Fix PDF Drop-Down Values Returning Blank After Form Submission
Question details
Users need to fix an issue where selected values in PDF drop-down menus become blank after the completed form is emailed or submitted.

- Product
- PDF form readers and editors
- Device & OS
- not provided
- Scenario
- A user completes a fillable PDF form, selects values from drop-down fields, and submits or emails the file.
- Observed behavior
- Text fields retain their data, but the selected values in drop-down menus appear blank upon receipt.
Verify the exact PDF application and version the recipient used to fill out the form, as incompatible or outdated readers often fail to save advanced form data correctly.
Configure Drop-Down Export Values and Correct Saving Methods
Ensure the drop-down fields are configured with correct export values and instruct users to save the document properly.
Often, the issue stems from missing export values in the drop-down properties or users saving the file via 'Print to PDF' in a web browser, which flattens the file and strips the selected metadata.
Open the PDF in edit mode, right-click the drop-down field, go to Properties, and select the Options tab to confirm each item has a corresponding Export Value.
Open the form in a standard PDF viewer like Adobe Acrobat Reader or WPS Office, select a drop-down value, and verify the value remains visible.
Instruct end-users to use 'Save As' to create a new copy of the completed form rather than using browser-based 'Print to PDF' or submitting a flattened copy.

Create and Fill PDF Forms Effectively with WPS Office
WPS Office provides robust PDF editing tools that ensure drop-down menus, text fields, and form submissions work seamlessly without losing data. It serves as a comprehensive, lightweight solution for all your document needs.
- 1. Open PDF in WPS: Launch WPS Office and open your fillable PDF form document.
- 2. Access Form Tools: Navigate to the 'Form' tab in the top ribbon to view all interactive field options.
- 3. Add or Edit Drop-Downs: Select the Combo Box tool to add a drop-down menu, or double-click an existing one to set item names and export values.
- 4. Save and Share: Fill in the required fields and click 'Save' to retain all selections before emailing the document to recipients.

Frequently Asked Questions
Why do PDF drop-down menus work in Preview mode but fail when emailed?
Preview modes often cache temporary selections. If the drop-down lacks defined export values or the user saves the file incorrectly (like printing to PDF), the actual data is stripped when the file is finalized and emailed.
How do export values affect PDF form submissions?
An export value is the underlying data sent when a form is submitted. If a drop-down item has no export value assigned in its properties, the form will submit a blank response for that field.
Can users fill out PDF drop-downs using a web browser?
While some modern browsers support basic text fields, many struggle with drop-down menus and combo boxes. It is highly recommended to fill out complex forms using dedicated PDF software to ensure data is saved properly.
How can I prevent a PDF form from being flattened during saving?
Instruct users to click 'File' > 'Save' or 'Save As' directly within their PDF reader. They should avoid using 'Print' > 'Save as PDF', as this flattens the document into a static image and removes interactive form data.




