How to add watermark to pdf files online? 2 free online tools

Many people add watermark to their pdf documents  to protect them from unauthorized use.It's like adding copyright to own property.If you want to add watermark to one or two pdf files ,instead of downloading freewares or softwares,you can try free services available on internet.Here's the list of best free online watermarking tools


This is a online pdf converter service which you can also use to watermark and password protect pdf files.First you select a portable document file,then select among various watermarking options including:
Author name,email address,security information,watermarking settings,optional conversation  settings.Click submit button and check your mail for watermarked pdf file.File size shouldn't exceed 25 MB.

1.Pdfonlie Online watermarking tool

First you select pdf file that you want to watermark.Specify watermarking options then click "Add Watermark" button.You can  add watermarks to 20 Portable Document Files per day.Pdf file should be less than 10 MB.

2.k2pdf online watermarking tool