The deal is simple: you upload pdfs, you arrange the pdfs, and you merge the pdf in the browser.
Your files never leaves your computer, and nobody gets to see them in the process.
We wanted a simple tool that does simple talks, the right way.
Tasks like concatenating some pdfs can be done single-handedly by your browser (and, btw, litteraly any programming langage in less than 10 lines). So why bother with a comlicated ballet of lambda functions, bucket storages and others load balancers, where you can get the same result, faster and without compromising user informations with a simplistic static webpage?