How to a digital signature from certificate to a PDF file?

Question:In the application a user will upload a PDF file and then upload a personal signature created using a digital pen and company certificate. How can I embed this signature in the PDF file? Is there any solution on VeryPDF?

Answer: When you need to add digital signature and company certificate, maybe you can have a free trial of this software VeryPDF PDF Editor, by which you can finish your task. This software is Window GUI version, if you need to use it together with other application, please choose Professional version.  By this GUI version software, you can also do lots of things like editing text, hyperlinks and other elements of PDF, and add comments and annotations to PDF. It can also convert PDF to other formats. Please check more information of this software on homepage, in the following part, I will show you how to use this software.

Step 1 . Install PDF Editor.

  • This software is GUI version, so you need to install it. Download PDF Editor and install it by double clicking the exe file and following installation message.
  • When installation finishes, there will be an icon on desktop. Simply click it then you can launch it. The following snapshot is from the software interface, please have a check.

software interface of PDF Editor

Step 2. Add digital signature to PDF

  • When you open software interface, please click button Advanced then you will find dropdown list. Please choose option Digital Signature then you will see the following menu option.

add signature

  • There are four menu tabs, please choose Signature tab. Here you can choose Certificate and add time stamp. When you click button Select then you will see the following snapshot.

choose certificate

  • Here you can upload certificate file from disk. This application also can help you upload certificate from password protected file. When you finish setting, please click button OK then you can back to first tab. The click button Process to add digital signature.
  • When adding finishes, you will be reminded to open output or not.
  • The above method is for adding digital signature from certificate. If your client digital signature saved in image format, please click button Edit Content then go to stamp to choose image digital signature to PDF file.
  • When you finish adding, click button File then save as to save it as a new PDF.

By this software this method, you can add digital signature to PDF easily. During the using, if you have any question, please contact us as soon as possible.

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