I prefer to use the autotype function of password managers (Ctrl-V on Keepass[0], and rofi-pass[1] for pass(1)); there are other issues with them though (such as "modern" login pages [2])

[0] https://keepass.info/help/base/autotype.html

[1] https://github.com/carnager/rofi-pass

[2] http://bradfrost.com/blog/post/dont-get-clever-with-login-fo...