Here you will find a selection of excellent tools that can help you work with PrintCSS.
The PrintCSS Auto Prefixer library parses CSS and adds vendor prefixes to CSS rules. This allows writing Print CSS faster without minding the PDF renderers.
The PrintCSS Renderer library offers an API that allows to configure different PDF renderers in a uniform way. This allows switching easier between different PDF renderers.
A lot of people are doing awesome things with PrintCSS and some of them build useful tools to help all of us. Here are some of them.
(PrintCSS: the silent revolution in publishing.) An article about PrintCSS with all its advantages and disadvantages in German.
www.siegertypen-design.de/blog/printcss-publishing-revolution.html
(PrintCSS — Introduction and reference) A comprehensive work on PrintCSS, published by pagina GmbH and in German. ISBN 978-3-938529-20-1
(Web technology suddenly makes print: How print CSS can change the industry) A short article about PrintCSS and its potential.
www.publishing.blog/webtechnologie-macht-ploetzlich-print-wie-print-css-die-branche-veraendern-kann
A PrintCSS playground that allows to write HTML, CSS and JS right in the browser. Best: You can test the output trough different PDF renderers.
A very comprehensive tutorial to learn PrintCSS. Individual functions are listed as in a compendium and covered in individual lessons. Processing by PDF renderer is compared.
A PrintCSS Discord server on which many people exchange information on PrintCSS topics. Renderer developers are also represented there and provide insights into updates and first aid. An important channel to stay on the ball.