STEP 1
Run PDF Super Toolkit, click on Add Watermark.
STEP 2
Click on Browse button at the top of the window to choose PDF file from your machine.
STEP 3
It gives 2 options to add text watermark or add image watermark, it gives 2 options to add watermark to all pages or add watermark to page ranges, so use according to need.
STEP 4
Click on Browse button at the bottom of the window to select destination path to save output PDF file.
STEP 5
Click on Process button to add watermark and save to output PDF file. A message Successfully add watermark will be displayed after processing, press Yes to open the output PDF file with system default PDF viewer.