In practice

Three habits are enough

None of them is complicated, but together they prevent doing the same work twice in one day.

Download immediately

The simplest rule: do not leave the page before the file reaches your device. Putting it off is the cause of most disappearances.

One file at a time

Converting five files and downloading them together at the end of the day runs into the window. Finish each before starting the next.

Know which tool you are using

Merging, splitting, numbering and signing produce nothing on a server, so no window applies. Know which one is in front of you before worrying.