Do you have any plans to open source this? I love the function and have always wished something like this exists. I have my own dumb opinions on resumes like format and multiple pages, so I'd like to be able to tweak the design a bit.
No plans to open source it. If you want to make a PDF in the browser, look at using html2canvas to generate canvas from html, and passing that canvas to jspdf to make a PDF. I generate the canvas manually because html2canvas has some issues, but for most uses it works well.