"Delete after an hour" is not the same as "never received"
Many converters market themselves as privacy-conscious by promising to delete uploaded files after a set retention window. That's still a data flow: your file traveled to their server, sat there for some period, and was processed by infrastructure you don't control before deletion — deletion policies are also just promises, not verifiable guarantees.
PrivaPDF's model is structurally different: the file is never uploaded in the first place, which you can verify yourself in DevTools' Network tab. There's nothing to delete because nothing was ever received.