Search Results for: password

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
Posted in GroupDocs.Watermark Product Family | Tagged , , , ,

Password Protection of PDF Files in Java

There are different security levels that you can provide to your confidential documents. You can apply watermarks, encrypt files, or you can make your documents password-protected. In this article, we will see how to programmatically add password protection to the PDF files within the Java applications. Further, we will learn to change the password and also to remove the passwords to unlock PDF files.

The following topics are discussed in this article:

  • Java API for Password Protection of PDF Files
  • Password Protect PDF Files in Java
  • Change PDF Password in Java
  • How to Remove PDF Password - Unlock PDF
Posted in GroupDocs.Merger Product Family | Tagged , , , , ,

How to Password Protect and Remove Protection from Word Documents using C#

Let's discuss how we can restrict the access to the Word documents by making them password protected. We have already learned to lock and unlock PDF, and PowerPoint files. In this article, we will see how to password protect a Word document using C#. Further, we will learn to remove the password to unlock Word documents, and lastly, how to change the existing password of DOC & DOCX files within the .NET applications.

The following topics are discussed in this article:

  • .NET API to Password Protect Word Documents
  • Add Password to Word Document
  • Change Password of Word Document
  • How to Remove Password from Word Document
Posted in GroupDocs.Merger Product Family | Tagged , , , , ,

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:

Continue Reading
Posted in GroupDocs.Watermark Product Family | Tagged , , , , ,

Lock & Unlock PowerPoint Files with Password using C#

Today, we will provide password protection to our presentation files programmatically. In this article, we will see how to lock PowerPoint presentation files with password protection in C#. Further, we will learn to unlock these by removing the password and also how to change the existing password of PPT & PPTX presentation files.

The following topics are discussed in this article:

  • .NET API to Protect PowerPoint PPT/PPTX with Password
  • Lock PowerPoint Files by adding Password
  • Change PPT/PPTX Password in C#
  • How to Remove PowerPoint Presentation Password
Posted in GroupDocs.Merger Product Family | Tagged , , , ,

Lock & Unlock PDF Files with Password using C#

Let's learn to secure our documents from unauthorized access. Previously we discussed adding text and image watermarks to the documents to avoid and illegal use. In this article, we will see how to add password protection to PDF documents to get them locked using C#. Additionally, we will change the existing password and also learn to remove the password to make the PDF unlocked.

The following topics are discussed in this article:

  • .NET API for Password Protection of PDF files
  • Lock PDF Files by adding Password
  • Change PDF Password in C#
  • How to Remove PDF Password - Unlock PDF
Posted in GroupDocs.Merger Product Family | Tagged , , , ,

Password Protected Files Comparison Issue is Resolved

GroupDocs.Comparison for Java 19.3 rolls out with major bug fixes. When password protected files were compared, result was null. This might be a showstopper for you but not anymore.

Moving ahead, comparing a PDF with itself was not working, result was null. We fixed this issue.

Most importantly, MultiCompare was also returning null. Code below explains how it works.

You can compare a source file with multiple target files. Sounds appealing, isn’t it? Don’t wait, download the latest release and … Continue Reading

Posted in GroupDocs.Comparison Product Family | Tagged