Ever wanted to edit the trackers in a torrent, share the modified torrent without breaking compatibility with the unmodified torrent? Maybe the torrent is using a dead or dying tracker. Maybe you just want to add more backup trackers to a torrent with only one tracker. You’ll be glad to know that you can do just that.
Editing the trackers in a torrent file does not change the info hash of the torrent. Trackers rely on this info hash to figure out when users are requesting files from the same torrent. If the info hash changes, then trackers and clients will treat the torrent as different from the unmodified torrent, and the tracker will no longer share the seeds and peers using the unmodified torrent, even if the files being shared are identical.
The easiest way I’ve found to edit a torrent file is actually a slick online tool, Torrent Editor. It is, of course, labeled “beta” as all web applications nowadays are (when did the meaning of “beta” change from incomplete, unpolished, buggy, to hot and cool?), but I haven’t encountered any bugs. You simply upload the torrent you want to edit, add/remove the trackers using the online forms, then save and download the modified torrent. It’s all quite self-explanatory.
Note: I originally began researching convenient ways of editing torrents to see if I could edit the “private” aka “DHT” flag of torrents to convert torrents uploaded on private trackers into public ones. It turns out I cannot. 
Changing the private flag changes the info hash.
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Thank you for the tip! I want to do exactly that.. But I find that if you have a torrent with non-En/Ascii characters within, the torrent editor also needs to support foreign/multibyte/unicode chars, else the info hash it produces is different, even without making any edits!
npcomplete: Thanks for the comment. Unfortunately Torrent Editor’s bug report page is incomplete.
http://www.torrenteditor.com/bug.php
doesnt work this site http://www.torrenteditor.com/
who have torrent editor under win xp?
http://www.torrenteditor.com/ is back up.
To all wondering. This works like a charm! Thanks so much for creating!
i’m trying to remove moviex trackers from a torrent because they will seed from me but not let me leech (standard moviex treatment), and this site is not removing all of the moviex trackers. beta, indeed.