") as f:
data = f.read()
with gw.Watermarker("image.png") as watermarker:
with gww.ImageWatermark(io.BytesIO(data)) as watermark:
watermarker.add(watermark)
watermarker.save("image.png")
For advanced usage of watermark properties (tiling, alignment, sizing, rotation, margins), see the text watermark article; the same techniques apply to image watermarks as well:
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