Not coded by me, I paid someone 4 years ago to do this. I decided two years ago to share this on Github (https://github.com/JoGaTo/nyaa.si-batch-uploader).
This is an offline/desktop version of uploading torrents to nyaa.si. It's also the ONLY program to mass upload a hundred torrents at a time, and comes with everything you see below:
A few things
If batch uploading, whatever you put for category, description, and info will be the same to EVERY torrent.
Unclicking the 'Upload to Sukebei' box will allow you to upload to the normal version of the site.
Errors or Problems
As much as I prefer to answer your questions to the best of my ability here (cuz, like I said, I ain't the one that coded this and the guy who did I haven't contacted him 4 years since) I would prefer to comment in Github.
This is ONE error that I discovered yesterday that apparently has been going on since late 2021 (before that the software was working fine for four years), and it was every time I tried to upload a torrent, this pops up `request to https://nyaa.si/api/upload failed, reason: certificate has expired` I don't know if it's the fault of the website or the actual software.