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How to Apply a Digital Signature?

If you frequently email PDF documents containing sensitive information, adding a digital signature to the document can reassure the recipient of the document's authenticity. A digital signature is an electronic verification of the identity of any persons who have signed the document. The signature also works as a security feature; it remains on the document unless the document has been altered by an unauthorized person. Free PDF to Image Converter can help you sign your PDF digitally. Download and install Free PDF to Image Converter to apply a digital signature.


Launch Free PDF to Image Converter and click "Tools" tab. Then click "Apply a Digital Signature". Enter information in each box:

Input File Name - click "Browse" to select the PDF file you want to apply a digital signature

Open Password - enter the password if the PDF file is encrypted.

Signature Field Name - the name of the signature field to sign. If the field with this name does not exist it will be created.

PFX file name - the path and name of the PKCS#12 certificate/private key file (.pfx file).

PFX password - the password to open the PFX file.

Reason - an optional string indicating the reason for signing.

Location - an optional string indicating the location that the signing was done.

Contact Information - an optional string indicating the contact information of the signer.

Apply Digital Signature


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