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Add hidden messages to your PDFs with these free programs

Surely most of you already know first hand that these files are used to add text, images, tables and much more. In addition, they are used to store documentation for the future or even to fill in official forms. They are a clear alternative to other office documents such as DOCX that we created with Word. It is precisely for all these reasons that these files in PDF format are used today in both personal and more professional environments.

Now we are going to show you how to add your own custom hidden notes to any PDF for free and easily. We can do this through the so-called notes stickers or post-it that we have the possibility of placing in any document of these characteristics. The striking thing about all this is that this note is usually hidden and you only see a small colored icon. This is the one that precisely indicates its presence and location in the PDF. Thus, it is enough that we double click or pass the mouse over the icon to read its content.

In this way we will have the opportunity to leave hidden notes with their corresponding messages in any PDF. Although at first this may seem like a somewhat complicated task, there are certain applications that do not make it much easier for you. We will talk about precisely the same ones below so that you can carry out this type of task. All this will be very useful when we need add comments to any document, but without showing them until necessary.

PDF Bob

Here we find an interesting web application that allows us to add hidden notes to our PDFs easily. Thus, through PDF Bob, we will only have to click on the button Start PDF Editing to access your work desk. Once we have uploaded the corresponding file from our hard drive, we will be able to edit and modify it, all thanks to the available tools.

bob pdf

In turn, the application allows us to insert hidden notes by simply clicking on the button in the shape of a text box located on the left side of the Interface. At that moment a small window will appear so that we can type the content of it. Once we have finished we find a small yellow icon that we can place anywhere in the PDF for later consultation.

PDF4Me

In the event that we want to try another alternative tool for these tasks, we can also opt for PDF4Me. Here we will have at our disposal an application that allows us to carry out a multitude of tasks related to these office files. In addition, it allows us add hidden notes that we mention to you in these lines with just one mouse click.

PDF4Me pdf

It is interesting to know that here we will have the possibility of choose color of the small icon that will be created to later access the content of the hidden note.

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