Thanks! Where to find some "Cross-wiki upload"? Please provide a link where to see the problem and please see https://www.mediawiki.org/wiki/How_to_report_a_bug - thanks! :)

@Honischboy: No reply, so I found https://commons.wikimedia.org/wiki/Commons:Cross-wiki_media_upload_tool which links to https://www.mediawiki.org/wiki/Upload_dialog which implies this is part of MediaWiki Core. Hence adding the MediaWiki-Uploading project tag so someone could find this task in theory.

I rewrote the task description to show the issue clearly and to include the suggestion from the task that has been merged

1. People on discussion pages have a contant need to upload screenshots and other stuff related to article editing. Meanwhile, screenshots and screencasts of software bugs is a common case for tech forums.
2. For some reason, I considered such uses of Commons discouraged and used imgur.com for that purpose, which is clearly suboptimal.
3. I discussed this on the Wikimedia Community Discord. People were as confused as I was;
   • some folks even use Phab for such purposes;
   • one person shared that they refrain from discussing technical stuff on wikis as opposed to Discord because there is no streamlined process for uploading images there.
4. A consensus crystallized that, at the end of the day, there is nothing inherently bad in uploading stuff for talk pages to Commons. Commons has no clear policy on that.
5. The upload dialog discussed here seems to be a good mechanism for managing talk page uploads, already implemented in DiscussionTools and Conveneint Discussions. It just needs a little tweaking.
6. If we nevertheless believe that Wikimedia Commons is a bad place for uploading stuff for talk pages, then let's create a Toolforge tool for that with some open source library to manage uploads, an API, CORS policy, copyright policy, and so on.
7. The fact that in 2024 there is no 1) general idea among Wikimedians of where to upload stuff we discuss, 2) supporting tech for this purpose – is ridiculous, and we need to do something about it.

Just so you know, I've tweaked the upload dialog, based on @Nardog's prototype, for the needs of Convenient-Discussions, adding the ability to choose a preset for screenshots that autofills the description, source, license, and author fields. It still doesn't have a choice of licenses, but makes them available to be typed in manually.

If anybody wants to reuse or further tweak this dialog, you can rip it out of Convenient Discussions together with the imports if you need them. If something stands in your way, text me.

Note that there was a A/B test conducted in 2015 which showed a slight improvement in the quality of uploads if the restrictions were explained in more detail and/or the user was required to take some actions. Nevertheless, the conclusion was

The tested interface options weren't very successful in improving the quality of uploads, by new users or otherwise. The upload dialog was reverted to using option 1 for now.

That conclusion seems questionable to me given that the numbers do show an improvement, even though it's within 10%. Still, a lot of effort of users fighting copyright violations would be saved.

And FYI there is an ongoing discussion on Commons on deactivating cross-wiki uploads for new users.