Pdf Remove Watermark Github 💯
No single tool works universally. The deep approach: 3. Deep Dive: PyMuPDF Script (Most Effective) import fitz # PyMuPDF def remove_watermark_by_rect(input_pdf, output_pdf, rect_tolerance=0.1): """ Remove all vector/text elements inside specified rectangular regions. rect_tolerance: match watermark position across pages (fraction of page) """ doc = fitz.open(input_pdf)
And never remove watermarks to misrepresent ownership—that’s where engineering becomes forgery. This piece was assembled from real GitHub source analysis and PDF internals documentation. The code examples run on Python 3.8+ with PyMuPDF installed ( pip install PyMuPDF ). pdf remove watermark github
# Detect watermark region (first page, look for repeated gray text) first_page = doc[0] watermarks = [] for block in first_page.get_text("dict")["blocks"]: for line in block.get("lines", []): for span in line.get("spans", []): if span["color"] < 0.5: # dark gray/black threshold bbox = fitz.Rect(span["bbox"]) watermarks.append(bbox) No single tool works universally
This physically removes the text—even from copied text layer. Image watermarks (scan of a stamp, logo) require a different approach: # Detect watermark region (first page, look for
# Most watermarks are at same coordinates across pages common_rect = fitz.Rect() if watermarks: common_rect = watermarks[0] # simplify: take first