So here's the stuff, the graphs are mostly the same as T120867#1870223 and T120867#1876785 a while ago – with a few differences:

• Fewer tools are identified, because most just had really small number of uploads and it just makes the chart too busy
• First-time uploaders are more correctly identified (deleted uploads a long time ago count and non-upload contributions don't anymore; shouldn't be a big change)
• Only deletions within a month of uploading are considered to make an image "bad"; if an image was deleted more than a month after uploading, it's still "good". I think this allows us to more sanely compare the quality of recent and older uploads; obviously, older uploads have a bigger chance of being deleted, because there was more time to scrutinize them, and that skewed the results a bit. So, to repeat, "bad" is not an absolute number of how many of the uploads were deleted, but the ratios between different upload types and different dates are more comparable.

My queries are for the period of 2016-07-01 to 2016-08-20 (a month ago). This is to not show recently uploaded files which have not been triaged yet. (And conveniently it avoids the WLM contest, which results in new users uploading two times more files than normal and messing up my stats.)

The big anti-copyvio filters were enabled:

• Filter 153 on 21 June 2016 (patch which made filtering possible only went live on 13 July 2016 https://gerrit.wikimedia.org/r/#/c/295254/)
  • Big change on 4 August
• Filter 154 on 15 July 2016, only small changes later
• Filter 156 on 8 August 2016, only small changes later

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And now here's the stuff for real:

From bottom to top: cross-wiki uploads, UploadWizard, GWToolset, VicuñaUploader, Magnus' tools (mostly Flickr2Commons), Android and iOS apps, and everything else (including Special:Upload).

All uploads, by all users

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This one is really rather uninteresting. I'm mostly including it to show the relative magnitude of cross-wiki uploads, UploadWizard uploads and everything else. But you can see the number of cross-wiki uploads (teal and orange slivers at the bottom) decrease. UploadWizard uploads look unaffected, and other uploading tools already have huge variances (presumably people mostly use them for big batch uploads).

First-time uploads

This only includes files which were the very first file uploaded by a given user. Note the different scale from the previous chart.

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So yes, number of cross-wiki uploads decreases noticeably, and their quality also noticeably increases. It doesn't seem to line up very well with the dates that the filters changed though? Probably just random noise.

Uploads by UploadWizard and other tools don't seem to be affected.

Once again I'd like to note that the quality of the upload is mostly independent of the tool which was used to upload it. New users just upload copyvios, no matter how many steps they have to click through and how many big red warnings they are shown.

Cross-wiki upload counts

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Just in case previous charts did not convince you, here's a simple query to just count the number of cross-wiki uploads. It has decreased a lot. (This one goes up to today.)