Smallpdf is a polished cloud desk with a generous brand and a paid Pro tier. It is good software. It is also a server.
PakPDFConverter is a local desk: 27 PDF tools and 15 image tools, Urdu+English chrome, no Pro unlock. Ads are display-only so the process button is never behind a paywall.
Choose Smallpdf when your company already bought seats. Choose this kit when the file should not take a round trip — or when you simply do not want another account.