WordPress PDF Stamper Plugin

WordPress PDF Stamper watermarks every PDF download from your site with the details of the person who downloaded it, so a copy that turns up on a file-sharing site leads straight back to the account it came from. Built for WordPress Download Manager, it applies a text or image stamp to each PDF at the moment it is downloaded and can lock the file with 256-bit AES encryption. Your original file on the server is never changed.

Selling eBooks, reports, or course material? Pair it with the Premium Package add-on to stamp each copy with the customer's name, email address, and order ID.

Key Features

• Personalised text watermarks — build the stamp from tags such as {fullname}, {email}, {order_id}, {download_date}, and {sitename}, plus any package template tag
• Image watermarks — stamp your logo or a "Confidential" mark from the media library, with adjustable height and transparency
• PDF encryption — secure downloads with 256-bit AES encryption, an open password, and an owner password, or leave a password blank to use the customer's order ID
• Print, copy & edit restrictions — decide whether readers can print the document, modify it, copy text and graphics, or add annotations
• Choose the pages — stamp all pages, the first or last page, odd or even pages, or every page except the first
• Precise placement — nine anchor positions, pixel offsets, and 0–360° rotation for diagonal watermarks
• Full text styling — 14 bundled fonts plus size, colour, character spacing, line height, alignment, underline, border, background colour, and text stroke
• Per-package control — stamp every PDF by default, then set individual packages to always stamp or never stamp
• Original files stay untouched — the watermark is added on the fly as each PDF is downloaded
• Developer friendly — register your own watermark tags with the wpdm_pdf_stamper_tags filter

Tutorial

How to Use

1. Download the plugin from the premium download area, then install and activate it like any other WordPress plugin
2. Go to Downloads → Settings → PDF Stamper
3. Choose a text or image watermark. For text, enter your stamp, for example Licensed to {fullname} ({email}){br}Downloaded on {download_date}
4. Pick the pages, font, colours, position, and transparency, then save the settings
5. To encrypt a package's PDFs or turn stamping off for it, edit the package and open its PDF Stamper tab

PDF Stamper works on PDF files stored on your own server when they are downloaded individually. See the PDF Stamper documentation for every setting and template tag.