Merge PDFs in the browser with JavaScript (no uploads, no server)

In this post I'll show how to merge PDF files entirely in the browser using PDF.js and pdf-lib — no server, no file upload, no backend. Everything runs on the user's machine, which is great for privacy and for keeping hosting costs at zero (it's just a static site). Why process PDFs on the client? Most "free" PDF websites quietly upload your... Weiterlesen