December 3rd, 2025
When you pair SetaPDF‑Stamper with PDF Ink, a whole new world of “smart PDFs” opens up. Imagine every external link inside a downloadable PDF guide instantly morphing into a personalized gateway—complete with affiliate codes, UTM tags, or a secret user token—without ever touching the original source file. With just a few lines of PHP, you can walk the document’s page tree, sniff out each PDF UriAction, and splice a custom query string onto the URL. We'll show you how.
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September 20th, 2025
PDF metadata can signal a request not to scrape content, primarily via the W3C's TDMRep protocol. This functions as a polite request or social contract that compliant AI bots might respect. Malicious or non-compliant scrapers will simply ignore the metadata. To truly block access, technical measures are necessary. Read about using PDF Ink to implement both the "polite request" and technical measures -- and keep AI out of your content!
May 14th, 2025
Almost all PDF watermarking plugins for WordPress lose fidelity when it comes to forms, layers, and table of contents (TOC). This means you can gain a PDF password and stamping, but lose original PDF functionality. Using PDF Ink and SetaPDF-Stamper together is the solution to this problem.
May 5th, 2025
Sometimes we’ll handle a deluge of files for a single project—contracts, spreadsheets, presentations, licenses, and source data—all floating around in different emails, shared drives, or chat threads. What if all of that could live in one self-contained PDF “package?” This isn’t just a hypothetical. File stream embedding, an advanced PDF feature, allows businesses to create intelligent, all-in-one digital containers. This approach streamlines workflows, enhances branding and brand loyalty, enhances compliance, and ensures data integrity. PDF Ink and SetaPDF-Stamper can be used in PHP-based web applications to add embedded streams conditionally and dynamically, making these tasks magical and almost… fun. Each PDF download can be customized programmatically for the file, purpose, and/or end user — without […]
January 23rd, 2025
Look ma! No WordPress required! In the documentation for PDF Ink, it is explained how to write a simple script to fire up the PDF Ink PHP library and stamp a PDF file. The library is written in such a way that it can be used without WordPress, and any one of six different PDF-manipulation library sets can be used. This is helpful when one set doesn’t work with a specific PDF, but another set might. As always, when PDF Ink fails for any specific PDF, the solution is to either attempt to repair the PDF — or upgrade to a better library, like SetaPDF-Stamper. The example in the documentation is for TCPDF/FPDF, so here […]
October 27th, 2023
When choosing between WooCommerce PDF Watermark and PDF Ink for watermarking and passwording PDFs, both plugins offer essential features but differ significantly. PDF Ink provides greater flexibility with customizable watermarks, allowing HTML tags, custom fonts, and multiple watermark locations. It supports advanced encryption options like AES and offers robust file management, including recycling previously watermarked PDFs. In contrast, WooCommerce PDF Watermark has limitations, such as fewer customization options and higher pricing. Read the full comparison!
December 10th, 2020
At the moment there are quite a few softwares (mostly paid) that allow you to manipulate PDF files as they are sold online. Some even allow you to add identifying customer data to the PDF in order to copyright, encrypt and password intellectual property. Currently the WordPress plugin scene includes three main routes for PDF manipulation. Risking simplifying things to a degree and possibly excluding outliers on the market, most products for WordPress will use these library set #4: Watermarkers using FPDI/FPDF (Option 4) include WooCommerce PDF Watermark from WooCommerce, the Ignite WooCommerce PDF Watermark Stamper, and Tips & Tricks’ WP PDF Stamper. Basically, all the competition uses the same library set. Some competitors have […]
March 21st, 2020
The SetaPDF Core library allows quite a bit of font customization to be done. Check out the official documentation on SetaPDF and fonts & encoding. For the meantime, a quick tutorial on how to get other fonts beyond the five packaged with the plugin (Times, Courier, Helvetica, Symbol & Zapf Dingbats). There are two methods: settings panel and programmatic. 1. Adding Fonts Via The Settings Panel Under the font selection in PDF Ink settings, you will see a link to add a custom font. Click it! This will take you to a font uploader screen. There is also a link called “Add Fonts” in the main WordPress sidebar menu. Upload your TTF file. Most TTFs […]