If you are traveling to Slovak Republic with Canadian passport in most cases you do not need to obtain entry visa to Slovak Republic at the consulate beforehand. The period of stay though may be limited by the laws of Slovak Republic. You may check what is the allowed period of stay at the Slovak Republic consulate in Canada. All other applicants should check information on Slovak Republic visa requirements, procedure, application forms, fees and processing timings may be found here: https://slovak-republic.visacenter.ca/.