Can I change the language in which I use Wikipedia?
Click.to uses the current language preset in this case – your installation language. If you wish to use other languages, you can very easily integrate a different language Wikipedia, by selecting the “Add Action”. To do this you just have to go a different edition of Wikipedia, run a query and copy the link of the search result. In click.to menu there is the option “Add New Action”. It opens a small window with the link, if you have recovered your search word, just replace it with “[URL text]” and click Add. From now on you have another icon in your menu and click.to can also look for words in other languages in Wikipedia.
Can I also search words from PDF to Wikipedia?
Everywhere, where you can highlight text, the command Ctrl+C (for Mac-User: ⌘+C) or right click works and that means click.to works there as well. In many PDFs there are now tools that make it possible to select text. Simply mark and copy the text with click.to to Wikipedia.