This, is gorgeous! I absolutely hate the PDF ecosystem, and how painful it is to get a reasonably simple tool to just do basic edits to files (adding/removing pages, combining multiple PDFs etc). I particularly hate how hard it is to find good swiss army knives for it, and how you always land on sketchy websites to do simple things to a file.

This looks dead simple to use! LOVE IT.

The one feature request I have is for adjusting margins (adding/removing fixed amount of space from every page, optionally adding/removing different amounts from odd numbered pages). Target audience: People who want to read PDFs on small ebook readers.