Many friends have encountered the situation of "need to add a digital signature to the document", and some people may be confused, what is a digital signature?How do you add a digital signature to an electronic file such as a PDF?Don't worry, I'll tell you more about it today.
Before we explain digital signatures, let's first understand electronic signatures, which are different from traditional signatures on physical paper and refer to signatures made electronically. Digital signature is a type of electronic signature, which refers to the technical means of encrypting and decrypting electronic data by using "asymmetric cryptographic encryption" to achieve electronic signatures.
In other words, the use of digital signatures can not only play the same role as traditional signatures, but also ensure that the sender of the data is the signer himself, and ensure the integrity of the signature information, even if there are any subsequent changes, will be reflected in the digital signature.
So, how do you add a digital signature to a PDF file?updf is a software that makes it easy!
UPDF is a professional PDF document processing tool, providing both security and privacy of digital signature tools, the use method is also very simple, just open the PDF document that needs to be digitally signed, click the "Comment" button on the left side of the page, and various annotation tools will appear at the top of the page.
Then, click on the pen-shaped "Signature" tool on the far right to create your own digital signature.
UPDF supports DIY settings for digital signatures, and users can choose different thicknesses and different colors to sign, choosing more diverse.
Seeing this, do you know more about digital signatures?With the popularization of digitalization, we will use digital signatures more frequently in our lives, so UPDF is an important software!Do you want a free digital signature?Then hurry up and **updf and try it!