I can recommend ChromicPDF from html → pdf GitHub - bitcrowd/chromic_pdf: Convenient HTML to PDF/A rendering library for Elixir based on Chrome & Ghostscript

Haven’t used it myself but had it on my list to check it out sometime https://gotenberg.dev/

Sometime ago at my company, we were also using wkhtmltopdf. We didn’t like that it was run on the same machine as our Elixir app. We also faced some challenges with PDF styling.

At first, we switched to client side rendering of PDF. At that period of time, we used: html2pdf.js | Client-side HTML-to-PDF rendering using pure JS. This also resulted with some issues, as sometimes, depending on the customer browser, PDF differed depending on used browser.

In the end, our go-to solution was an external solution: https://pdfmonkey.io/. I’m not in any way associated with them, just really liking their support, when we were starting a co-operation with them. The pricing is pretty decent, if you don’t generate thousands of PDF.

We’re using PDF Monkey together with: https://pagedjs.org/, which allowed us to use some features, like Table of Content, headers, footers, etc.