How to Add a Watermark to PDF Files

If you have a business, you really want to add a watermark to your PDF files to avoid stealing. The worst part would be to add a watermark to thousands of PDF files. The good news is that you can actually automate the process using PDF.co Web API and Zapier.

Here’s a step-by-step guide. We will use this sample PDF invoice for this tutorial and add a watermark to it.

Create a Zap

Select a Trigger App

Select a Trigger Event

Setup Trigger

Test Trigger

Select an Action App

Select an Action Event

Setup Action

Test Action

Result

Step 1: Create a Zap

On your Zapier dashboard, click Create Zap

Step 2: Select a Trigger App

For this tutorial, we will use Google Drive as our Trigger App

Note

You may use different cloud storage of your choice.

Step 3: Select a Trigger Event

For the Trigger Event, select New File in Folder. This will trigger the Zap every time there’s a new file in the selected folder

Step 4: Setup Trigger

Select the Drive and Folder that you’re going to use

Step 5: Test Trigger

Step 6: Select an Action App

Search and select PDF.co as the Action App

Step 7: Select an Action Event

Select PDF Filler as the Action Event. This will be the API that we will use to insert a watermark to your PDF.

Step 8: Setup Action

For the Source PDF, insert the link where your PDF is located
For the Images, insert the X and Y coordinates, the page where you want to insert the watermark/logo, the link to your watermark/logo, and the width and height of the watermark. You can find the coordinates of your PDF with our PDF Edit Add Helper.