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Free Plugin by Canyon Webworks v4.1.2

PDF Ink Lite

Watermark and password protect PDFs with WooCommerce, EDD, and Download Monitor. No Ghostscript required, PHP 8+ compatible. Since 2014 (FKA WaterWoo)

PDF Ink Lite

The facts

Rating
4.6★ from 51
Active installs
2k+
Price
Free
Last updated
22 Aug 2026
Added
Oct 2014
Requires WP
7.0
Tested up to
WP 7.1
Requires PHP
7.4
Downloads
91,998

Our analysis

AI-assisted

PDF Ink Lite is a WordPress plugin that adds watermarks and password protection to PDFs downloaded from WooCommerce, Easy Digital Downloads, and Download Monitor. It allows you to customize watermarks with customer-specific data, such as names and emails, and offers various font options for personalisation.

The plugin is designed for users who need to secure their PDF downloads and provide a level of customisation in the watermarking process. It is suitable for e-commerce sites that require additional security for downloadable products.

Best for: E-commerce sites that sell downloadable products and require PDF security.

What it does well

  • Adds watermarks to PDFs with customer-specific data
  • Customizable font face, color, size, and placement
  • Includes password protection and anti-copy/anti-print features
  • Supports various PDF sizes and page orientations
  • No need for additional libraries from the host

Where it falls short

  • Limited to basic features compared to the paid version
  • Does not specify compatibility with all PDF versions

Verdict

PDF Ink Lite provides essential watermarking and protection features for PDFs, making it a practical choice for users needing basic security for their downloads.

From the developer

Canyon Webworks's own description of PDF Ink Lite, lightly tidied.

PDF Ink Lite adds watermarks and password protection to every PDF your customers download from WooCommerce, Easy Digital Downloads, and Download Monitor. Watermarks can include customer-specific data like names, emails, and date, and are customizable with font face, font color, font size, vertical placement, and text.

PDF Ink Lite is the only free watermarker for WordPress which includes necessary libraries (so you don’t have to ask your host to load them), and watermarks newer versions of PDFs (not just older versions).

Features:

  • Choice of font face, color, size and placement (a horizontal line of text, centered anywhere on the page)
  • Included font types cover most languages, and the plugin is internationalized
  • Dynamic customer data inputs (customer first name, last name, email, order paid date, and phone) to customize PDFs on-the-fly
  • Add a password to your PDF, and/or anti-copy, anti-print protections
  • Watermark only designated PDF downloads (as specified by you), or all PDF downloads from your site
  • Watermark is applied to all pages of the PDF (upgrade to choose pages)
  • Accommodates different page/paper sizes, and PDFs with various page sizes (letter, A4, legal, etc)
  • Secure & encapsulated: PDF Ink hooks into e-commerce download link clicks and checks for PDFs and maybe marks them – that’s it!

For better PDF coverage and many more options, check out PDF Ink, the full version of PDF Ink Lite.

Upgraded (paid) version features:

PDF Ink is priced below competitor plugins that offer maybe half the function. Why? Because we want you to succeed! 🥰

Read the full description on the official page →

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