Fix Digital Signature Hidden Behind PDF Form Field in Acrobat
Question details
Users find that their ink-based or Fill & Sign signatures are obscured by the purple signature field box in PDFs.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Adding signatures to a PDF form using the Fill & Sign feature, digital ink, a mouse, or a trackpad.
- Observed behavior
- The drawn signatures disappear behind the active purple signature field box, whereas certificate-based signatures display correctly without issue.
Before modifying your PDF, verify whether your document requires a legally binding certificate-based digital signature or just a simple handwritten electronic signature, as this will determine the best way to fix the issue.
Remove the Active Signature Field
Use this solution if a formal digital certificate is not required, allowing standard ink signatures to be fully visible.
Active signature fields function as annotations that sit above standard page elements. Because of this layering, they can obscure ink-based marks or Fill & Sign additions placed on the page layer underneath.
Launch your PDF file in your editor and access the form editing or preparation tools.
Select the purple signature field box that is hiding your handwritten signature and press the Delete key.
Use the Fill & Sign tool or your drawing tool to sign directly on the page document without the interactive field blocking it.
Use Certificate-Based Signatures
If the document mandates an interactive signature field, use formal certificate-based tools instead of drawing an ink signature.
Easily Sign PDF Forms with WPS Office
WPS Office provides a highly compatible PDF reader and editor that seamlessly handles both drawn signatures and interactive form fields without frustrating layering issues.
- 1. Open your PDF: Launch WPS Office and open your PDF form.
- 2. Access the PDF Signature Tool: Navigate to the 'Insert' or 'Fill & Sign' tab and click on the 'Sign' button.
- 3. Create or Insert Signature: Draw, type, or upload an image of your signature. Place it directly onto the designated area without form field interference.
Frequently Asked Questions
Why does my drawn signature disappear behind a PDF form field?
In some PDF editors, interactive form fields act as a separate annotation layer placed on top of the base document content. When you draw a signature, it gets placed on the base layer, causing the active interactive field to visually cover it.
What is the difference between Fill & Sign and a digital signature?
Fill & Sign is typically used for applying an electronic image or drawing of your handwritten signature. A digital signature, however, uses a certificate-based digital ID to encrypt and verify the authenticity and integrity of the document.
Can I flatten a PDF to make my ink signature visible?
Yes. If you 'Print to PDF' or use a dedicated flatten feature, the interactive fields merge with the main document layer, making everything visible. Keep in mind that doing this removes all interactive capabilities from the form.
