PDF Plus allows you to sign directly onto the page, but you can also create a blank signature field to be signed later. Another option is to make your signature invisible, only appearing in the Signatures tab. Adding a signature does not affect the validity of existing signatures already in the document.

Note: You should confirm you’ve made your final changes before signing a document. Changes to a PDF document after it’s been signed may invalidate the signature and change its status to Unknown.


How to sign a PDF:

  1. Choose Select Document > Digital Signatures > Sign Document > Sign Document; or select Sign Document  PDF Gold signdocument Signing a PDF in PDF Plusrom the Advanced toolbar menu.
  2. Drag a rectangle signature field onto the document where your signature will be placed. Or, left-click on the document to create an invisible signature.
  3. In the Sign Document dialog box, select a digital ID from the list or click Add to find/create a new one.
  4. Click Show Signature Options to add other information to your signature.
  5. In the Appearance page, select an appearance from the list. Or, click New to create a new appearance.
  6. Do one of the following:
    • (Recommended) Click Save As to sign the document and save it with a different file name. This command allows you to make changes to your original PDF document.
    • Click Save to sign the document and save it with the same file name. If you select this, please close the document without making any additional changes to avoid invalidating the certification.

To sign a digital signature field of a PDF:

  1. Move your page view to the location that shows the digital signature field.
  2. Do one of the following:
    • Select Document > Digital Signatures > Sign Signature Field.
    • Click the digital signature field.
    • Right-click the digital signature field and select Sign Document or Certify Document from the menu.
  3. In the Sign/Certify Document dialog box, select the digital ID with which you signed the document and enter the password if necessary. When you certify a PDF, you have to specify allowed actions for the signed PDF. Optionally, you can select Signature options. Click Next.
  4. Select an appearance from the Appearance page or create a new one.
  5. Click Save As or Save.


Signing a PDF in PDF Plus