Remove watermark text from PDF: implementation method and source code

When processing PDF documents, sometimes we encounter watermark text, which may affect the readability and aesthetics of the document. This article will introduce how to use programming methods to remove watermark text from PDF documents and provide the corresponding source code.

1. Preparation

Before we begin, we need to make sure that the following two commonly used Python libraries are installed:

• PyPDF2: A library for processing PDF documents.
• ReportLab: A library for generating PDF documents.

These two libraries can be installed using the pip command:

pip install PyPDF2
pip install reportlab

2. Implementation of removing watermark text

Here is a simple Python function for removing watermark text from PDF documents:

import PyPDF2
from reportlab.pdfgen import canvas

def remove_watermark(input_pdf_path, output_pdf_path)