Last updated on 2026-07-28

How to Sign PDF

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Note:

Our signature feature is currently available only on PDNob Online - Sign PDF Online Free - and is completely free to use. It includes timestamping, audit logs, and compliance with e-signature standards (ESIGN, UETA, etc.). The desktop version is still evolving and does not yet support the full signing capability.

Adding a signature in Tenorshare PDNob is quick and adaptable. Whether you prefer drawing, typing, or uploading your signature, the tool provides multiple ways to complete the process efficiently. Follow the steps below to choose the method that fits your workflow.


  • Launch the Tenorshare PDNob software on your computer.
  • Click the "Open PDF" button to import your document.
    open pdf from device
  • Select your file and click "Open" to load it into Tenorshare PDNob.
  • Go to the "Comment" tab, then choose "Signature".
    signature
  • Click "Create" to open the signature setup panel.
    create signature

Method 1: Create Signature from Mouse

  • Select the "Draw" option and use your mouse or stylus to handwrite your signature.
  • After completing the drawing, click "Create" to insert it into the document.
    create signature drawing

Method 2: Create Signature from Keyboard

  • Click the "Type" option to generate a typed signature.
  • Enter your name or initials, then click "Create" to apply it to the PDF.
    create signature write

Method 3: Create Signature from Image

  • Choose the "Image" option and click "Choose File" to upload your signature image.
    create signature image
  • Select the file from your device and click "Open" to upload it into Tenorshare PDNob.
  • Preview the signature and click "Create" to confirm.
  • Click anywhere in the document to place your signature precisely where needed.
    place signature image

Method 4. Create Certificate-based Signature

  • Open PDF and choose the Form tab, then click the Sign button to create a digital signature field.
    create digital signature field
  • Convert back to Home tab, double click the signature field to arouse the signature setting. Click New ID.
    new id
  • If you have a certificate-based signature in local files, you can upload it by clicking the folder icon to choose and upload your signature file; if you need to create a new one, then choose I want to create a new digital ID.
    upload or create digital id
  • Choose the certificate-based signature type based on your need, then fill the blank of basic signature info, and set the six digit password.
    signature info and password
    sign with certificate
  • After you picked or created a certificate-based signature, enter the password again to sign the PDF with certificate.
    save signed pdf
  • Choose a designated address to save your certificate-signed PDF.