Scripts
Wikimedia Commons upload page: near Categories input - set previous clickable categoriesJS-Useful to see previous categories that you used
Wikimedia Commons: files page: add categories near every file nameJS-In your list of uploaded files you will see clickable categories
moneymuseum.by: PDP: add button to copy a title without spacesJS-This is bad to have spaces in file names
moneymuseum.by: show links to uploaded files in Wikimedia CommonsJS-Useful to see - what was already uploaded to https://commons.wikimedia.org
Wikimedia Commons category page: highlight my files (of the current user)JS-Useful to see what files are uploaded by you
YandexMail: faster link opening - without intermediate Yandex pageJS-It may be less secure - because maybe Yandex use such mechanism to block bad pages. Or better for your privacy - because maybe Yandex use that middle page to get stats.