Custom Fonts with SetaSign-Stamper March 21, 2020 Updated: June 17, 2025 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 […] Read more » SetaPDF-Stamper
Brazil Shops can add CPF to a PDF October 6, 2018 Updated: June 17, 2025 Here is an example of adding new magic tags to PDF Ink for on-the-fly and totally-customized watermarks. A Brazilian customer using WooCommerce requested a magic tag to display the Cadastro de Pessoas Físicas (CPF) on PDFs. CPF is a taxpayer identification number all citizens of Brazil must use to shop online within Brasil. In order to collect CPF data from customers, our customer uses the Woocommerce Extra Checkout Fields for Brazil plugin.* We wrote the following code to programmatically create the magic tag [BILLING_CPF]. This magic tag will import any customer’s CPF number into their personalized PDF during stamping (when the customer clicks download). The “WooCommerce Extra Checkout” plugin mentioned […] Read more » Magic Tags Snippets
TCPDF Performance Tuning April 26, 2016 Updated: July 6, 2025 Make sure to test your watermarking thoroughly before going live! TCPDF is a third-party library which does its best to parse/understand and re-write your PDF with your desired changes (watermarks/encryption/etc), but it cannot possibly work on all PDFs and on all servers 100% of the time. Stay realistic, think carefully through the process, plan, and do your testing. PHP Version You should be running at least PHP version 7.2 for the plugin to work, but higher that for it to work WELL. WordPress recommends you run PHP version 7.4 or higher, but even that is old PHP! PDF Ink is PHP version 8.4+ compatible, so don’t hesitate to upgrade PHP […] Read more »
