PDF Editing Issues

How to Replace a Signature After Signing an Adobe Sign PDF

Algirdas JasaitisAlgirdas Jasaitis Nov 3, 2026 869 views

Question details

The user wants to know if they can replace an applied signature on an Adobe Sign document and how to prevent a black rectangle from appearing around the signature when the document is printed.

How to Replace a Signature After Signing an Adobe Sign Document
Product
Adobe Sign
Device & OS
not provided
Scenario
Printing a completed signed document and attempting to modify a signature post-signing.
Observed behavior
The printed document displays a black rectangle around the signature, and the user is unable to easily edit or replace the signature on the finalized document.
Before you start

Verify whether the document has been fully certified and locked by the signature workflow, as certified digital signatures restrict further editing to protect document integrity.

Solution 1Recommended

Update Your Saved Signature with a Transparent Image

Since locked digital signatures cannot be directly replaced without invalidating the document, you must update your signature settings with a transparent image and sign a new copy.

Once a document is fully signed using a digital workflow like Adobe Sign, it is cryptographically locked to prevent tampering. You cannot directly replace a signature on the finalized document. To fix the black rectangle issue for your workflow, you must update your default signature image to one with a transparent background and request a new signature.

1
Access signature settings

Log in to your Adobe account or Adobe Sign dashboard and navigate to your Account Settings or Profile preferences.

2
Remove the problematic signature

Locate the 'Signature' section and delete the existing signature image that causes the black rectangle printing issue.

3
Upload a transparent image

Upload a new signature image saved in PNG format with a transparent background. This prevents printers from interpreting the background as a solid black block.

4
Sign a new document copy

Apply your newly updated transparent signature to a fresh, unsigned version of the PDF document.

Update Your Saved Signature with a Transparent Image
Document Invalidation Risk: Attempting to use third-party PDF editing tools to force-remove a certified signature will break the document's digital seal and invalidate its legal status.
Professional PDF Tools

Sign PDFs Effortlessly with WPS Office

Avoid printing glitches and easily manage your digital signatures using WPS Office. You can add transparent signatures, sign documents securely, and edit PDFs without hassle.

  1. 1. Open your PDF: Launch WPS Office and open the PDF document you need to sign.
  2. 2. Access the Sign tool: Go to the 'Insert' or 'Protect' tab on the top ribbon and click on the 'Sign' button.
  3. 3. Create a signature: Choose 'Create Signature'. You can draw, type, or upload an image file (preferably a PNG with a transparent background).
  4. 4. Apply and save: Place the signature anywhere on the document, adjust the size, and save your finalized PDF.
Easily create and insert transparent signature imagesFully compatible with standard Adobe PDF formatsComprehensive PDF editing tools in a lightweight applicationManage multiple signature styles seamlessly
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Frequently Asked Questions

Why does my signature have a black box when printed?

This usually happens if the uploaded signature image is a JPEG or lacks transparency. Certain printers interpret the non-transparent white background of an image as a solid black block. Using a transparent PNG resolves this.

Can I remove my signature from a PDF after saving?

If the PDF was simply saved locally without digital certification, you can often select and delete the signature block using PDF editing software. However, if it was signed via a certified digital workflow, the document is locked and the signature cannot be removed.

How do I make my signature background transparent?

You can use basic image editing software or free online background remover tools to erase the white background of your scanned signature. Ensure you save the final file as a PNG before uploading it to your signing software.