How to Insert Digital Signature in PDF File?

Steven Hodgin | July 21st, 2017 | PDF

Portable document file format is highly used for sharing documents. Many business persons use these file format as they provide high security. All information, images, text, etc everything remains secured. In order to protect PDF from any modifications, a user can insert a password to PDF file. Moreover, a user can also add the digital signature block in PDF which is highly secure as compare to traditional hand written signature. But digitally signing PDF with a certifying signature protects the content and also shows who signed or approved the document. PDF signatures could be visible or invisible. In this blog article, we will see what are the various needs to add the digital signature and we also find the reliable solution to insert digital signature in PDF file.

What are the Various Needs to Place Digital Signature on PDF File?

There are various needs to insert digital signature in PDF file. Adding digital signature field to PDF ensures integrity, confidentiality, and authenticity. The digitally signed document is protected from any modifications. There are some user queries discussed below which describe the need to add digital signature block in PDF file. Som0e of them are given below-

“I have created PDF document containing some confidential data. So, I want to add a digital signature block in PDF. Please suggest me some utility?”

” I am working as a forensics manager in one of the reputed organization I need to secure my document by adding digital signature field to PDF file. Is there any software which could help me”?

Manual Approch to Insert Digital Signature in PDF

The user can add a digital signature in PDF document in Adobe Reader. By using some useful steps which are given below-

  • First, open the PDF file in which you want to place signature.
  • After that go to “View” and then click “Sign” from the drop box down.
  • Then small section appears on the right where a user can choose “Place Signature”.
  • A window appears requesting you to place the signature.
  • There are four different ways to place the signatures.
  • “Type my signature” in this option user can type name and you can get Adobe generate the signature.
  • “Use a webcam” in this user can use the webcam to capture the signature.
  • “Draw my Signature” in this user can free handily draw signature.
  • “Use an Image” in this user can upload an image file which contains a signature.
  • After choosing desired option user can click “accept” and will get a signature at the cursor.
  • This signature you can place anywhere on the PDF file by “left clicking” the mouse.

Limitations of Manual Solution

By using manual solution we can insert digital signature in PDF document. But with this solution user would not be able to add a digital signature from PDF file in batch. The second drawback of the manual approach is time-consumption. A user has to invest a lot of time to insert a digital signature in PDF file. Plus this solution may alter the contents of PDF document by making changes to the size of PDF file. Next limitation is while adding a digital signature in PDF file formatting may change. Due to these reasons, this method fails and there is a need for some alternative solution which could easily place digital signatures in multiple PDF files.

Troubleshoot Method to Insert Digital Signature in PDF Document

We have seen various drawbacks of the manual solution. So, to overcome these drawbacks there is a need for alternative solution to add digital signature field to PDF document. If a user wants to place watermark in PDF file to make file secure they can choose any third party tool. The tool is capable enough to create watermark and stamps so that PDF file became secure and no formatting is done.


In order to insert digital signature in PDF document, we have seen manual solution i.e with the help of Adobe Reader. But, this solution has some drawbacks. So, we should follow some alternative approaches. Moreover, if a user wants to create watermark on PDF in batch they can use any third party tool. Which can easily apply the watermark in multiple files.