Stamp accession numbers onto the batch of digitized items so they match our reference system: apply Bates numbers '[ra…
Open the PDF file you want to use as the base for your custom stamp in Acrobat.
Select the area where you want dynamic text (such as date or username) to appear and add a text field using the Prepare Form tools.
Best practiceUsing a text field instead of static text allows you to insert JavaScript for dynamic content.
Right-click the new text field and choose to open its Properties.
Go to the Actions tab in the Properties dialog.
Set the action to Run a JavaScript, then enter code to insert the current date or username (e.g., for date: event.value = util.printd('mm/dd/yyyy', new Date()); for username: event.value = identity.name;).
CautionThe username field uses the identity.name property, which must be set in Acrobat’s Preferences > Identity.
Save the PDF form with the dynamic field as a new file.
In Acrobat, go to the Stamp tool and choose to create a new custom stamp, selecting your saved PDF as the source.
Complete the custom stamp creation process, assigning a category and name.
Apply your custom stamp to a PDF; the dynamic text field will automatically populate with the current date or username each time it is placed.
Best practiceIf the dynamic field does not update, ensure JavaScript is enabled in Acrobat’s preferences.
When you use a custom stamp with a dynamic text field, Acrobat runs the JavaScript each time you place the stamp, updating the field automatically.
This runs in the Acrobat app - there is no separate API for this task.
A dynamic stamp is a special type of stamp that automatically fills in details like your name, the current date, and time. This information comes from your Identity preferences in Acrobat. It matters because it saves you time by not having to type these details manually for every stamp, ensuring consistency across documents marked with dates or names.
You should use a digital signature instead of a stamp when document authenticity is important because a stamp is only an annotation; it's like a sticker on the page. It does not provide cryptographic proof of who created it or if the document has been changed. A digital signature, however, uses encryption to verify the signer's identity and confirms that the document has not been altered since it was signed, providing legal proof.
| Feature | Standard Stamp | Custom Stamp |
|---|---|---|
| Origin | Pre-made options in Acrobat | Created by the user |
| Content | Common words like 'APPROVED', 'DRAFT' | Any image or text the user provides |
| Flexibility | Limited to built-in designs | Highly flexible, can use own files (PDF, JPEG, etc.) |