Lori DeFurio February 20, 2007
I’m often asked how to create a custom dynamic stamp by users who have noticed the dynamic stamp capability in Adobe® Acrobat® software. This tip reviews how to produce your own.
Note: Dynamic Stamps were first added in Acrobat 6. The instructions here are specifically for Acrobat 8, but most of the instructions are the same for earlier versions of Acrobat.
Note: The Text Field form tool is required, which means you must use Acrobat Professional to create a custom dynamic stamp.
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This tip is also available as a video.

Figure 1. Using a dynamic stamp in Acrobat 8 Professional.
A dynamic stamp consists of the image of the stamp and a Text Form Field with JavaScript that creates the dynamic information (Figure 2).

Figure 2. A dynamic stamp consists of the PDF image and a Text Form field with JavaScript.
Your dynamic stamp can be stored in one of two locations for Acrobat 8 in Windows:

Figure 3. Location of the PDF containing the default dynamic stamps in WindowsXP
Choose Comments > Comments & Markup Tools > Stamps > Create Custom Stamp.
Select the file you want to be your custom stamp. The stamp can be in many file formats, including PDF, a graphic (*.tif, *.bmp, *.gif, *.jpg, *.png, *.pcx), a native Microsoft Office document (*.doc, *.xls, *.ppt), an AutoCAD® drawing, or an HTML page. To see all the possible formats you have available - select File > Create PDF > From File and check the Files of Type drop-down list.

Figure 4: List of file formats that can automatically be converted to an Acrobat stamp
See larger image
Create or choose a category and name your stamp. (See Figure 4).

Figure 5. Custom stamp with a new category and name
When you select OK, your stamp is automatically created in the Application Data directory (c:\Documents and Settings\login name\Application Data\Adobe\Acrobat\8.0\Stamps). The actual name of the PDF stamp created will be generated by Acrobat. In this example, the file name is mkWXAu6ok-vDmYeXdpd4EB.pdf. (Note: you can rename this file if you want.) To determine which stamp is the one you just created, sort the stamps by date modified. The newest stamp is yours.
Open Dynamic.pdf in the Acrobat 8\Acrobat\plug_ins\Annotations\Stamps\[language] folder and turn to the page containing the automatically-generated text you want, such as Revised on page 1.
Choose the Text Field tool from Tools > Forms > Text Field tool. Select the text field on the stamp and copy it.

Figure 6. Form field in the default Revised dynamic stamp and its JavaScript
See larger image
Open the PDF file containing your custom stamp and paste the text form field, which includes the JavaScript to display the dynamic information.
Save the PDF file. You now have a dynamic custom stamp.

Figure 7. Final custom stamp
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12 comments
Lori Kassuba
1 week agoHi Kim,
Here is a link to a more recent tutorial on this subject:
http://acrobatusers.com/tutorials/creating-a-custom-dynamic-stamp-infographic
In the custom calculation script, you can change the format to:
event.value = (new Date()).toString();
AFDate_FormatEx(“h:MM tt, mmmm dd, yyyy”);
But, just remember that it was setup this way so that there aren’t any issues with consistent display of the text in the form field (i.e., the form field is large enough to display the number of characters in a month).
Thanks,
Lori
Kim
1 week agoHow do I create a new dynamic stamp for NOT APPROVED with my information on the bottom and the date?
Also, how do you change the date format so it will spell out the month. The current format spells June as Jun 6, 2013. I don’t think this is appropriate in this format.
Lori Kassuba
1 month agoHi Christina,
Please post your question here and select the JavaScript category:
http://answers.acrobatusers.com/AskQuestion.aspx
Thanks,
Lori
Christina
2, 2013-04-18 18, 2013Hi,
Is it possible to create a Custom Calculation Script that will promt for a digital signature?
If yes, what would this script be?
Thanks.
Lori Kassuba
9, 2013-03-11 11, 2013Hi Andy,
You could create an Action to do this using Acrobat Pro. Here is a link to an existing Action that does something similar:
http://acrobatusers.com/assets/uploads/actions/Flatten_Fields_and_Comments.pdf
Thanks,
Lori
Andy
3, 2013-02-28 28, 2013I was wondering if there isa way of putting custom stamps on multiple copies of PDF.
I need to put a stamp and flatten about 100 pdf copies and this happens frequently.
I know pdf doesn’t offer some macro function to combine stamp and flatten in a click of a mouse so I was wondering about this.
Thanks!
Lee Loewer
8, 2013-01-16 16, 2013Hi Lon,
Great Tutorial! I’ve viewed so many tutorials on creating Adobe Acrobat Dynamic Stamps and was wondering if I would find one that actually works for Acrobat X. Yours does. Thanks for sharing.
Hi Lee,
You can also find an updated version of this tutorial here:
http://acrobatusers.com/tutorials/creating-a-custom-dynamic-stamp-infographic
Thanks,
Lori
Jan
9, 2013-01-12 12, 2013I have recently upgraded to ver. 9 and am having a problem with a customized stamp and inserted text. In ver 8 i was able to add text w/o having to add a text BOX. I added a text FIELD and was able to set the properties for it. Here is what the stamp looks like
INSTR.: _____________
CREF: _______________
COURSE: _____________
Hi Jan,
Unfortunately you cannot have interactive elements in a custom stamp after it has been placed on the PDF. You can however, try some of the options mentioned in Thom’s tutorial here:
http://acrobatusers.com/tutorials/dynamic_stamp_secrets
Thanks,
Lori
Mary
10, 2013-01-07 07, 2013I receive PDF invoices. I tried to create a stamp with Entered by, my name, date and time. I can create the stamp but the date and time does not change to the current date & time. How can a create a custom dynamic stamp to use over again & again with the correct date & time? My custom stamp is not under my user name; I don’t have application data so I save it to the ENU folder.
Traci Lopez
9, 2012-12-20 20, 2012I was wondering if there is a way to make the existing dynamic stamps smaller, so that they are sized to fit when we are using them.
If this isn’t possible, will I be able to create a dynamic stamp myself that is sized the way it needs to be?
Hi Traci,
You can resize the stamp image prior to using them. You could either edit them in a tool like Photoshop or Illustrator or Crop the page in Acrobat.
Thanks,
Lori
Daniel Hodge
3, 2012-12-05 05, 2012I just have Acrobat 9 Standard. If someone else here has Professional and creates the stamp for me, would I be able to use it in my version? Thanks.
Hi Daniel,
Actually Acrobat 9 Standard does contain the form editing tools, so you should be able to create your own custom dynamic stamp. But to answer yoru question, yes you could use stamps created from others as well.
Thanks,
Lori
Mathew
12, 2012-06-25 25, 2012Actually what I want to do is link to an external file using a custom built stamp, is this possible?
Hi Mathew - unfortunately this is not possible especially with the current security model in place for Acrobat.
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