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How To Edit A Signed PDF

PDF files have become a very useful tool in the digital world. They are a file type that is used to share information with other users, but often require editing or modification. In some cases, PDFs are protected and digitally signed, which can make it difficult to edit a signed PDF. However, there are some solutions and tools that will allow you to edit a PDF without any problems.

Nowadays, there are different ways and tools to edit a signed PDF, so you don't have to worry about it. It's a matter of finding the most suitable way for you depending on the operating system you have installed, if you have an internet connection, etc. What is important is to choose the right tool for it, and we will help you.

The first thing you need to know is that editing a PDF does not mean that all the information will be modified. You have the possibility to modify specifically what is not correct or that there has been a change and it is necessary to leave it reflected in the document.

How To Edit A Signed PDF Step-By-Step

One of the fastest ways to edit a signed PDF is through an online platform. It is fast because all you need is an internet connection and a web browser. You can do the same at FormatPDF.com where, in addition to editing PDF, you have other options such as compress PDF, merge PDF, etc.

To perform this edit, follow these steps:

  1. Visit this link https://www.formatpdf.com/en/edit-pdf/
  2. You will find an option that says "Select PDF file" in a red rectangle. Click this option, or alternatively, you can drag the documents directly into the red rectangle.
  3. Next, a new screen will open, where the PDF will appear. Here the text areas will be marked so that you can modify them.
  4. When you are done, click on the "Download" button and you will have a new edited file. Easy!

What To Consider When Editing A Signed PDF File

When you decide to make these changes to the PDF file, it is normal that you may have some doubts about what will happen to the information inside the file, as well as other elements:

  • The time it takes to upload the PDF file to the platform will depend on its weight. It will not take the same time if it is a single-page PDF as if it is a multi-page PDF.
  • If you decide to use the option that says "Write on PDF" you will find several options such as adding a rectangle, a comment, including text of all styles, drawing over it, etc.
  • Using an online platform will save you time, and at no time will leave a watermark or similar so you can rest assured.
  • You will be able to make use of this function both on a computer and on other types of tablet or mobile devices.
  • If you wish, you can also make use of our Sign PDF tool.

Which Programs Allow You To Edit A Signed PDF

Beyond the options mentioned above, there are other alternatives to consider. Depending on your operating system, you may find specific programs that allow you to edit the PDF that is already signed. This will be useful in cases where you do not have internet access.

How To Edit A Signed PDF On A Computer

Performing these types of actions from the computer is always easier than doing them from a mobile because they allow greater precision in all aspects. Within the options available for the different operating systems you will find the following:


The easiest way to edit a PDF in Windows is to do it with the Adobe Acrobat program. Although it will ask you to have a paid subscription to access all its tools, it offers you several options to apply to PDF files.

To edit the signed PDF it will be as simple as opening it in Adobe and among the options in the side column you will find one that says "Edit PDF". When you click on it, all the available tools will appear for you to execute the one you need.


On Mac, you have your own program called "Preview". In the "Tools" menu you have several options to choose from to add text, underline, etc. The difference here will be that to modify a previous text you will have to delete it and retype it, as it works differently from the previous methods.


To edit a PDF on Linux you will need a free code program such as Okular, PDF Escape, Evince or Inkscape. The way to modify the file is similar to the previous ones because once the document is opened you will have to click on "Edit" and make use of the available tools.

How To Edit A Signed PDF On A Cell Phone Or Tablet

If you need to make these modifications on a mobile, then you will have to download an application with which you can do all the actions.


For those who have an Android device, you can download the Adobe app or otherwise search in the Play Store by typing "Edit PDF" and see which applications appear compatible for you.

iPhone (iOS) Or iPad

As far as iOS is concerned you have iAnnotate, PDFpen or Adobe Acrobat's own app. You will have to pay attention in all cases where the applications are not paid since they could limit their use.

In any case, you can always opt for the online PDF editing option on the FormatPDF.com platform. The only requirements are that you have an internet connection and a browser available to make all the modifications you require. As you can see, it's quite simple so don't worry if you have to make any changes to a signed PDF because you can do so immediately.

Husain has been around the internet ever since the dial-up days and loves writing about everything across the technosphere. He loves taking tech apart and see what makes them tick, without necessarily putting it all back together.
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