Update watermarks Leave feedback
On this page
Search for existing watermarks and update them.
Easily find and modify existing text watermarks in documents. With Python, you can search for a watermark by its text content and update it with a new value.
import groupdocs.watermark as gw
import groupdocs.watermark.search.searchcriteria as gws_sc
with gw.Watermarker("C:\\Docs\\watermarked-sample.docx") as watermarker:
criteria = gws_sc.TextSearchCriteria("Contract Draft", False)
possible = watermarker.search(criteria)
print("Found", possible.count, "possible watermark(s).")
for wm in possible:
try:
wm.text = "Contract is no longer valid"
except Exception:
pass
watermarker.save("C:\\Docs\\updated-sample.docx")
Quickly replace old or incorrect image watermarks with new ones. Python developers can search for an image watermark using perceptual hashing and swap it with an updated logo or graphic.
import groupdocs.watermark as gw
import groupdocs.watermark.search.searchcriteria as gws_sc
with gw.Watermarker("C:\\Docs\\watermarked-sample.docx") as watermarker:
image_criteria = gws_sc.ImageDctHashSearchCriteria("C:\\Docs\\logo.png")
image_criteria.max_difference = 0.9
possible = watermarker.search(image_criteria)
print("Found", possible.count, "possible watermark(s).")
with open("C:\\Docs\\new-logo.png", "rb") as f:
image_data = f.read()
for wm in possible:
try:
wm.image_data = image_data
except Exception:
pass
watermarker.save("C:\\Docs\\updated-sample.docx")
Was this page helpful?
Any additional feedback you'd like to share with us?
Please tell us how we can improve this page.
Thank you for your feedback!
We value your opinion. Your feedback will help us improve our documentation.
