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Now, every time you push a PDF to GitHub, the action automatically strips the watermarks. This is perfect for CI/CD pipelines.
Disclaimer: The author of this article does not condone copyright infringement. Use GitHub tools ethically.
The script converts every page of the PDF into a high-resolution image. It then uses computer vision techniques to detect and remove the watermark. pdf remove watermark github
One of the most precise ways to remove watermarks found on GitHub involves converting PDF pages into images and targeting the specific RGB values of the watermark. :
import fitz
: Side-by-side views of the watermarked vs. cleaned output.
From a technical perspective, a watermark is just another layer of PDF content—text, vector art, or image—drawn over or under the main content. PDF’s stacking model makes removal possible via content filtering. Now, every time you push a PDF to
convert the PDF file into images using pdf2image. change them into (255,255,255) * save the modified images.
name: PDF Watermark Remover on: [push] jobs: clean-pdf: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Install PyMuPDF run: pip install pymupdf - name: Run removal script run: python scripts/nuke_watermark.py --input docs/*.pdf - name: Upload cleaned artifacts uses: actions/upload-artifact@v4 with: name: clean-pdfs path: docs/*_clean.pdf Use GitHub tools ethically
GitHub is the world’s largest repository of open-source code, and it houses some of the most powerful, tools for removing watermarks from PDFs.