How to Create a Drop-Down List in an Acrobat Custom Stamp
Question details
The user needs to create a custom dynamic stamp in Adobe Acrobat containing interactive fields, including a drop-down list, to process electronic invoices.
- Product
- Adobe Acrobat DC
- Device & OS
- not provided
- Scenario
- Creating an interactive custom stamp for approving electronic invoices with specific dynamic fields such as amount, approver, date, description, and an account list.
- Observed behavior
- The user wants to build a stamp that supports form-like editable values, drop-down selection, and post-stamp digital signatures for authorized users.
Ensure you have Adobe Acrobat Pro or DC installed, as Adobe Reader does not support creating custom dynamic stamps or advanced form editing.
Create a Dynamic Custom Stamp Using JavaScript in Acrobat
Use Acrobat's dynamic stamp feature combined with custom JavaScript to prompt users for inputs like amount, description, and account selection.
Standard PDF stamps are static images. To include drop-down lists and editable text fields (like amount or description), you must create a dynamic stamp. This involves designing the stamp artwork as a base PDF, adding custom form fields, and using JavaScript to prompt the user for input when the stamp is applied.
Design your stamp layout including static labels for Amount, Date, Approver, etc., in a program like Word or Illustrator, and save it as a PDF document.
Open Acrobat, go to Tools > Stamp > Custom Stamps > Create, and browse for your base PDF to import it.
Acrobat saves custom stamps in a system folder. On Windows, navigate to C:\Users\[Username]\AppData\Roaming\Adobe\Acrobat\[Version]\Stamps and open the newly generated PDF file.
Use the 'Prepare Form' tool to add text fields over the blank areas of your stamp design where the dynamic data will go.
Right-click each form field, select Properties, and under the Calculate tab, add custom JavaScript scripts that trigger prompt dialogs (e.g., app.response('Enter Amount:')) or pop-up menus when the stamp is placed.
Alternative Workflow Using Fillable PDF Form Fields
Instead of a complex dynamic stamp script, embed standard form fields directly onto the invoice template for reliable drop-down functionality.
Edit PDFs and Manage Forms Easily with WPS Office
WPS PDF provides an intuitive way to add custom stamps, insert interactive form fields, and sign documents seamlessly without complex scripting.
- 1. Open your PDF invoice: Launch WPS Office and open your electronic invoice PDF.
- 2. Add custom stamps: Navigate to the 'Comment' tab and click on 'Stamp' to create or insert a custom image stamp for approvals.
- 3. Insert interactive fields: Switch to the 'Form' tab, where you can quickly add text fields, drop-down menus, and digital signature boxes to capture dynamic data.
- 4. Save and distribute: Save the document to preserve your interactive invoice workflow for your team.
Frequently Asked Questions
Can I add a standard drop-down menu directly into a static PDF stamp?
No, standard PDF stamps act like static images. To create a stamp that prompts users to select from a drop-down list, you must use dynamic stamps configured with custom JavaScript.
Where are custom stamp files saved in Adobe Acrobat?
Acrobat saves custom stamps in a hidden system folder. On Windows, it is typically located in C:\Users\[Username]\AppData\Roaming\Adobe\Acrobat\[Version]\Stamps. You must edit the PDF file within this folder to add dynamic form fields.
Why is my dynamic stamp not prompting for input when placed?
This usually happens if the JavaScript calculation scripts attached to the form fields within the stamp file contain syntax errors, or if JavaScript execution is disabled in Acrobat's security preferences.
Can I embed a digital signature field inside a custom stamp?
Embedding a functioning digital signature field directly inside a stamp object is not supported. It is generally recommended to apply the visual stamp first and then apply a standard digital signature field to the document separately.
