![]() Here is how to encrypt PDF for free with LightPDF: And there is no need to install anything, but it can easily process your files. ![]() It is safe to say this is a must-have application, not only for adding PDF passwords, but for other PDF enhancing needs. Aside from serving as a PDF editor, this web-based PDF application is also packed with various other PDF functions, including conversion, compression, rotation, merging, splitting etc. If you are searching for a totally free, but efficient and outstanding, PDF tool, LightPDF should be on that list. Optimal Tools to Encrypt PDF Online LightPDF ![]() Now, scroll down to discover them and figure out how they can work for you. In this post, we summarize three tools to help you password protect PDF for free. However, what if the content is highly confidential and you don’t want it public to everyone? Then, you need to use a password to protect your PDF documents. As we all know, PDF is not as easy to be modified as Word, which makes it widely used among businessmen and other users.
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