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[.NET Core] .NET/C# Use itext to add text watermarks to PDFs

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Posted on4 days ago | | | |
Requirements: There are public PDF documents available on the website. Visitors can preview PDFs, but downloading them requires registration and login. When users preview PDF content, they need to add a watermark to the source file.

iText represents a new generation of SDK aimed at developers, designed to help them fully leverage the advantages of PDF. The iText PDF library is equipped with a more powerful document engine, advanced and low-level programming features, and the ability to create, edit, and enhance PDF documents, supporting nearly every workflow. iText allows you to build custom PDF scenes for web, mobile, desktop, or cloud applications in .NET.

iText's development draws on nearly ten years of experience from iText 5 (iTextSharp). It is a simpler, higher-performing, and more scalable library that can gradually address the increasingly severe challenges in today's document workflows.

Official Website:The hyperlink login is visible.

First, nuget quotes as follows:

The code is as follows:
As shown below:



Attached quote:




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