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  In daily office and data-processing work, PDF files are widely used because they are cross-platform and have stable formatting. However, extracting text from PDFs can be troublesome. Whether you're organizing materials, analyzing data, or building a text-retrieval system, efficient and accurate PDF text extraction is a fundamental need. This article shows how to use the powerful   Spire.PDF for .NET   component to easily extract PDF text using C# code. Introduction to Spire.PDF for .NET Spire.PDF for .NET is a professional PDF component that lets developers create, read, edit, and convert PDF files on the .NET platform—without installing Adobe Acrobat or other external dependencies. Key features include: Rich API for comprehensive PDF manipulation Practical text-extraction capabilities Support for extracting entire pages or text from specified regions Install via NuGet: Install - Package Spire . PDF Extract All Text from a Specified Page A common requirement is to ext...

  Adding watermarks to Word documents is a common requirement in everyday office work. Whether you need to mark a document as “Internal Use,” “Confidential,” etc., to indicate its status, or add a company logo as a picture watermark to protect copyright, watermarks can effectively improve a document’s professionalism and security. This article shows how to use a free Word library to add text and image watermarks to Word documents with concise Python code. Preparation In this scenario, we'll use Free Spire.Doc for Python package. You can install it with pip: pip install spire.doc.free After installation you can start writing code. Add a Text Watermark to Word Text watermarks are the most common type and are typically used to indicate document status. The code below shows how to add a text watermark to a Word document: from spire.doc import * from spire.doc.common import * # Create a Document object document = Document() # Load the Word document document.LoadFromFile( "I...

  Adding a background color or image to PDF files is a common task in office work and document processing, whether to enhance visual appearance or highlight important content. This article demonstrates how to use a free PDF library to add both background colors and background images to PDFs with just a few lines of code. Preparation First, install the Free Spire.PDF for Python library. Open a command-line terminal and run: pip install spire.pdf.free After installation, you can start writing code. Note that Free Spire.PDF is the free version and has a page limit (up to 10 pages per document). This is usually sufficient for everyday small-scale document processing. Add a Background Color to a PDF Adding a background color to a PDF is very simple. Iterate through each page of the PDF and set its  BackgroundColor  property. Here is a complete example: from spire.pdf.common import * from spire.pdf import * # Create a PdfDocument object doc = PdfDocument() # Load the PDF...

  When handling contracts, legal files, or technical documentation, multiple versions of the same PDF are often involved. Identifying what has changed between versions manually can be tedious and prone to mistakes. Fortunately,  Spire.PDF for Python  makes it easy to  detect and highlight differences between two PDF files automatically  , using only a small amount of code. This tutorial shows you how to compare PDFs step by step, including setup and optional configuration. Install the Library To begin, install the required package from PyPI: pip install spire.pdf After installation, you can start comparing PDF documents right away. Basic Example: Detect Differences Between Two PDFs The example below compares an original document with an updated version and outputs a comparison file that visually marks the changes: from spire.pdf.common import * from spire.pdf import * # Load the original PDF original = PdfDocument( "C:\\Users\\Administrator\\Desktop\\origi...

  Transforming PDF documents into Excel spreadsheets is a critical process for tasks like data analysis, reporting, and automating workflows. This guide presents two effective methods for harnessing free Python libraries to accomplish this task: Converting complete PDF pages or entire documents to Excel format Extracting tables from PDF files and exporting them into Excel By comparing these methods, you’ll gain insights to select the best approach tailored to your requirements. Necessary Libraries to Install To get started, you need to install the following Python libraries: [  Free Spire.PDF for Python  ]: This powerful library provides tools for handling PDF files, including the ability to convert PDF content to Excel and extract tabular data. [  openpyxl  ]: A well-known open-source library that facilitates reading, writing, and modifying Excel files. You can install both libraries using pip: pip install spire.pdf.free openpyxl After installing the libraries,...

  In the digital age, the conversion and management of images and documents have become increasingly important. Especially when needing to merge multiple JPG or PNG images into a single PDF file, the Python programming language offers a simple and efficient solution. This article will introduce how to utilize the Spire.PDF for Python library to perform image conversion and merging operations. 1. Tool Preparation Before starting, ensure that you have installed the Python environment and the Spire.PDF for Python library. You can install it using the following command: pip install Spire.PDF Additionally, make sure you have the JPG or PNG images you want to convert and place them in a single folder. 2. Code Implementation Below is sample code to convert JPG and PNG images to a PDF file: from spire.pdf.common import * from spire.pdf import * import os # Create PdfDocument object doc = PdfDocument() # Set page margins to 0 doc.PageSettings.SetMargins( 0.0 ) # Get the path of th...