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- My name is Jarek T. and I am an admin on Wikimedia Commons and have been active there since 2007. I mostly do
- Template maintenance: I created or significantly contributed to all templates in c:Commons:Infobox templates. Created current versions of Creator and Institution templates and namespaces.
- Rewriting templates in Lua: I rewrote many high-use templates in Lua including c:template:ISOdate, c:template:Date, c:template:Other date, c:template:Authority control, c:template:City, c:template:Location, etc.
- Moving metadata from Commons to Wikidata. In April 2016, Commons got arbitrary access to Wikidata, so now our templates can access Wikidata properties. Wikidata is much better place for storing matadata related to people, places or significant objects, so we are in process of reconciling and moving some of it from Commons to Wikidata. I moved much of Authority control identifiers and working on other data.
- Ensure all files on Commons have licenses. I use my OTRS and admin rights to investigate cases where images lost license templates and work with new users who uploaded images without licenses.
- Bot runs with my User:JarektBot, doing over 3.4M edits since 2008
- Upload GLAM images with User:JarektUploadBot
- Adding Template:Authority control to 60k pages on Polish and Italian Wikipedias each
- File metadata cleanup drive
- Take and upload my own photographs, see Category:Photographs by Jarek Tuszynski