WP PDF Stamper

WordPress plugin to stamp and securely sell your PDF files

Minimum Requirements for the WP PDF Stamper Plugin

The WP PDF Stamper plugin requires the following installed on your server

  • Recent Version of WordPress (Version 6.0 or higher)
  • Recent Version of PHP (Preferably PHP 7 or higher)
  • CURL Library (this should be installed by default on most servers)

Requirement for the PDF File to be Stamped

  1. The PDF creator you use must produce a valid PDF file according to the specifications specified by Adobe. (PDF files created by any adobe product, open office, PDF995 etc. are good examples)
  2. The PDF stamper makes it to where you cannot modify the stamped copy of the PDF file (this is for extra security). Any option in the original PDF file that allows the user to modify the file, will not be available in the stamped copy of the PDF file.
  3. The PDF stamper needs the PDF file to be hosted on the same site/domain where the PDF stamper plugin is installed. You can’t host the PDF file to be stamped on another server (example: Amazon S3).

Stamping a Large PDF File

PDF stamper plugin imposes no limit on the PDF file size. You can stamp large PDF files as long as your server can handle it (we have customers who are using this plugin to stamp large PDF files). However, some common knowledge needs to be applied here. For example, if you have a cheap shared hosting account with limited resources but you are trying to stamp a very large file then chances are that your server won’t be able to handle the request and the stamping will fail.

Why Stamp Your PDF eBook?

There are many reasons to stamp your PDF eBooks, but the main one would be to protect your eBook from being shared. The WP PDF Stamper is a unique product. It allows you to dynamically stamp a PDF file with the customer’s details (e.g name, email, address etc.) in the footer. The PDF Stamper can be integrated with a 3rd party payment system or shopping cart (e.g WP eStore). The shopping cart will automatically provide the verified personal information of the customer from the payment gateway to the PDF Stamper which will be used for stamping the footer. This way the true personal details of the customer will be stamped on the PDF eBook as opposed to some fake details.

It is a proven fact that PDF eBooks stamped with personal information such as name, address, email address, phone number are less likely to be uploaded to file sharing sites. Would you upload a file that has your personal information to a file sharing site? Probably not!

Stamping a PDF file also allows you to track down the source of the shared file. If you come accross a shared file then you will be able to track down the person who shared it as the contact information of the original buyer will be stamped in the file.

Here is a quick list of some reasons why you may want to stamp your PDF eBook:

  • Security
  • Personalization
  • Track the source of shared files
  • Branding

It all comes down to protecting your assets. Your eBook is your hard work and invested time, which you do not want to go to waste because some people decided to share your eBook on a file sharing site. When you do not protect your asset it’s a lot like leaving your back door unlocked when you go on vacation, anyone can come in and steal your property.