Clear watermarks Leave feedback
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You can search a document for existing watermarks and remove them. The example below finds a “CONFIDENTIAL” text watermark and removes it, producing a clean document.
Iterate the search results in reverse so removing an item does not shift the indexes still to visit, and call remove() for each match.
from groupdocs.watermark import Watermarker
from groupdocs.watermark.search.search_criteria import TextSearchCriteria
def clear_watermark():
with Watermarker("./watermarked-document.pdf") as watermarker:
possible = watermarker.search(TextSearchCriteria("CONFIDENTIAL"))
# Remove in reverse so indexes stay valid as items are deleted
for i in range(len(possible) - 1, -1, -1):
watermarker.remove(possible[i])
watermarker.save("./output.pdf")
if __name__ == "__main__":
clear_watermark()
watermarked-document.pdf is the sample file used in this example. Click here to download it.
Binary file (PDF, 394 KB)
Use case: Remove outdated labels such as “Draft” or “Internal Use Only” before sharing a document externally.
Image watermarks can be found with perceptual hashing and removed the same way:
from groupdocs.watermark import Watermarker
from groupdocs.watermark.search.search_criteria import ImageDctHashSearchCriteria
def clear_image_watermark():
with Watermarker("./watermarked-document.docx") as watermarker:
criteria = ImageDctHashSearchCriteria("./logo.png")
criteria.max_difference = 0.9
possible = watermarker.search(criteria)
# Remove in reverse so indexes stay valid as items are deleted
for i in range(len(possible) - 1, -1, -1):
watermarker.remove(possible[i])
watermarker.save("./output.docx")
if __name__ == "__main__":
clear_image_watermark()
watermarked-document.docx and logo.png are the sample files used in this example. Download watermarked-document.docx and logo.png.
Binary file (DOCX, 12 KB)
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