Category Archive: GroupDocs.Watermark Product Family

Official blog with announcements of latest supported features, hot fixes, technical articles, tips and videos of GroupDocs.Watermark – A document watermarking API for .NET.

Watermark Password Protected Documents using C#

Watermarking is one of the ways to protect your documents from illegal use; branding your files; mentioning your documents as drafts or confidential. In order to watermark your files programmatically, this article guides you on how to add watermark to your password-protected files using C#. We will separately look into adding text and image watermarks to the protected files.

The following topics are discussed in this article:

  • .NET API to Watermark Password Protected Files
  • Add Watermark to Protected Files using C#
    • Apply Text Watermark
    • Apply Image Watermark
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Watermark Password Protected Documents in Java

Watermark Protected Docs using Java

Watermarks can be used to protect the content and claim ownership of your documents. Similarly, these can also be used for branding or labelling your documents as drafts. This article discusses how to add watermarks to the password-protected files in Java. We will add text, as well as image watermarks to the protected files using code examples.

The following topics are discussed here:

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Watermark Excel Sheets in Java

Watermarks can be added to the documents either to protect the document from piracy, or to show any sumbol or message. In other posts, we discussed ways to watermark different documents, images, and presentations. In this article, you will learn how to add watermark to Excel workbooks in different ways in Java. We will be applyling watermarks separately using each approach.

The following topics are covered in this article:

  • Watermarking API for Java
  • Add Text Watermark to Excel Sheets
  • Apply Watermark to Specific Excel Sheet
  • Add Watermark to Excel Sheet as Background
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Watermark Excel Sheets using C#

We have already discussed ways to watermark different documents, images, and presentations. Today, we will be discussing how to add watermark to an Excel workbook in different ways using C# with the .NET application.

The following topics are covered in this article:

  • Add Text Watermark to Excel Sheet
  • Apply Watermark to Specific Excel Sheet
  • Add Watermark to Excel Sheet as Background
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Watermark PDF Files using C#

To protect your files from any illegal use or to apply branding to your documents, watermarks can be used . In this article, you will learn to programmatically add the watermarks to PDF files using C#. We will separately looking into adding watermark text and image watermarks.

The following topics are covered in this article:

  • .NET Watermarking API
  • Apply Text Watermark to PDF
  • Apply Image Watermark to PDF
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Watermark PDF Files in Java

Whether you want to apply branding to your documents or you want to protect our files from any illegal use, the watermark does the job for you. In this article, you will learn to programmatically add the watermarks to your PDF files using Java.

The following topics are covered in this article:

  • Java Watermarking API
  • Apply Text Watermark to PDF
  • Apply Image Watermark to PDF

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Watermark Presentation Slides using Java

For the protection of the documents and presentations from illegal use, we can use watermarking. In this article, we will learn to programmatically apply text and image-based watermarks to the presentations or specific slides of a presentation in Java. In another post, we have discussed applying watermarks to presentations using C#.

The following topics will be covered in this article:

  • Java Watermarking API
  • Add text watermarks to presentation slides
  • Add image watermarks to presentation slides

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Add Watermark to Presentation Slides using C#

Watermarks are normally used to protect the documents from any unauthorized use. To protect your presentations and to claim ownership, today we will learn how to programmatically add text and image watermarks to the Microsoft PowerPoint presentations within .NET applications using C#. In a separate article, we have seen applying watermarks to images in C#.

The following topic are separately and briefly covered in this artile:

  • Add text watermarks to presentation slides.
  • Add image watermarks to presentation slides.

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Add Watermark to Images using C#

Add Text Watermark to PNG image using Java and .NET

Let's see today, how to add watermarks to images. This helps you branding your official photography, and protects your pictures from any unauthorized use. This article will guide you to programmatically add text and images watermarks to your image files using C#. In an earlier post, we have seen the same to add text and image based watermarks to images using Java. After reading this article, it will not be difficult for you to add watermarks to JPG/JPEG, PNG, WebP, GIF, TIFF, JP2, BMP images using C# within your .NET application.

Let's now separately see, how we can easily add text and image-based watermarks on your pictures, photos, or image files in C# using the .NET Watermarking API for documents and images.

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Find and Remove Watermarks from Documents in Java

This article is useful for Java developers who are looking for a way to find and remove text or image watermarks from PDF, Word, Excel, PowerPoint, and Visio documents. In one of our posts we have learnt finding and removing watermarks from documents in C#. Let's now jump to quickly see a little about a Java API that allows adding, finding and removing watermarks from various documents in different ways.

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