If you open/load the .torrent file in qBittorrent (or any client, for that matter), and set the save path to the directory containing the file you already downloaded, then qBittorrent will see that a file of the same name exists and that all pieces of the file have already been downloaded. It will then proceed to seed the file.
However, whether to seed or not, or how much to seed, depends on the availability of downloaders and the choice of the peer at the seeding end.  Share ratio A user's share ratio for any individual torrent is a number determined by dividing the amount of data that user has uploaded by the amount of data they have downloaded. If you see that you are the last “seed”, and there are only “peers” left, then you should keep in mind that if you stop seeding, you will very likely kill that torrent. In that case, it would be very nice from you to wait until at least one of the “peers” finishes the download and becomes a “seed” . Simply find a torrent you wish to download anonymously via a third party, Copy the .torrent or magnet address URL (right click the download execute button not the website url) then Paste on TorrentSafe URL box and click "Download Now". To view your in-progress and completed downloads, click the "My Downloads" at the top. Thanks for the A2A. What are torrents? Torrents are a way to distribute files. But what are seeds and peers? To understand all this, first let's take a look at a simpler method of sharing files - HTTP.
Seed your torrents with a free seedbox without using your
How to Bring Dead Torrents Back to Life * TorrentFreak Oct 23, 2008
Make uTorrent Automatically Stop Seeding When Complete
The Pirate Bay – Best All in One. Termed as the “King of Torrents” the Pirate Bay is one of the best … How to seed downloaded files from torrent (fast!) - YouTube Dec 03, 2018 Seed your torrents with a free seedbox without using your Jul 18, 2013 Seedr Help Center